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3Com 510 Universal Remote User Manual

1. Nonrelly this network would soon encounter serious y problems resulting from a loop around which frames could endlessly travel if precautions aren t taken by the bridges Over ISDN links a proprietary form of loop control is implemented On WAN leased line links the Spanning Tree Protocol STP prevents data loops Bridge AE On startup the bridges send out frames to enquire if there are other bridges on the network By exchanging information the bridges block ports that cause the loops and ensure that there is only ever one active path through the network If one of the links or bridges fail the other bridges detect this and reconfigure their ports so that there is once again an active data path through the network Figure A 2 Multiple Remote Bridges Network Topology If your network topology is star shaped a combination of ISDN and bridging is usually the most efficient and successful option Routing is a better solution if your network topology is a complex mix of both leased line and ISDN circuits running at 64 Kbps to 2 Mbps Broadcast Storms Bridges are programmed to automatically forward data packets by default while routers filter data packets by default These attributes have an impact o
2. for speeds up to 19 2 Kops configurations downloadable from network m 35 V 36 for speeds up to 2 048 Mbps attached terminal or PC SNMP MIBII support with private extensions for ISDN Connector Interface management of unique features Provides a twin interface to a 2B D basic rate ISDN service via an RJ 45 connector socket B2 TECHNICAL INFORMATION Bridge Characteristics m 802 3 MAC layer bridge m 802 1D spanning tree algorithm m Support for bridge triangulation and link load sharing Performance m LAN filtering rate 10000 frames per second m LAN forwarding rate 4000 frames per second ISDN and WAN forwarding rates are dependent on the link speed Approvals This product ostensibly complies with the electro magnetic compatibility EMC requirements of EN 55022 dass A and EN 50082 susceptibility However to fully comply with Class B of EN55022 the following prerequisites should be observed The WAN port must be attached to a screened digital cable The ISDN cable must be used in conjunction with a three tum ferrite The product caries the CE certification mark to indicate conformance with the following BU directives LVD Low Voltage Directive Safety 73 23 EEC EMC Hectro Magnetic Compatibility Directive 89 336 EEC TTE Telecommunication Terminal Equipment Directive 91 263 EEC The product conforms to I CTR3 based on NET3 ISDN interface FCC Requirement This product has been v
3. provide more security on a busy network and filter unwanted data transmissions more effectively If your network consists of only one or two links between different sites and your network is not heavily loaded in most circumstances you can configure your OfficeConnect Remote units as bridges If your network structure is complicated and consists of a mixture of leased line and ISDN links or if it uses several different protocols you may obtain better performance from the OfficeConnect Remote units if you configure them as routers If you are connecting to a routed corporate network that is already running IP and or IPX protocols or if you are using the OfficeConnect Remote to connect to the Intemet you must configure the unit as a router When a bridge is first powered on it does not know the number or the locations of stations that are connected to the LAN To minimize the amount of data passed over the bridge it must leam the whereabouts address of stations to ensure that it passes only the data that is intended to be passed over the bridge Like the envelope of a letter the header of each frame of data transmitted on the network has a From source address and To destination address This ensures that data reaches its destination on the LAN and that the receiving station can reply The bridge reads every frame of data received at the LAN port and extracts the source address of the frame From this information it builds an
4. 1 11 dips 1 11 coaxial cable 1 9 commands IN 1 25 IPB 1 22 IPR 1 23 NA 1 20 NO 1 21 QC 1 18 concepts bridging and routing A 1 configuring your unit 1 17 connecting toaPC 1 9 connecting telephony equipment 1 16 connecting to 1 25 Internet 1 25 IP hosts on different networks 1 23 IP hosts on same network 1 22 Novell networks 1 21 WAN leased line link 1 28 contents checklist 1 4 crossover switch 1 9 D default password 1 18 E Ethemet 10Base2 port 1 14 10BaseT port 1 9 1 13 example networks 1 30 F feet 1 11 front panel LEDs 1 6 H hub dipping 1 11 I installation 1 10 10Base2 connections 1 14 10BaseT connections 1 13 ISDN connection 1 15 management terminal connection 1 16 power adapter 1 12 pre requisites 1 5 siting the unit 1 10 voice port connection 1 16 wall mounting 1 12 ISDN connection 1 5 1 9 1 15 port 1 9 ISDN OKLED 1 7 ISDN1 LED 1 7 ISDN2 LED 1 7 L LAN 10Base2 connections 1 14 10BaseT connections 1 13 10BaseT port 1 9 LEDs Alert 1 6 ISDN OK 1 7 ISDN1 1 7 ISDN2 1 7 LINKSTATE 1 7 Network Utilization 1 7 POWER 1 6 SERIAL WAN 1 7 VOICE 1 7 UNKSIATE LED 1 7 M management configuring yourunit 1 17 port 1 8 MDI MDIX switch 1 9 network supplier support D 2 Network Utilization LEDs 1 7 oO on line technical services D 1 P package contents 1 4 password 1 18 power adapter 1 12 power inlet 1 8 POWERLED 1 6 PPP routers 1 25 problem solving
5. 1 36 Q Quick Configuration 1 17 R rear panel 10BaseT port 1 9 ISDN port 1 9 powersocket 1 8 reset button 1 8 serial port 1 8 voice port 1 10 MAN port 1 9 rear panel connections 1 8 registration card 1 5 reset button 1 8 retuming products for repair D 3 rubber feet 1 11 S serial port 1 8 SERIAL WAN LED 1 7 setting up your unit 1 17 siting the unit 1 10 stacking clips 1 11 T technical support 1 5 troubleshooting 1 36 U unit name 1 20 V VOICE LED 1 7 voice port 1 10 VT100 terminal connection 1 16 WwW wall mounting 1 12 MAN connection 1 9 port 1 9 MAN configuration 1 28 LIMITED WARRANTY HARDWARE 3Com warrants its hardware products to be free from defects in workmanship and materials under normal use and service for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller Intemetworking products One year Network adapters Lifetime Ethemet stackable hubs and Unmanaged Ethemet fixed port repeaters Lifetime One year if not registered Power supply and fans in these stackable hubs and unmanaged repeaters One year Other hardware products One year Spare parts and spares kits 90 days If a product does not operate as warranted during the applicable warranty period 3Com shall at its option and expense repair the defective product or part deliver to Customer an equivalent product or part to replace the defective item or refund to C
6. 10BaseT LAN This socket allows direct connection between the OfficeGonnect Remote and a single piece of equipment as opposed to multi point LAN connections using 1OBese2 cabling systems The OfficeConnect Remote LAN port simulates the characteristics of a workstation port which allows it to be directly connected to a LAN or network hub port as required If the LAN port is to be connected directly to a single PC or workstation then you must implement the crossover by setting the MDI MDIX switch to the out position See MDI MDIX Switch for more information ISDN This port is used to connect to the ISDN network The port uses an Rj 45 connection socket situated to the left of the 10BaseT LAN socket A standard ISDN line wall socket is required to connect the ISDN cable to the ISDN port of the OfficeGonnect Remote VOICE where fitted This port is used to connect an optional public switched telephone network PSTN telephone handset or any other compatible analog equipment operating in digital tone multiple frequency DTMF mode by connecting the handsets plug into this port This port is in effect an analog to digital convertor which allows you to use your conventional PSTN telephone on an ISDN line It is capable of supporting ringing current and call progress tones and supports analog devices to a maximum ringer equivalence number REN of two United Kingdom Providing one of the two 64 Kops ISDN channels is not being use
7. 13 Connecting to a Single Workstation 1 14 Connecting to Your 10Base2 LAN 1 14 Connecting to ISDN 1 15 Connecting to the WAN 1 16 Connecting to the VOICE Port 1 16 Connecting a Management Terminal 1 16 Location of OfficeConnect Fax and Print Servers 1 16 Quick Configuration 1 17 Starting Quick Configuration 1 17 About Quick Configuration 1 19 Setting the Unit Name 1 20 Connecting to a Novell IPX Network 1 21 Connecting to an IP Host on the Same IP Network 1 22 Connecting to an IP Host on a Different IP Network 1 23 Connecting to the Internet or a PPP Router 1 25 Monitoring ISDN Line Usage 1 28 Setting Up a WAN Link 1 28 Examples of Typical ISDN Networking Applications 1 30 Novell Network 1 30 IP Host on the Same IP Network 1 31 IP Host on Another IP Network 1 33 Intemet or PPP Router 1 34 Multiple Connections froma Single Site 1 35 Troubleshooting 1 36 BRIDGING AND ROUTING Introduction A 1 Bridging and Routing Concepts A 1 Guidelines For Choosing Bridging or Routing A 2 How BridgesLeam A 2 Bridging Between Remote Sites A 3 Building a Larger Network A 4 Multiple Paths Between Bridged LANs A 5 Network Topology A 6 Broadcast Storms A 6 Optimum Use of Resource A 6 Network Organization Structure and Physical Layout A 7 The Intemet A 7 Routing IP and IPX A 7 IP Routing A 9 IPX Routing A 11 IP Addresses A 12 Numbered and Unnumbered Links A 15 TECHNICAL INFORMATION Specifications B 1 LAN Connector Interfa
8. 38 for more details ons LAN connected ISDN OK Green This LED indicator provides confirmation of the state of the ISDN line a On Indicates the OfficeConnect Remote is connected to a working ISDN line Sometimes this LED does not light until the firs call attempt is made a Flashing A fault condition has been identified on the ISDN line a Off No ISDN connection present ISDN1 and ISDN 2 Yellow These LED indicators provide confirmation that an ISDN call is in progress on ISDN Channel 1 or Channel 2 You are connected to a remote ISDN unit and are incurring ISDN call charges while this LED is lit If the LED is flashing it indicates that a call is being made but a connection has not yet been made to the remote unit 1 8 CHAPTER 1 GETTING STARTED VOICE Yellow If a Voice port is fitted this LED shows the status of the voice connection a On A voice call is in progress a Flashing Indicates that handset is off the hook and a dial tone is present or a call is being dialled or ringing out It also shows if the handset is ringing receiving an incoming call MAN Yellow This LED indicator provides confirmation of the state of the WAN link if fitted If the LED is lit the WAN connection is valid and can pass data across the link If the LED is flashing it indicates a fault on the WAN port ISDN Utilization Green Yellow These LEDs show the ISDN utilization as a percentage of network loading If you cons
9. ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED EITHER IN FACT OR BY OPERATION OF LAW STATUTORY OR OTHERWISE INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE OR USE OF ITS PRODUCTS OFFICECONNECT REMOTE SUPPLEMENTARY INFORMATION 3 OfficeConnect Remote 531 The OfficeConnect Remote 531 provides the same functionality as the OfficeConnect 530 with the additional on board memory allowing more sophisticated software such as that provided by the OfficeConnect Remote A software upgrade to be installed in the unit Follow the OfficeConnect Remote 530 installation instructions described in the OfficeConnect Remote User Guide Refer to the OfficeConnect Remote Software Reference if further configuration information is required EMC Update The statement on page 4 of the About This Guide section in the OfficeConnect Remote User Guide stating that the ISDN cable must be used in conjunction with a three turn ferrite to meet Class B of EN 55022 no longer applies 3Com Europe Limited December 1996 Part Number 981 000077 001
10. CTRLB 10 24 Control A CTRLA 3 WAN Port Connecting Cable V 24 V 28 EIER dientend Support Pin nes Signal name pin no Links P The MAN port terminates with a 25 way D type 25 way male 25 way male female connector The port can be configured to D type eben support V 24 or V28 signalling characteristics at data connector Ir transfer rates up to 19 2 Kbps The WAN port m 7 Signal Ground 102 7 connecting cable is not supplied with the unit The 8 Data Carrier Detect DCD 8 following signalling characteristics should be 109 observed when purchasing or fabricating a suitable 11 Signal Ground AutoS cable 12 Signal Ground AutoSense dient end i Pin oom end Si i x 15 Transmit dock TXAK 15 Links Pin no pin no 114 25 way male 25 way male 17 Receive Clock RXCLK 115 17 D type P re 18 Analog Loop Test 141 18 connector connector og Loop 141 20 Data Terminal Ready DTR 20 2 Transmit Data TXD 108 2 108 gt Receive DAAD 104 3 21 Remote Digital Loop Tet 21 4 Request To Send RTS 105 4 140 5 dear To Send RTS 106 5 22 Ring Indicator RI 125 22 6 Data Set Ready DSR 107 6 24 Btemal Clock EXCLK If clock signals are required connect Pin 24 to Pins 15 amp 17 at the 3Com end only Interface Cable Characteristics B 7 WAN Port Connecting Cable V 35 V 36 Pin Signal name Jien end Support Links 2Comend pin no in no The WAN port terminates with a 25 way D type 34 way MRAC female conn
11. It is important to understand that in a bridged network the addressing structure for both IP and IPX relates to a single network If the units in Figure A 3 were bridges and not routers then an IP node on LAN A could for example have an address 140 56 10 0 the node on LAN Ban address 140 56 10 2 and the node on LAN G an address of 140 56 10 3 All the nodes therefore are able to share the same Class B network address regardless of their location on the bridged network However if there were NetWare nodes throughout the three bridged sites they would also share the same IPX network number If each of the bridged LANs supported a network server each with its own unique network number and an IPX address is misconfigured the NetWare network server consoles will report the message Router Configuration Error Router XXX claims that LAN is X2 0COCXX The router it refers to is in fact the network server Network File Store Telnet NFS User Transmission Database Control Protocol Protocol UDP TCP TRANSPORT session PRESENTATION APPLICATION Internet Protocol IP and Internet Control Message Protocol ICMP NETWORK Link Level Control DATA LINK Ethernet Hardware PHYSICAL Figure A 4 Open Systems Interconnection Network Layer Model A routing environment allows stations to communicate indirectly Following the example in Figure A 3 let us assume that a station on LAN 1 wants to comm
12. are bridging leave this field at the default ee a een AFFE setting IPX Frame Type 862 2 Idle Threshold 2 ISTP Priority 2128 Idle Period 28 e If necessary change any of the other parameters WR 5 Line Speed bits s 64888 Demand Priority 8 to suit your WAN link In most cases the defaults Conpression LZ STANDARD BR Scramble DISABLED Backup Priority can be used Backup Denand Mode NONE Backup Alert ENABLED f Press CTRL HE to submit this configuration ee G Main menu E Submit L Prey menu The WAN port is now configured and provided the 1 0 remote unit s WAN port has also been configured data will be passed across the link Figure 1 15 Edit WAN Port Screen Enter SAVE at the command prompt to permanently store this configuration in the unit s memory Novell Network Many organizations base their local area networks on Novell NetWare servers and users may need to Examples of Typical ISDN Networking Applications This section describes four of the most common applications of the OfficeGonnect Remote All of these configurations can be carried out using the Quick Configuration option and no further configuration is necessary to make the unit operational However you may want to fine tune the performance of the OfficeConnect Remote The information provided in the Software Reference guide will help you do this The four typical applications are Connecting to a Novell Network Co
13. as commands This typeface is used to represent commands that you enter for example co IS NU Keys When specific keys are referred to in the text they are called out by their labels such as the Retum key or the Escape key or they may be shown as Retum or Esc If two or more keys are to be pressed simultaneously the keys are linked with a plus sign for example Press Gr HAltIHDell Italics Italics are used to denote new tens or emphasis Additional Safety Information gt See also the Important Safety Information at the front of this guide When using the unit observe the following safety information Retain this users guide for later use and pass it on in the event of change of ownership of the unit The power adapter supplied with the unit is fitted with a moulded plug for connection to a standard electrical mains system supply socket If this plug is not suitable for your connection to your mains supply contact your reseller for advice On no account should you attempt to connect to your mains supply using an inappropriate mains adapter Protect the unit from sudden transient increases and decreases in electrical power by fitting an in line surge suppresser or uninteruptable power supply Products manufactured by us are safe and without risk provided they are installed used and maintained in good working order in accordance with our instructions and recommendati
14. before contacting your 3Com reseller Verify that your computer is equipped with an available serial port and that the correct cables and connectors are being used If in doubt contact the unit s supplier Confirm that a The switched outlet socket of the electrical mains system supply is tumed on The main lead is correctly plugged into the unit s electrical mains system inlet socket b The switched outlet socket is live by plugging the unit into an altemate socket to see if it functions Malfunction Remedy Malfunction Remedy The ISDN OK LED Follow the procedures as outlined for The If other LEDs do During normal operation the remaining unit does not light POWER LED does not light not light during LEDs should light and extinguish depending a Ensure that the OfficeConnect R te is oe h the Soe ARE CEDE ALLO powi up and the POWER LED is lit unit light in accordance with their function refer to Front Panel on page 1 6 then contact b Confirm that the ISDN UTP cable is your supplying 3Com reseller correctly connected and that the cable is attached to the socket marked ISDN The local unit a Check the connections between the unit does not connect the network or PC and the ISDN line c Confirm that the ISDN line socket that is to the remote a connected to the unit is conveying an unit b Confirm that the line is working by ISDN service connecting a telephone to the ISDN line to make a
15. call d Check that the ISDN port is configured using the CO PO command See the c Check that the number which you are Software Reference guide for more dialling is connected to the remote unit information about this command and thet the unit is configured to be able to answer calls e Try making an ISDN call using a telephone connected to the ISDN line to confinn if the line is operational f Ifthe LED still fails to light plug the UTP cable into an altemate ISDN service socket to confirm that it functions g Try using an atemate UTP cable to connect the unit to the ISDN service socket A DR Introduction During the initial configuration of the OfficeConnect Remote you must decide whether to configure the unit as a bridge or as a router although we may help you with this choice with our Quick Configuration options If you are unsure which option you should choose read this appendix to help you decide Bridges and routers are used to connect networks together The cost of connecting networks together is generally proportional to the distance over which the network extends and the amount of bandwidth required Large amounts of bandwidth can be provided easily within a LAN by connecting different segments together with a local bridge However it becomes impractical and expensive to extend this bandwidth over larger distances and it is therefore usual to interconnect local high speed networks using bridges o
16. cost effective connection to the Intemet or into a large organization s global network Va gt Fa Se K Local Site Internet J wm nN Internet Service Provider s Router PPP Router providing access to corporate global network N gt Corporate Network Figure 1 19 PPP Connections to the Internet and Corporate Network Examples of Typical ISDN Networking Applications 1 37 Multiple Connections from a Single Site In some instances it is likely that you will need to connect to Novell servers on one site IP hosts on the same remote site or possibly a different remote site and a connection into the Internet This can all be achieved by running the simple configuration several times until all the desired types of connection have been configured The only thing you need to be aware of is that you cannot bridge and route the same protocol The local site shown in Figure 1 20 is a small business that needs data links to several of its clients and a connection to the Internet It has an IPX connection to access information on one client s NetWare server and IP routed connections to several IP hosts at different clients sites Finally there is a connection to the local Internet service provider s PPP router giving fast access to the Intemet All connections can be set up with an autocall so
17. for full IP and IPX routing Protocol transparent bridging Sophisticated data packet filtering to provide network security Provides NetWare protocol spoofing Data compression based on an optimized Lempel Ziv algorithm Remote and local management Flash erasable programmable read only memory EPROM allowing the remote upgrading of the units operating system Uses simple network management protocol SNMP and provides management information base MIB II support Introduction 13 Benefits of ISDN ISDN is an extension of the national and intemational public switched telephone network which offers a digital end to end telecommunication system providing a better quality service than available using the analog telephone network The principal benefits of ISDN are Fast call setup times typically taking less than one second for national calls Greater bandwidth with multiple channels The basic rate service often referred to as ISDN 2 caries two 64 Kbps user channels called B channels and one 16 Kbps control channel called the D channel The line service is presented into the customers premises through a standard Rj 45 socket A significant aspect of the ISDN service is that it can be provided over the same wiring that was installed for the original telephone service Therefore ISDN can be made available relatively cheaply almost anywhere that previously had access to the analog system The cost of installation
18. hub from diding around on your desk Stick the feet to the marked areas at each comer of the underside of your hub The four stacking clips are used for neatly and securely stacking your OfficeConnect units together You can stack up to a maimam of four units Large units must be stacked below small units To stack your units secure the clips on one side and then on the other Use the following method to secure one side Place your new unit on a flat surface Your dips fit in the positions on the side of the unit as shown in Figure 1 3 1 Position a clip over one of these holes and push it in until it dicks into place as shown in Figure 1 3 2 Repeat this for the other clip position on the same side Keeping the front of the units aligned rest the bottom of the new unit on the clips spikes as shown in Figure 1 3 3 Push the clips finmly into the new unit until they click into place Using the Rubber Feet and Stacking Clips 13 Wall Mounting the OfficeConnect Remote There are two slots on the underside of the OfficeConnect Remote which are used for wall mounting You can mount the unit with the LEDs facing upwards or downwards to suit your needs When wall mounting your OfficeConnect Remote ensure that it is within reach of the mains socket If your existing unit is small use these holes existing unit is large use these hole You need two suitable screws Ensure that the wall you are going to use
19. increased flexibility The range of OfficeConnect Remote units is as follows OfficeConnect Remote 510 Provides connection from 10BaseT or Thin Ethemet 10Base2 LANs to ISDN services for data transfer between remote sites OfficeConnect Remote 520 In addition to the data transfer facilities this model has a Voice port allowing a telephone or other equipment such as a Fax to communicate via ISDN OfficeConnect Remote 530 This model has the ISDN and Voice port facilities and additionally the ability to connect via a WAN port to a serial leased line All of the above models are available with U or S ISDN interfaces Typically the OfficeConnect Remote is used to interconnect LANs running protocols such as Transmission Control Protocol Intemet Protocol TCP IP or Novell Intemetwork Packet Exchange IPX Offering full LAN to LAN connectivity at speeds up to 64 Kilobits per second Kops on each ISDN channel and up to2 Megabits per second Mbps on the WAN port where fitted the OfficeGonnect Remote is a compact desktop unit with unrivelled price and performance The principal features of the OfficeConnect Remote are Easy to install configure and support ISDN 2B D port supporting Basic Rate interface of two 64 Kbps or two 56 Kbps channels in the USA and a 16 Kbps control channel Optional voice port Optional Leased line wide area network WAN access port Data terminal equipment DTE management port Support
20. is used enter the value you are given by your ISDN service provider Leave this field blank if you have not been provided a SPID Directory Number 1 and 2 Enter the ISDN number associated with each SPID Press CTRLJHE to submit these parameters Connecting to a Novell IPX Network To connect to a Novell network using FastGonnect enter NO at the command prompt on the Quick Configuration screen to display the screen illustrated in Figure 1 11 Terminal WINDOWS TRM EI File Edit Settings Phone Transfers Help CONNECT TO NOVELL NETWORK ETSI ISDN Do you have a local server No ISDN number of the remote unit you want to call Call Type 64K Unrestricted Ww Help G Main menu E Submit L Prey menu Figure 1 11 Connecting To A Novell Network Complete the fields on this screen as follows Quick Configuration 1 23 Do you have a local server Use the Spacebar to toggle this field to Yes or No as appropriate If you have a local server the unit s configuration is updated to ensure that no data destined for local servers is passed over the link Remote ISDN Number Type the ISDN number of the remote unit that connects to the Novell network Call Type Set the Call Type for each ISDN number Use 64k Unrestricted for Euro ISDN lines Use 56k 110 or 56k_restricted in the USA depending on the requirements of your ISDN service provider Press CTRL HE to submit this informatio
21. is smooth flat dry and sturdy Make two screw holes which are 142 mm 5 6 in apart Fix the screws into the wall leaving their heads 3mm 0 12 in dear of the wall surface Remove any connections to the units and locate it over the screw heads When in line gently push the OfficeConnect Remote on to the wall and move it downwards to secure When making connections Figure 1 3 Clipping Your Units Together be careful not to push the unit up and off the wall Repeat these steps to secure the other side T CAUTION Only wall mount single units do not wall mount stacked units To remove a clip hold the units finm y with one hand and hook the first finger of your other hand around the back of the clip Use reasonable force to pull it off Connecting the Power Adapter 3 CAUTION First read the section Important Safety Information at the start of this manual Isolate the dectrical mains system supply before commencing installation Ensure any on off power switches at the outlet socket are set to their OFF positions Connect the jack of the power adapter to the socket on the rear panel of the OfficeConnect Remote see Rear Panel on page 1 8 Plug the mains lead of the power adapter into an adjacent electrical mains system socket and if necessary tum on the power at the outlet socket The OfficeConnect Remote performs a self test and loads the software During the self test and software loading
22. not provide much extra benefit Routing IP and IPX A7 Network Organization Structure and Physical Layout Routing IP and IPX Some organizations are structured into departments Running a bridged network allows workstations to determined by the physical layout of their work communicate directly between one another A PC environment so it is natural to divide the corporate user wishing to communicate with a remote network network into separate logical networks Routing server is totally unaware of any intervening bridges becomes the obvious candidate for handling these This is known as transparent operation individual LANs The Internet ee The protocol adopted by the Defense Data Network DDN for the Internet is based on obtaining and abiding by a registered Internet address range This hae makes a router the ideal choice for accessing the Internet Unfortunately new applicants are likely to Pis ms only get a Class C registered Internet address F preventing more than 254 connections on one f bridged IP LAN LAN 2 Bridge D LAN 3 A Figure A3 Bample Network
23. of a particular system resource or peripheral through a workstation attached to a local or wide area network Ciient server A user who is attached to a file server to recover and store files but the processing of the data or use of an application is carried out on the client machine Coaxial cable A twin conductor cable used for computer networking in either a thick or thin form This cable consists of a centre core wire stranded or single core covered by insulation a second conductor of woven wire and an extemal covering of rubber Thin coaxial cable reserrbles television cable Thick coaxial cable has an increased diameter outer bore and is often yellow or orange in color CSMA CD Canier Sense Multiple Access with Collision Detection the Ethemet protocol that allows each device to create and send its own data packets CSMAYCD is used to avoid excessive collisions between packets as they are randomly transmitted A CSMA CD device first listens for other camiers if it detects no other cariers it will then allow the data packet to be transmitted If a collision is detected the device stops transmitting waits a random length of time and begins transmitting again D Channel A control channel carrying signalling information running at 16 Kbps The basic rate ISDN 2 service caries two B channels plus one control D channel Refer to ISDN and B anna Data Characters or code either entered by the user or passed between devices th
24. the ALERT and POVVER LEDs flash Connecting to Your 10BaseT LAN 10BASE T cable with RJ45 connectors Maximum length is 100 S meters 328 feet Z de Got ee Figure 1 4 Connect The UTP Cable To OfficeConnect hub You can connect the OfficeConnect Remote to a hub using 10BaseT cable in the following way Connect the UTP cable not supplied to the 10BaseT port of the OfficeConnect Remote Connect the other end to a 10BaseT port on your hub 10BASET port In house LAN connection box Figure 1 5 Connect The UTP Cable To In House Lan Connection Box To connect the OfficeConnect Remote to in house LAN 1 Connect the UTP cable not supplied into Rj 45 socket marked LAN on the OfficeConnect Remote 2 Connect the other end of the cable into the female socket of the in house LAN connection box as shown in Figure 1 5 or directly to a LOBaseT hub port Using the Rubber Feet and Stacking Clips 1 15 Connecting to a Single Workstation To connect the OfficeGonnect Remote to a single personal computer or workstation Implement the crossover for the 10BaseT port on the OfficeConnect Remote by setting the MDI MDIX switch to MDIX out Connect the UTP cable not supplied directly into the R45 socket marked LAN on the OfficeConnect Remote Connect the other end to the 10BaseT socket on the workstation s Ethemet adapter Connecting to Your 10Base2 LAN You can use the10Base2
25. to leam the topology of the rest of the network Once this has been performed the OfficeConnect Remote will only make ISDN calls to transmit data packets While this data transfer is in progress RIP updates will be piggybacked on to the call updating both parts of the network with the latest RIP information It is also possible to assign what are known as static routes which are manually entered fixed routes The network manager may be aware of specific traffic pattems or needs to enforce a particular routing policy Static routes provide an option to force traffic through the network in a particular way The disadvantage with this approach is that routing protocols dynamically update all the routers on the network with the current network topology enabling backup routes to be deployed In a static route situation if the WAN links in that routing definition are down then traffic cannot be passed Implementing a static route prohibits the router from being able to offer alternative data paths IPX Routing Novell IPX also uses RIP for routing purposes Although it is similarly named to the IP equivalent it uses a different protocol IPX RIP broadcasts datagrams out onto the network every sixty seconds Upon receipt of a RIP datagram a router adds one to the hop count of each route advertised and broadcasts a RIP datagram to the other networks with which it is connected The cost of a route in an IPX network is determined by t
26. way ISDN calls are keptto a OfficeConnect Remote has determined that the minimum server ison the Remote Site all data between the server and workstation is passed over the link Local Site Remote Site Figure 1 16 Connecting to a Remote Novell Network In the example shown in Figure 1 16 the Local Site is connected to a Remote Site The Local Site shown has several workstations and a server but could equally consist solely of workstations or even a single workstation such as in the case of a homeworker The Remote Site may be a central site for an organization or simply another like sized office If you are connecting to the remote site over a WAN leased line link the OfficeGonnect Remote has no need to spoof the IPX protocol as there is a permanent connection in place Once the IP Host on the Same IP Network If your organization operates a TCP IP network and needs to extend the IP network over geographically remote sites it is possible to bridge the network using the OfficeConnect Remote It is only possible to bridge where both sites have the same network address and the devices are on the same subnet In a class C IP address the network address is the first three groups of numbers For example 192 000 000 xxx where xxx represents the host ID of the individual devices on the subnet Se
27. Appendix A the first time it is possible you may make mistakes introduction to IP and IPX protocols VE have tried to identify the likely errors you may make and have provided hints and tips to help you recover from error situations Technical Information and cable specifications Appendix B Glossary of technical terms Appendix C Technical Support information Appendix D Once you have carried out the intial configuration of the unit using the Quick Configuration option you can carry out additional configuration to optimize the units performance on your network Refer to the Software Reference guide for more details Conventions The icon conventions that are used throughout this guide are Type Description The text conventions used in this guide are Convention Description Information Note Information notes call attention to important features or instructions Caution Cautions alert you to personal Safety risk system damage or loss of data Waming Wamings alert you to the risk of D gt Vv severe personal injury Enter vs Type When the word enter is used in this guide it means type something then press the Retum or Enter key Do not press the Retum or Enter key when an instruction simply says type Text represented as screen display This typeface is used to represent displays on your screen for example Enter the unit s IP address Text represented
28. CP IP Numbering and subnet masking IP numbers or addresses are nonmally made up of four fields normally called bytes with each byte having a whole number value of between O and 255 and the bytes separated by a full stop For example 123 123 123 123 An IP address is divided into two sections one is the Network Address section and the other is the Host Address section For example 12331233 123 123 Network Host The divider between the two sections is moveable according to what class of IP address it is The dass of address is defined by what the number is in the first address byte For a Class A IP address the number in the first byte will be in the range 00 to 126 For a Class B IP address the numbers in the first amp second bytes will be in the range 128 001 to 191 254 For a Class C IP address the numbers in the first second amp third bytes will be in the range 192 000 001 to 223 255 254 For example AssA 1 123 123 123 Network Host GasB 128 001 123 123 Network Host AsssC 192 123 123 1123 Network Host Using of any of the address dasses in a private TCP IP network is not a problem providing that connections outside of that private network to extemal public or private TCP IP networks are never needed If a private IP addressing number scheme is established within a private corporate network connections out of that network to extemal public or other private TCP IP networks can be achieved via a com
29. Coaxial port to connect to your network and to other OfficeConnect units When using 10Base2 cable it is important that both ends of the segment are properly terminated with 50 Ohm end pieces Only use 50 Ohm 10BaseT cables and use a Y piece for each unit to ensure adequate clearance of the other ports Due to the small size of the unit you may find that a traditional T piece does not provide enough clearance to allow space for fingers and cables when units are stacked together 1 Connect a 10Base2 Y piece to each OfficeConnect unit and every other device to be connected 2 Daisy chain each Y piece with a length of 10Base2 N coaxial cable to form a single ment as shown in 10BASE 2 50 Ohm cable If Maximum segment length is ngle seg Minimum length is E 185 meters 607 feet Figure 1 6 Remember to teminate the two free ends 0 5 meters 1 6 feet from end piece to end piece of the segment by fitting end pieces To disconnect a 10Base2 cable twist each connector Figure1 6 Connecting 10Base2 Cable counter clockwise to unlock it and remove it Using the Rubber Feet and Stacking Clips 1 17 Connecting to ISDN Connecting to the WAN If your OfficeConnect Remote unit is fitted with a WAN port you can connect to a WAN Network Terminating Unit NTU fitted by your WAN service supplier Using a suitable WAN cable as described in Appendix B connect one end
30. PPORT oo tee fe 3Com provides easy access to technical support information through a variety of services This appendix describes these services On line Technical Services 3Com offers worldwide product support seven days a week 24 hours a day through the following on line systems m 3Com Bulletin Board Service 3ComBBS m World Wide VVveb site 3Com Bulletin Board Service 3ComBBS contains patches software and drivers for all 3Com products as well as technical articles This service is available via modem or ISDN seven days a week 24 hours a day Access by Modem To reach the service by modem set your modem to 8 data bits no parity and 1 stop bit Call the telephone number nearest you Country Data Rate Telephone Number Australia up to 14400 bps 61 2 9955 2073 France up to 14400 bps 33 1 69 86 69 54 Germany up to 9600 bps 49 89 627 32 188 up to 9600 bps 49 89 627 32 189 Hong Kong up to 14400 bps 852 2537 5601 Italy fee required up to 9600 bps 39 2 273 00680 Japan Singapore Taiwan UK US up to 14400 bps up to 14400 bps up to 14400 bps up to 14400 bps up to 14400 bps 81 3 3345 7266 65 534 5693 886 2 377 5838 44 1442 278278 1 408 980 8204 Access by ISDN ISDN users can dial in to 3ComBBS using a digital modem for fast access up to 56kbps To access 3GomBBS using ISDN dial the following number 1 408 654 2703 D 2 TECHNICAL SUPPO
31. Part No 980 000033 001 Published January 1996 OFFICECONNECT REMOTE 510 520 530 USER GUIDE Please read the Supplementary Information section of this manual for details of the OfficeConnect 531 model and an EMC Update 3Com Corporation m 5400 Bayfront Plaza m Santa Clara Califomia m 95052 8154 3Com Sonix Limited 1996 All rights reserved No part of this documentation may be reproduced in any form or by any means or used to make any derivative work such as translation transformation or adaptation without permission from 3Gom Sonix 3Com Sonix reserves the right to revise this documentation and to meke changes in content from time to time without obligation on the part of 3Gom Sonix to provide notification of such revision or change 3Gom Sonix provides this documentation without warranty of any kind either implied or expressed including but not limited to the implied warranties of merchantability and fitness for a particular purpose 3Gom Sonix may meke improvements or changes in the product s and or the program s described in this documentation at any time UNITED STATES GOVERNMENT LEGENDS If you are a United States government agency then this documentation and the software described herein are provided to you subject to the following restricted rights For units of the Department of Defense Restricted Rights Legend Use duplication or disclosure by the Goverment is subject to restrictions as set forth in subp
32. RT World Wide Web Site m Alist of system hardware and software induding Access the latest networking information on 3Comis World Wide Web site by entering our URL into your Internet browser http www 3com com This service features news and information about 3Com products customer service and support 3Coms latest news releases selected articles from TM 3TE H 3Coms award winning technical joumal and more revision levels Details about recent configuration changes if applicable If you are unable to contact your network supplier see the following section on how to contact 3Gom Support from Your Network Supplier If additional assistance is required contact your network supplier Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services induding network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready Diagnostic error messages Support from 3Com If you are unable to receive support from your network supplier technical support contracts are available from 3Com In the U S and Canada call 800 876 3266 for customer service If you are outside the U S and Canada contact your local 3Gom sales office to find your authorized service provider Country Telephone Number Australia Sydney 61 2 959 3020 M
33. RTS 4 connector connector not connected not connected Shell Screen Screen Shell 8 CIS DIR 20 3 TxD RxD 2 6 DSR cs 5 Re a 1 DCD DSR 6 5 Ground Ground 5 4 DTR t pc 8 7 RTS RTS 7 not connected not connected 8 crs DIR 4 6 DSR CTS 8 1 DCD DSR 6 4 DIR _ DO 1 Modem Cable If you want to connect to the manager port using a modem you will need a cable as shown in the table below This connects the manager port s 9 pin D type connector to a 25 pin serial port on a modem Interface Cable Characteristics B 9 LAN Port Connecting Cable 10BaseT The LOBaseT port terminates with an Rj 45 connector which can be connected to the 10BaseT port on another device The table below shows the pin outs Terminal or Com end Signal Name Pin Signal Name port 3Com end 7 pin number E Links pin no 25 way 9 way male mele ferde connector connector Shell Screen Screen 1 3 DD DD 2 2 RxD RxD 3 7 RTS RTS 4 8 CIS CTS 5 6 DSR DSR 6 5 Ground Ground 7 1 DCD DCD 8 4 DIR DIR 20 for a straight through cable 3Com end dient end Pin pin no pin no Links R45 Signal name RJ 45 1 TxD 1 2 TxD 2 3 RxD 3 4 not used 4 5 not used 5 6 RxD 6 7 not used 9 8 not used 10 3CA09000 25 pin to 25 pin D type plug with 3 Ordering Information meters of cable V 24 3C410000 OfficeConnect Remote 510s 3C409001 25 pin D type plug to 34 way MRAC 3C410005 OfficeConn
34. Settings Phone Transfers Help HAIN HENU ETSI ISDN Down qc Quick Configuration Conf Configuration STats Status Statistics Monitor REHote Remote Management DOnate Donate Software to Remote Quit Disconnect Hain menu L Prev menu Enter command Figure 1 8 The Main Menu Screen 2 If the terminal emulator has been correctly configured pressing RETURN displays the Enter Password screen 3 Enter the default password PASSWORD using uppercase characters The Main Menu appears as shown in Figure 1 8 Terminal WINDOWS TRM ag File Edit Settings Phone Transfers Help QUICK CONFIGURATION ETSI ISDN Down NAme Set the name and other unit parameters Novell Connect to a Novell network IPBridge Connect to an IP host on the same network IPRouter Connect to an IP host on another network INternet Connect to the Internet or another PPP router qc Enter command Figure 1 9 Quick Configuration Menu 4 At the command prompt enter QC The screen changes to display the Quick Configuration menu shown in Figure 1 9 About Quick Configuration gt You can configure the unit to connect to other Novell networks to bridge to hosts on the same IP network a network with the same IP network address to route to a different IP network an IP network with a different IP network address and to connect to the Intemet or other Point to Point Protocol PPP router By u
35. a UNIX platform Node An altemative name for a computer or device such as a printer or modem that is connected to a network NOS Network operating system OSI Open Systems Interconnection a body of standards set by the Intemational Standards Organization to define the activities that must occur when computers communicate There are seven layers and each contains a specific set of rules to follow at that point in the communication PAP Password Authentication Protocol Part of the PPP protocol to ensure authentication of the connection between two devices Peer to peer network A network which contains workstations which are able to act as both client and client servers Piggyback A way of transmitting routing information over ISDN lines by adding it to valid data frames This avoids ISDN calls being generated solely for passing routing information Physical layer The first layer of the OSI network layer model This layer manages the transfer of individual bits of data over wires or whatever medium that is used to connect workstations and peripherals Polling A method of controlling terminals on a multi point network where each device is interrogated in tum to determine if the device is ready to receive or transmit data PPP Point to Point Protocol The de facto standard protocol for routing between devices made by different manufacturers Presentation layer The sixth layer of the OSI network layer model This layer c
36. a registered trademark of Castelle Corporation Novell and NetWare are registered trademarks of Novell Inc Windows is a trademark of Microsoft Corporation VT100 is a registered trademark of Digital Equipment Corporation Other brand and product names may be registered trademarks or trademarks of their respective holders IMPORTANT SAFETY INFORMATION WARNING Wamings contain directions that you must follow for your personal safety Follow all instructions carefully Please read carefully and thoroughly the following information before installing the OfficeGonnect Remote Exceptional care must be taken during installation and removal of the unit Only stack the OfficeGonnect Remote with other OfficeConnect units Only use the power adapter that is supplied with the unit to ensure compliance with intemational safety standards It is essential that the mains socket outlet is located near the unit and is accessible You can only remove power to the OfficeConnect Remote by disconnecting the power adapter from the unit or from the socket outlet The safety status of the interconnection port on this equipment are as follows Ports identified by the labels VOICE and ISDN TNV Ports identified by the labels SERIAL COAX 10BASET and WAN SEV TNV telecoms network voltage is a dircuit which under normal operating conditions carries telecommunication signals SAY safety extra low voltage is a secondary circuit which
37. address table of stations it knows to be on the LAN To decide if data should be passed over the bridge the bridge examines the destination address of the frame If the address is already in its address table the bridge knows the destination is on the LAN and therefore rejects or filters the frame If the destination address is not in the address table the bridge transmits the data across the bridge It does this even if the destination device is on the local LAN because it does not recognize the destination station as local However ifthe destination device is on the local LAN once it replies to the original source station its own source address is part of the data frame and it is leamed by the bridge and added to the address table By operating in this way the amount of data forwarded by the bridge is kept to a minimum Traffic that is for devices on the attached LAN is rarely forwarded over the bridge A bridge can be configured to forget or age a station s address after a period of inactivity a facility which is used to ensure that stations which are no longer attached to the LAN do not remain in the bridges address table using up space that may be required for other stations addresses Some bridges allow address information to be manually configured into the bridge provided the automatic leaming facility is tumed off although this will not normally prove necessary unless specific traffic filtering is required Br
38. and rental of basic rate ISDN lines has dropped to the point where it is extremely attractive as regards cost and performance CHAPTER 1 GETTING STARTED Using ISDN to Support Leased Line WAN Circuits ISDN provides an ideal service to connect remote LANs To be effective the connecting bandwidth needed is at least 64 Kbps to achieve a realistic throughput Slower speed links can be used but usually only when usage is low and infrequent or if higher speed circuits cannot be provided Leased digital point to point circuits can still be cost effective if usage spans many hours per day However as ISDN tariffs reduce this balance also changes ISDN can be used to provide effective backup of these point to point WAN circuits in two ways Firstly if the point to point circuit fails an ISDN channel can be dialled up automatically and quickly to provide an altemative path to the remote unit Secondly if the leased circuit becomes heavily loaded due to peaks in the traffic between remote bridges or routers additional bandwidth can be automatically dialled up to supplement the bandwidth of the leased circuit The interconnected bridges would then treat the leased line and ISDN channel as parallel links sharing the load across the two Pack Contents Checklist Before you install your OfficeGonnect Remote check the contents of the box against the pack contents checklist below If any of the items have been damaged in transit or are
39. aragraph c 1 ii for restricted Rights in Technical Data and Computer Software clause at 48 CFR 52 227 7013 3Com Sonix Limited Merchants House Wilkinson Road Cirencester Gloucestershire GL7 TYT For dvilian agendes Restricted Rights Legend Use reproduction or disclosure is subject to restrictions set forth in subparagraph a through d of the Commercial Computer Software Restricted Rights Clause at 48 CFR 52 227 19 and the limitations set forth in 3Com Corporation s standard commercial agreement for the software Unpublished rights reserved under the copyright laws of the United States If there is any software on removable media described in this documentation it is fumished under a license agreement included with the product as a separate document in the hard copy documentation or on the removable media in a directory file named LICNSETXT If you are unable to locate a copy please contact 3Com Sonix and a copy will be provided to you Unless otherwise indicated 3Gom registered trademarks are registered in the United States and may or may not be registered in other countries 3Com Boundary Routing and Transcend are registered trademarks of 3Gom Corporation OfficeConnect is a trademark of 3Com Corporation 3Gom Laser Library 3TECH CacheCard and SmartAgent are trademarks of 3Com Corporation 3GomFacts and are service marks of 3Gom Corporation CompuServe is a registered trademark of CompuServe Inc Castelle is
40. at are part ofthe computer or network Data communications The transfer of data via transceiver equipment by means of data transmission according to a protocol Refer to Protocol CHAPTER C GLOSSARY Datagram A message that is sent from one computer or device to another to confimmit location or status on a network Data link layer The second layer of the OSI reference model This layer is responsible for controlling message traffic Data packet padket A sequence of binary digits including data and control signals that is transmitted across a LAN or WAN DCE Data circuit terminating equipment DTE Data Terminal Equipment The physical interface and link access procedures between DTE and data circuit terminating equipment DCE DTMF Dial tone multi frequency the signalling system used by PSTN Refer to PSTN Downloading A user initiated transfer of data froma server to the users own workstation Also used to Classify the transfer of files from one system to another usually to upgrade or revise system software EPROM Erasable programmable read only memory A chip whose memory can be erased and reused Ethemet A 10 Mbps baseband local area network protocol compatible with IEEE 802 3 standards FastConnect The OfficeConnect Remote s proprietary connection protocol that allows fast connection between units either over the ISDN link or over a permanent leased line WAN link Fiber optics A technology that uses laser
41. ations supplier for assistance A suitable cable to connect to your ISDN socket A 15 meter ISDN cable is supplied with this unit The ISDN telephone number of the remote ISDN unit in order to carry out the connection configuration procedure A suitable WAN cable if you are connecting to the remote site over a leased line 1 6 CHAPTER 1 GETTING STARTED OfficeConnect Remote Front and Rear Panel Features Front Panel OFFICE Sa ZZ CONNECT 3 m Port Status gt ISDN Utilization Q E E aM At PME LINK ISDN ISDN ISDN VOICE WAN 1 5 15 25 50 75 85 100 woi 2 Senna Figure 1 1 OfficeConnect Remote Front Panel Features ALERT Orange This LED indicator shows four m On Problem detected Refer to states Troubleshooting on page 1 38 for more Off Normal operation and no faults detected info rO Sowfi h Loading soft during power up or POER Green This LED indicator shows three states new software is being downloaded to the unit On Power is connected to the unit Quick flash Self test during power up Slow flash New software is being downloaded to the unit Introduction 1 7 Quick flash Self test or software loading during LINK Orange This LED indicator shows the power up condition of the LAN connection Off No power supplied to the unit See a Off No LAN connection detected Troubleshooting on page 1
42. ces B 1 WAN Connector Interface B 1 ISDN Connector Interface B 1 Voice Connector Interface B 1 Management Connector Interface B 1 Bridge Characteristics B 2 Performance B 2 Approvals B 2 FCC Requirement B 3 Dimensions B 4 Interface Cable Characteristics B 5 WAN Port Connecting Cable VIYX21 Support B 5 WAN Port Connecting Cable V 24 V 28 Support B 6 WAN Port Connecting Cable V 35 V 36 Support B 7 Manager Port Connecting Cable B 8 Modem Cable B 9 LAN Port Connecting Cable 10BaseT B 9 Ordering Information B 10 GLOSSARY TECHNICAL SUPPORT On line Technical Services D 1 3Com Bulletin Board Service D 1 World Vide WebSite D 2 Support from Your Network Supplier D 2 Support from3Com D 2 Retuming Products for Repair D 3 INDEX ABOUT THIS GUIDE Introduction How to Use This Guide This guide describes the features installation and This table shows where to find specific information initial configuration of the OfficeConnect Remote The guide has been designed to be used by both If you are looking for information on Tum to first time and experienced computer network users About the OfficeConnect Remote s features a Chapter 1 who want to install and use the OfficeConnect description of the front panel indicators and rear Remote Xx panel connectors and step by step installation and configuration instructions If you are working with an ISDN bridge or router for An overview of bridging and routing and an
43. cludes ISDN Integrated Services Digital Network This provides a high speed dialup facility to allow your OfficeConnect Remote to automatically and quickly dial remote offices transmit your data between remote PCs just as speedily and then disconnect the call You incur minimum ISDN telephone charges as calls are made only when needed This is known as Dial on Demand CHAPTER 1 GETTING STARTED ISDN can also be used to make voice calls using the OfficeConnect Remote from an ordinary telephone handset connect faxes and other similar office equipment All OfficeGonnect Remote models have facilities for ISDN data transmission Some models have an additional port for voice calls and or a port to handle a third category of connection over a serial WAN port The WAN port connects to a permanent leased line also available from your telephone carrier organization Leased lines are available to work at a range of speeds which incur higher costs the higher the line speed The benefit of leased lines is their permanence and fixed cost No dialling is required but unlike ISDN you pay a fixed cost regardless of whether you transfer little data or high volumes of data 24 hours a day Overall ISDN is probably the most cost effective solution for small businesses However if your requirements to move data between sites is likely to increase you should consider purchasing the OfficeConnect Remote model fitted with both ISDN and WAN ports to ensure
44. d by the unit then a voice call can be made Incoming ISDN traffic carries both a voice and data identifier and depending on the type of transmission a voice call is automatically directed to the appropriate port connected to the telephone handset The VOICE port isterminated with an RJ 11 socket If your telephone equipment uses a different connector jack you will need to obtain a suitable convertor to connect to the VOICE port A British Tdecom to RJ 11 Introduction 1 11 convertor is supplied with UK modas fitted with a Voice port Installation Siting the OfficeConnect Remote When siting the OfficeConnect Remote ensure It is accessible and cables can be easily connected It is out of direct sunlight and away from sources of heat Cabling is away from Sources of electrical noise such as radios transmitters and broadband amplifiers Power lines and fluorescent lighting fixtures Weter or moisture cannot enter the case of the unit Air flow around the unit and through the vents in the side of the case is not restricted We recommend that you provide a minimum of 25mm approx 1 inch clearance around the unit To prolong the operational life of your equipment Never stack OfficeConnect units more than four high and ensure that they are clipped securely together Do not place objects on top of any unit or stack Using the Rubber Feet and Stacking Clips The four self adhesive rubber feet prevent your
45. e IP Addresses in Appendix A for more information about addresses Typically IP bridging would be used to connect a back office or home office into a main site Any further network connections would be carried out from the main site An example of such a network is shown in Figure 1 17 During configuration you enter the ISDN number and the IP addresses of any hosts to which you want to connect In the exemple in Figure 1 17 the IP address of the host 191 000 000 100 is used and only when data destined for this device is received by the OfficeConnect Remote is a call made to the remote site Local Site Remote Site 191 000 000 xxx 191 000 000 xxx M L u Figure 1 17 IP Bridged Network There are some issues about which you should be aware when implementing an IP bridging solution Although calls to the remote site are only generated when data is addressed to a specific IP host or hosts in our example 191 000 000 100 any data that cannot be identified as local is also passed over the link while it is open This can prevent the link from closing after the intended data has been transferred Some devices and applications for example autodiscovery programs on SNMP managers poll all devices on a subnet at regular intervals and this could lead to frequent ISDN calls if you have entered sev
46. eckdose ziehen oder die Verbindung zum Ger t unterbrechen Der Sicherheitsstandard der Anschl sse fuer dieses Ger t sind wie folgt Anschl sse bezeichnet mit VOICE und ISDN TNV Anschl sse bezeichnet mit SERIAL COAX 10BASET und WAN SHV WICHTIGE SICHERHEITSHINWEISE TNV Telecoms Network Voltage Spannung des Telekommunikationsnetzwerks ist ein Anschluss der unter normalen Umst nden Telekommunikztionssignale enth lt AV Safety Extra Low Voltage Extra Sicherheitsspannung ist ein weiterer Anschluss der unter normalen Umst nden und Fehlerkonditionen entworfen und gesichert wurde so dass die Spannung zwischen zwei erreichbaren Teilen kein gef hrliches Niveau erreicht 42 2V max oder 60 V DO An den Anschlussbuchsen der Ger te d rfen nur die daf r vorgesehenen Anschl sse verwendet werden Es sind keine von dem Benutzer zu ersetzende oder zu wartende Teile in dem Ger t vorhanden Wenn Se ein Problem mit dem OfficeGonnect Remote haben das nicht mittels der Fehleranalyse in dieser Anleitung behoben werden kann setzen Sie sich mit Ihrem Lieferanten in Verbindung Bevor der OfficeConnect Remote ausgebaut wird ist das Netzteil zu ziehen ACHTUNG gedrehte paarfache Rj 45 Datenanschluss Es ist eine abgeschinmte Rj 45 Datenanschlu buchse Sie darf nicht als Tdefonanschlu verwendet werden Verbinden Sie nur RJ 45 Datenstecker mit diesem Anschluss AVERTISSEMENT Les avertissements contiennent les inst
47. ect Remote 520s connector with 3 meters of cable V 35 3C4100010 OfficeConnect Remote 530s 304100015 OfficeConnect Remote 510u 3C409004 25 pin to 15 pin D type plug with 3 34100020 OfficeConnect Remote 520u meters of cable 0 21 304100025 OfficeConnect Remote 530u 733 000026 British Telecom socket to RJ 11 3C16740 Power adapter US converter UK only 3C16741 Power adapter UK 3C16742 Power adapter Mainland Europe 3C16743 Power adapter J apan 3C16744 Power adapter Australasia 3C16745 Power Adapter South Africa 980 000033 OfficeConnect Remote User Guide 731 000036 9 pin D type plug to 9 pin D type socket gender changer Serial Management port cable 731 000024 9 pin D type plug to RJ 45 plug with 3 meters of cable 733 000028 RJ45 to RJ45 plug with 15 meters of UTP cable ISDN cable 733 000001 RJ45 to RJ45 plug with 3 meters of UTP cable ISDN cable C GLOSSARY ALLER a fe 10Base2 An IEEE standard for using IEEE 802 3 protocol at 10 Mbps over thin Ethemet cable 1OBase5 An IEEE standard for using IEEE 802 3 protocol at 10 Mbps over thick Ethemet cable 10BaseT An IEEE standard for using IEEE 802 3 protocol at 10 Mbps over unshielded twisted pair cable the T stands for twisted pair 100BaseVG An IEEE standard for using the new IEEE 802 12 protocol at 100 Mbps over unshielded twisted pair cable of type 5 or type 3 100BaseT A proprietary standard for using IEEE 802 3 protocol a
48. ect the Serial Manager cable to the Serial Manager port marked Serial Gonnect the other end to the serial COM port on your PC workstation When you have connected a management terminal you can configure the Office Gonnect Remote to communicate with the remote site s See Quick Configuration overleaf Location of OfficeConnect Fax and Print Servers If you are connecting the OfficeGonnect Fax Server or Print Server to the OfficeConnect Remote you must configure these units to operete with local servers only If you do not do this unnecessary ISDN calls are made caused by the fax or print server polling the fax or print queue on remote servers at regular intervels between once every 30 seconds to once a minute Quick Configuration gt This section describes how you can configure the unit to bridge or route over ISDN links to suit most networking requirements using a simple forms based user interface If you want to connect to a remote site using leased line WAN links see Setting Up a WAN Link on page 1 29 If you are unsure about the networking configuration you require see Examples of Typical ISDN Networking Applications on page 1 31 for more information IMPORTANT The Quick Configuration menu option is designed to be used only when you set up the unit for the first time If you want to make any changes to the units configuration at a later stage you should use the management system menus to make the
49. ector The port can be configured to away mde connector support V36 signalling characteristics at data transfer 7 Signal Ground B rates up to 48 Kbps The WAN port connecting cable 102 Clear To Send is not supplied with the unit The following signalling 8 Data Carrier Detect DCD F characteristics should be observed when purchasing 109 or fabricating a suitable cable 11 Signal Ground B Serial Clock Transmit B AA Pin Signal name ea SCTB 114 Links 3Com end pin no pin no 34 way MRAC 14 Transmit Data B TXDB S 25 way male connector 103 2 Trensmit Data XD 103 P 15 Serial Clock Transmit A Y SCTA 114 3 Receive Data RXD 104 R 16 Receive Data B RXDB T 4 Request To Send RTS C 104 105 17 Serial Clock Receive A vV dear To Send RTS 106 D SCRA 115 6 Data Set Ready DSR 107 E 19 Serial Clock Receive B x SCRB 115 20 Data Terminal Ready DTR H 108 Manager Port Connecting Cable Terminal The manager port cable terminates with a9 pin or Com female connector at one end and a 9 pin Signal Name Pin Signal Name port end male female D type connector or 25 pin D type FEDER Links pin number male female connector The pin out tables below PDO 25 way show the pin outs for both variants 9 way male male female connector connector Terminal Shell Screen Screen 1 m 3 TD RD 3 Signal Name Pin Signal Name tend 2 RD BO 2 ae end Links number pin no oway 5 Ground Ground 7 9 way male mag female 7 RTS
50. elboume 61 3 653 9515 Country Telephone Number Belgium 71429 Brazil 55 11 546 0869 Canada 905 882 9964 Denmark 17309 Finland 113153 France 05 917959 Germany 0130 821502 Hong Kong 852 868 9111 Ireland 1 800 553117 Italy 1678 79489 Japan 81 3 3345 7251 Mexico 525 531 0591 Netherlands 06 0227788 Norway 80013376 Singapore 65 538 9368 South Africa 27 11 803 7404 Spain 900 983125 Sweden 120 795482 Taiwan 886 2 577 4352 United Arab Emirates 971 4 349049 Retuming Products for Repair D 3 Country Telephone Number UK 0800 966197 US 1 408 492 1790 These numbers are toll free Retuming Products for Repair A product sent directly to 3Com for repair must first be assigned a Retum Materials Authorization RMA number A product sent to 3Gom without an RMA number will be retumed to the sender unopened at the senders expense To obtain an RMA number call or fax Country Telephone Number Fax Number US and Canada 800 876 3266 option 2 408 764 7120 Europe 31 30 60 29900 option 5 44 1442 275822 Outside Europe 1 408 492 1790 U S and Canada 1 408 764 7290 INDEX Numerics 10Base2 1 9 connections 1 14 10BaseT connections 1 13 arossover 1 9 port 1 9 3Com Bulletin Board Service 3ComBBS D 1 3Com sales offices D 2 A ALERT LED 1 6 B bridging and routing concepts A 1 bulletin board service D 1 C clipping hubs together
51. eral IP hosts to generate autocalls to the remote site When combined with the problem described above you could find your ISDN line permanently connected To avoid this situation you need to be sure that no devices or applications exist on your local site that could make unnecessary and costly calls to your remote site You can also configure the OfficeConnect Remote units at both ends of the link to implement a Firewall and or Call Guillotine to reduce the amount of traffic permitted to pass across the link See the Software Reference guide for more information about these features Altematively you may wish to configure the OfficeConnect Remote to operate as a router to prevent this problem occurring altogether This however requires that each site consists of separate subnets See the next section for more information about IP routing Examples of Typical ISDN Networking Applications 1 35 IP Host on Another IP Network Most organizations using TCP IP protocols on their network choose to subnet remote sites or even to have them on different networks This requires that connections to remote sites are routed rather than bridged The advantage of routing over bridging is that calls to the remote site are only made when data is specifically addressed to a remote network Bridging passes any data not known to be for the local network to the remote network whether that is its destination or not Because the ISDN number can be associa
52. erified to comply with the limits of Class B computing device pursuant to Subpart J of Part 15 of the F Rules WARNING This product generates and uses radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturers instructions may cause interference to radio or tdevision reception The product has been tested and found to comply with the limits for a Gass B computing device in accordance with the specifications of Subpart J of Part 15 of FCC Rules which are designed to provide reasonable protection against such interference in a residential installation However the is no guarantee that interference will not occur in a particular installation If this equipment does cause interference to radio or television reception which can be determined by tuming the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures id Approvals B 3 Reorientate the receiving antenna Relocate the product away from the receiver Plug the unit into a different outlet so that the computer and the receiver are in different branch circuits Ensure that all product fixing screws attachment connector screws and ground wires are tightly secured If necessary consult your dealer service representative or an experienced radio television technician for additional suggestions The manufacturer is not responsible for any radi
53. ft Windows terminal emulation program Terminators Devices that are used at the ends of a linear bus network segment to reflect the signal back and prevent failure of the segment TCP IP Transmission control protocol Intemet protocol a set of communication protocols that support peer to peer connectivity functions for both local and wide area networks Thick Ethemet A cabling system for Ethemet connections that uses a heavyweight coaxial cable Suitable for large networks Thin Ethemet A cabling system for Ethemet connections that uses a lightweight coaxial cable Suitable for small networks Ticks A measurement of the time taken to pass information through a routed network Token Ring A network transport technology in which an electronic token that allows access to the network is passed around stations in the ring Topology The way that a network is physically laid out Transport layer The fourth layer of the OS network layer model This is responsible for error checking and correction and some message flow control MAN Vide area network a network that covers a wide area and requires spedal communication devices bridges and or routers to make connection possible WANs make connections over long distances and need telephone satellite or maowar equipment to allow connections to be made Workstation Another name for a computer or device such as a printer or modem that is connected to a network D TECHNICAL SU
54. ge is limited set up ISDN Timebands or set the Maximum Call Duration parameter See the Software Reference guide for more information on these features Setting Up a WAN Link If you are using the OfficeConnect Remote to connect to a remote site over a leased line link the initial setup is very simple Before you power on the unit connect an appropriate WAN cable to the WAN port on the rear of the unit If you have already powered on the unit switch it off and connect the cable For more information about suitable cables see Appendix B Power on the unit The OfficeConnect Remote automatically configures the WAN port to the appropriate line speed Refer to the Software Reference guide and edit the WAN port s configuration as follows a Fromthe main menu enter CO PO b Highlight the WAN port c Enter ED to display the Edit WAN Port screen shown in Figure 1 15 Setting Up a WAN Link 1 31 d If you are routing edit the Port IP address to set Terminal WINDOWS TRM Le it to UNNUMBERED orto a valid IP address for the File Edit Settings Phone Transfers Help WAN link EDIT FAST PORT ETSI ISDN Down Port Nunber cuair Backup Bridge MAC 688888888884 H 7 Port Name GAST Link 1 See AppendixA for more information about Renote Bridge Nane N Port IP Address 18 8 8 1 using numbered and unnumbered links Port IP Mask 255_0 8 8 Demand Threshold 88 Port Hop Count 1 j H j Demand Period 5 If you
55. he metric known as tids In a LAN only environment this is the hop count plus one eg three hops or four ticks For an intemetwork connected via a WAN or ISDN links the tick count is factored on the speed of the WAN link VE saw above the common network numbering scheme employed for a bridged network By employing routing LAN A LAN B and LAN C become three separate networks on a network The network numbering must reflect that situation In a Novell IPX environment we could allocate IPX network numbers 00000111 to LAN A 00000222 to LAN B and 00000333 to LAN C Having configured Routing IPandIPX All the ports of the OfficeConnect Remote to accept this protocol routing will now occur between the remote network servers and workstations but addressed by different network numbers It should be noted that NetWare 3 X and later uses the concept of intemal IPX addresses which is somewhat similar to network addressing The intemal address refers to the intemal network within that server allowing intemal processes to communicate These numbers must be unique for all servers right across the network Although network servers may appeared wired correctly and in other respects seem to be working correctly duplicated intemal IPX addresses will not allow correct operation NetWere has a hop count limitation imposed by the RIP On an IPX network a data packet can cross a maximum of fifteen routers before being discarded IP Addresses T
56. hey can be stepped on and cause damage to the unit Keep the unit away from radiators and heat sources Allow 25mm 1 inch around the unit to provide adequate air circulation Install the unit in a dean area that is free from dust or extreme temperatures The unit has been designed to be a free standing unit or stacked with other OfficeGonnect units Do not place anything else on top of the unit s case Allow a clearance gap of at least a 150 mm fromthe rear panel of the unit to allow for cable access This product ostensibly complies with the electro magnetic compatibility EMC requirements of EN 55022 Class A and EN 50082 susceptibility However to fully comply with Class B of EN55022 the following prerequisites should be observed a the WAN port must be attached to a screened digital cable a the ISDN cable must be used in conjunction with a three tum ferrite This unit contains a lithium battery which is attached to a microchip on the printed circuit board The defective battery must be disposed of safely in line with the manufacturers instructions Interconnecting directly or by way of other apparatus to ports complying with SAV requirements may produce hazardous conditions on the network Advice should be sought froma competent engineer before such a connection is made 1 GETTING STARTED oot tee DR Introduction Welcome to the word of inter networking with 3Com This chapter contain
57. idging and Routing Concepts A3 You can also configure a number of other features to improve the performance and operation of the OfficeConnect Remote These indude sophisticated frame filtering techniques so that only certain types of frame or those associated with particular work groups are passed between specific segments Bridging Between Remote Sites The OfficeConnect Remote is able to send frames between LANs that may be separated by considerable physical distances It achieves this by making use of Wide Area Network WAN links WANs can be established by using either digital leased lines or ISDN and are usually operated by telephone companies PTTS or other service providers Figure A 1 shows two LAN segments A and B which are connected by a pair of OfficeConnect Remote units 1 and 2 The type of link between the two depends on the WAN services available at each of the remote bridge locations and the price the network administrator is willing to pay for those services Bridge 2 Figure A 1 Simple Remote Bridging The OfficeConnect Remote uses FastConnect its own protocol to ensure the most efficient connection with other OfficeConnect Remote units However if you are connecting to a different type of bridge router the standard PPP communication
58. ink uses 191 000 300 191 000 300 102 Figure A6 Bample of a Numbered Link By default the WAN port and ISDN port have an IP address of 10 0 0 1 This is set to alow remote Telnet connections to the unit to enable configuration but must be changed when configuring the unit to allow correct operation If you use the Quick Configuration QC option to configure the unit to operate over ISDN the Port IP Address is set to unnumbered In most instances you should use unnumbered links This is easier to configure and does not use network addresses which may be in short supply B TECHNICAL INFORMATION oe tee fe Voice Connector Interface ification Spec cations Provides interface for analog telephony equipment via 11 connector socket Adaptors may be LAN Connector Interfaces required for some telephone equipment m 10Base2 via a coaxial connector connections m 10BeseT via an R45 connector socket for UTR Management Connector Interface 9 way D type connector for use with a VT100 compliant terminal or PC Only one LAN connection can be used at atime WAN Connector Interface 25 way D type female connector configured to support one of m Local and remote terminal management m TCP IP Telnet menu driven management interface for remote management m V11 X21 for speeds up to 2 048 Mbps m Software upgrades enhancements and m V28 V 24 RS232
59. is designed and protected so that under normal and single fault conditions the voltage between any two accessible parts does not exceed a safe value 422 V peak or 60 V DC Only connect apparatus complying with the relevant interface requirements to the ports on this unit There are no user replaceable fuses or user serviceable parts inside the unit If you have a physical problem with the unit that cannot be solved with problem solving actions in this guide contact your supplier Disconnect the power adapter before moving the unit WARNING Twisted Pair RJ 45 data port Thisis a shidded RJ 45 data socket It cannot be used as a telephone socket Only connect RJ 45 data connectors to this socket ACHTUNG Die Wamungen enthalten Anweisungen die Se zur agenen Sicherheit zu befolgen haben Lesen Se bitte die folgenden Informationen sorgf ltig durch bevor Sie den OfficeGonnect Remote einbauen Auf besondere Vorsicht mu w hrend des Ein und Ausbaus des OfficeConnect Remotes geachtet werden Stapeln Sie den OfficeConnect Remote nur mit anderen OfficeConnect Einheiten zusammen Verwenden Sie nur das mit dem OfficeConnect Remote mitgelieferte Netzteil um die intemationdlen Sicherheitsstandards zu erf llen Die Netzsteckdose mu sich in unmittelbarer N he des OfficeConnect Remotes befinden und frei zug nglich sein Sie k nnen den OfficeConnect Remote nur spannungsfrei schalten indem Sie das Steckemetzteil aus der Netzst
60. istently see a continuous ISDN loading of 100 and you require faster throughput then you might consider the following You could configure the unit to filter some of the data See the Software Reference guide for more information An additional ISDN or WAN link is possibly required to cope with the amount of data you need to transfer Rear Panel Introduction 1 9 SERIAL m ooooo pesa Lo ooo f Figure 1 2 OfficeConnect Remote Rear Panel Features POWER Only use the power adapter supplied with the OfficeConnect Remote to connect to the mains power supply Do not use any other adapter with this unit If the plug on the power adapter does not match the mains inlet socket contact your reseller for further advice RESET For Technical Support use only g a a 190000000000000 KZ 1000000000000 10BASET ISDN VOICE SERIAL The Serial Manager port enables a management PC or terminal to be connected to the OfficeConnect Remote using the 9 pin V24 Serial Manager cable supplied with the unit The port provides VT100 terminal emulation running at 9600 bps Refer to Appendix B for more information about cables You also need a proprietary communications software package such as Windows Terminal to communicate with the OfficeCo
61. ith the system administrator of the remote network for the correct values for these fields Name of your Internet Provider or remote site Type the name of your Intemet service provider or of the remote unit that connects to the remote IP network ISDN Number of the remote unit Type the ISDN number of the remote unit that connects to the remote IP network Call Type Set the Call Type for each ISDN number Use 64k Unrestricted for Euro ISDN lines Use 56k 110 or 56k_restricted in the USA depending on the requirements of your ISDN service provider IP Address of this unit s LAN Type the IP address of this unit This the address you entered on the Name screen IP Mask of this unit s LAN Type the IP subnet mask you entered for this unit on the Name screen See Appendix A for more information about subnet masks IP Address of this end of the ISDN link By default this field is set to UNNUMBERED which allows unnumbered links to be used This options is suitable for most network configurations See Appendix A for more information about numbered and unnumbered links If you want to use numbered links you must enter an IP address for this port that is on a different network or subnetwork than the unit s IP address If you are routing IPX using PPP you must use numbered links IP Adidress at the other end of the ISDN link By default this field is set to UNNUMBERED indicating unnumbered links are being used If you are using numbered li
62. light pulses sent over thin glass fibres which is able to deliver data at speed up to several gigabits per second File server A computer running a special operating system that allows workstations to access files Filter A configuration that removes types of data frames based on user entered parameters Firewall A method of preventing unauthorized access to a network or a host on a network A firewall is usually implemented within a router s software Frame The method by which a data packet is constructed to be sent across a network Usually assembled with header and footer information Gateway Another name for a router on a network HDLC High level Data Link Control OS s bit orientated protocol Hop count The number of routing nodes between a source and destination device on a LAN or WAN Host A device or computer on an IP network to which you can connect Hub A cabling centre in a star topology that either amplifies a signal and transmits it active hub or simply passes the signal along passive hub Hyperterminal The terminal emulation program provided with Microsoft Windows 95 IEEE The Institute of Hectronic and Hectrical Engineers IPX Intemetwork Packet Exchange the default data packet protocol for Novell s NetWare operating system ISDN Integrated Services Digital Network A multi channel digital end to end telecommunications network that provides a virtually error free transmission of data ISO I
63. missing then contact the 3Com dealer from whom the equipment was purchased 1 x OfficeConnect Remote unit 1 x power adapter fitted with an appropriate plug for your national power supply 1x15 meter R 45 to R45 male plug ISDN 2 connecting cable 1x 15 meter DB9 to DB9 serial manager port cable 1 x British Telecom to Rj 11 convertor UK models of OfficeConnect Remote 520 and 530 only 1 x OfficeGonnect Remote User Guide 1 x OfficeConnect Remote Software Reference guide 1 x Warranty Registration Card It is important that you save the unit s box and protective packing material in case you need to store or transport it in the future Registering Ownership Of Your OfficeConnect Remote A warranty registration card is endosed in the box with your OfficeConnect Remote Please take a few moments before commencing the installation to fill in the card and post it to us Introduction 1 5 Pre installation Requirements p Before you install your OfficeConnect Remote you will need the following A suitable cable for connection to your LAN or workstation if only a single workstation is attached to this unit Although the OfficeConnect Remote has two LAN connections 10Base2 and 10BaseT only one port can be used at a time A standard ISDN line wall socket to connect the ISDN cable to the ISDN port of the OfficeConnect Remote If a suitably sited wall socket is not already available then contact your telecommunic
64. n When you do this the unit automatically makes a short call to the remote unit to interrogate the remote network for information about its servers When it has obtained the information it needs the call is automatically disconnected The unit then updates the autocall table so that when data is destined for a remote server the unit automatically dials the correct ISDN number and connects to the remote network Enter SAVE at the command prompt to permanently store this configuration in the unit s memory Connecting to an IP Host on the Same IP Network To connect to an IP host on the same network using FastConnect enter IPB at the command prompt on the Quick Configuration screen to display the screen illustrated in Figure 1 2 Terminal WINDOWS TRM bd i File Edit Settings Phone Transfers Help CONNECT TO THE SAME IP NETWORK ETSI ISDN ISDN number of the remote unit you want to call J Call Type 64K Unrestricted IP Address of the remote host DEFAULT W Help G Main menu FE Submit L Prey menu Figure 1 12 Connecting To An IP Host On The Same Network Complete the fields on this screen as follows Remote ISDN Number Type the ISDN number of the remote unit that connects to the IP network Call Type Set the Call Type for each ISDN number Use 64k Unrestricted for Euro ISDN lines Use 56k 110 or 56k_restridted in the USA depending on the requirements of your ISDN service pro
65. n the overall flow of data across the network Much has been made of broadcast storms in connection with bridged networks where the broadcast signals from bridges propagate to fill all of the wide area bandwidth and bring the network down Broadcast storms cannot be attributed to installation of bridges or routers but by poor protocol implementation and network design However the deployment of routers can effectively firewall one logical network from another Optimum Use of Resource Bridged networks use Spanning Tree Protocol STP to provide network resilience by retaining redundant links on stand by in case the primary link fails This means that you are not making maximum use of available resources Routing protocols make each node aware of the primary and altemate routes available ensuring that resources particularly WAN links are not wasted Routers have been designed to provide the optimum route through the network from the workstation through to the destination resource with which the user wishes to communicate In a very large network there could be multiple paths available and these could change as dedicated links go in or out of service These changes in network topology are handled by routing protocols However when using the ISDN the source network can dial direct to the destination network and establish a point to point bridged or routed connection Generelly when using this type of ISDN dial up link routing does
66. nks type the IP address of the remote ISDN port on the unit to which you want to connect It must be on the same network or subnetwork as the local ISDN port IP Mask of the ISDN Link If you are using unnumbered links leave this field set to 0 0 0 0 If you are using numbered links type a subnet mask suitable use with the IP addresses you have selected for the ISDN ports at both ends of the link See Appendix A for more information about subnet mesks IP Address of the Remote Host Type the IP address of a host on the remote network to which you want to connect IP Mask of the remote host s network Type an IP subnet mask to filter connections to inappropriate hosts See Appendix A for more information about subnet masks Make of remote router This option sets PPP parameters needed to connect to the remote unit in its default configuration If the remote unit s PPP configuration has been altered you will need to amend the PPP parameters on this unit to reflect the changes Refer to the Software Reference guide for more information Toggle this field to the type of remote router to which you are connecting The PPP options for the default settings at the remote router are then automatically configured when you press CTRL HE to exit this screen The options are Default Use this option if you are connecting to another OfficeGonnect Remote Also use this option if the remote unit is none of the following and amend the PPP parame
67. nnect Remote COAX 10Base2 Coaxial Port The coaxial LAN port allows a 10Base2 Ethemet segment to be connected directly to the OfficeConnect Remote If the unit is to be installed at the end of a cable run then a 50 Ohm terminator must be fitted to the 10Base2 cable connector This port can be used to connect to OfficeConnect hubs MDI MDIX Switch Affects the operation of the 10BaseT LAN port If you are connecting to a hub leave the switch in the In position If you are connecting to a single PG set the switch to the Out position to implement the 10BaseT crossover that is required VAN OfficeConnect Remote 520 and 530 only This port is used to provide connection to a WAN via a private leased line The port terminates with a 25 way D type female connector This port supports any of the CATT data transmission standards x21 V11 V24 V28 R amp 232 and V 35 V 36 at data transfer rates up to 2 Mbps Provided that connection cables that follow these standards are used the OfficeConnect Remote automatically detects the type of interface that the port is required to support and configure it accordingly Refer to Appendix B for information about the WAN interface cables required Suitable cables are available from your 3Com reseller as spare parts refer to Appendix B for required item part number 10BASET This RJ 45 port is to the left of the ISDN socket when looking at the rear of the unit and is used to provide a connection to a
68. nnecting to an IP host on the same IP network Connecting to an IP host on another IP network Connecting to the Intemet or a PPP router You may need to combine two or more of these applications to provide full connectivity to your network This is easily done by repeating the Quick Configuration option as many times as is needed access information stored on servers in other locations If you are using ISDN to connect to the remote site you can configure the OfficeGonnect Remote to automatically call and connect to remote Novell servers when connection is required During configuration once you have entered the ISDN number for the remote site the OfficeGonnect Remote makes a call to the remote site and autodiscovers the Novell servers on that network It is then able to autocall the remote site whenever a connection to one of the remote servers is requested To the user at the local site it will appear as though the server is on the same network When no data is being passed between the workstation and server the OfficeConnect Remote doses the ISDN connection and the units at each end of the link poof the Novell IPX protocol so that both the workstation and server believe the connection is still valid As soon as the unit identifies that data needs to be passed to the server the ISDN connection is re established without the user being awere of ever being Examples of Typical ISDN Networking Applications 1 33 disconnected In this
69. ntemational Standards Organization Refer to Open Systems Interconnection Kbps A measurement of data transmission speed in kilo bits per second Keep alives A message sent by one network device to inform another network device that the virtual Circuit between them is still active LAN Local area network a network that covers a group of local workstations and peripherals that require to share information Leam A bridge leams addresses received at any of its interfaces and adds them to its filter address table MAC Medium access control a protocol for determining which device has access to the network at any one time Mibps A measurement of data transmission speed in megabits per second CHAPTER C GLOSSARY MAN Metropolitan area network a network that covers a city MIB Management information base NETBIOS Network Basic Input Output System a standard for supporting network communications that is independent of the underlying network transport type NetWare Novell s Network Operating System NOS line Network A method of connecting computers and other devices together with cabling so that they can communicate with each other NIC Network interface card an expansion card that enables a PC to communicate on a network Network layer The third layer of the OS reference model This layer is responsible for controlling message traffic NFS A network file system developed by Sun Microsystems for shared files over
70. numbered links to be used This options is suitable for most network configurations See Appendix A for more information about numbered and unnumbered links If you want to use numbered links you must enter an IP address for this port that is on a different network or subnetwork than the unit s IP address IP Address at the other end of the ISDN link By default this fidd is set to 0 0 0 0 indicating unnumbered links are being used If you are using numbered links type the IP address of the remote ISDN port on the unit to which you went to connect It must be on the same network or subnetwork as the local ISDN port IP Mask of the ISDN Link If you are using unnumbered links leave this field set to 0 0 0 0 If you are using numbered links type a subnet mask suitable use with the IP addresses you have selected for the ISDN ports at both ends of the link See Appendix A for more information about subnet masks IP Address of the Remote Host Type the IP address of remote host to which you want to connect Remote IP Mask Type an IP subnet mask to match the address type being used See Appendix A for more information about subnet masks Press CTRL HE to submit this information An entry is made in the autocall table so if any data destined to the remote host an automatic call is made and a connection made to the remote IP network Enter SAVE at the command prompt to permanently store this configuration in the units memory Connec
71. o or television interference caused by unauthorized modifications to the product It is the responsibility of the user to correct such interference You must use shielded interface cables and a ferrite in order to maintain compliance with the limits for a dass B device CAUTION Changes or modifications not expresdy approved by the party responsible for compliance could void the users authority to operate the product ge i 965 g 2 11 Ib or coaxia por 18 VA 61 BThU hr power requirement 0 40 C 32 105 F operating temperature a 0 90 A non condensing Oo humidity Interface Cable Characteristics B 5 RS Re SE a TT thee dient end pin Pi Si Interface Cable Characteristics ie 3Comend gnal name BER Panes 15 way male WAN Port Connecting Cable V 11 X 21 25 way male D type connector Support 2 Transmit Data A TXDA 2 The WAN port terminates with a 25 way D type 3 Receive Data RXDA 4 female connector The port can be configured to 7 Signal Ground Receive 8 support V11 signalling characteristics at data transfer Data rates up to 2 048 Mbps The WAN port connecting 12 Signa Gound cable is not supplied with the unit The following i signalling characteristics should be observed when B Indicate B INDB 2 purchasing or fabricating a suitable cable 14 Transmit Data B TXDB 9 15 Indicate A INDA 5 16 Receive Data B RXDB 11 17 dock A AKA 6 19 dock B AKB 13 23 Control B
72. of data at atime Baud A unit of signalling speed equal to the number of signalling events in one second Bit Ether of the digits O or 1 when used in the binary numeration system Eight bits equals a single byte Bridge A device that links two or more local or remote area networks together A bridge may be used to extend the network or to connect two different network transport technologies together Broadband A communications technique in which network cabling is used to carry multiple streams of data simultaneously Broadcast Storm A rare event in which broadcast frames are propagated endlessly through the network because poorly configured bridge and router connections Bus A single segment through which devices are connected An Ethemet LAN is based on a bus network which connects all communicating workstations with a common cable Byte A string that consists of eight data bits treated as aunit Call Guillotine A feature that disconnects a call after a certain period of time irrespective of whether data is being passed across the link or not COTT Comit Consultatif International T l phonique et Tel amp graphique now renamed ITU Intemational Telecommunication Union CHAP Challenge Handshake Authentication Protocol Part of the PPP protocol to ensure authentication of the connection between two devices Gas Type of IP address IP addresses fall into three main classes A Band C dient A user whom is making use
73. ons Additional Safety Information 3 If any of the following conditions occur isolate the electricity supply and refer to your 3Com reseller a If the case or cover is not correctly fitted a If the case is damaged a If the unit begins to make an odd noise smell or smoke If the unit shows signs of a distinct change in performance Never install telephone wires during a lightening storm or install telephone connection sockets in wet locations unless the socket is specifically designed for wet locations Do not touch uninstalled telephone wires or termin ls unless the telephone line has been disconnected at the network interface Always exercise caution when installing or modifying telephone lines Do not use a telephone which is connected to the unit to report a gas leak in the vicinity of the leak Do not spill food or liquids on the unit If the unit gets wet isolate the electrical supply and contact your 3Com reseller Do not push any objects into the openings of the unit Doing so can cause fire or electric shock by shorting out intemal components Avoid using a telephone which is connected to the unit other than a cordless type during an electrical storm There may be a remote risk of electric shock from lightning Equipment connected to the Voice port must be located in the same building as the unit Be sure nothing rests on the unit s system cables and that the cables are not located where t
74. ontrols the formatting and translation of data Protocol A set of rules and procedures that govem the exchange of data between two communicating systems PSTN Public switched telephone network Quick Configuration A set of menu driven forms in the management system that allow you to configure the unit for most types of ISDN connection REN Ringer equivalence number RIP Routing information protocol Router A protocol transparent device that links networks A router can be used to separate unwanted traffic on either side of the bridge reduce the traffic or to provide security from unauthorized users SAP Source address protocol Segment A section of an Ethemet network typically connected by repeater or a bridge to another segment SPX Sequenced Packet Exchange Novell s guaranteed delivery version of IPX Session A logical connection between two communicating systems that allows for the transfer of data Session layer The fifth layer of the OS network layer model This layer is responsible for the security and administrative tasks of communicating CHAPTER C GLOSSARY SNMP Simple network management protocol a software program to allow the remote management of bridge and routing devices Static Route A route you have entered and made permanent rather than a route that the unit has leamed by connecting to other routers STP Spanning tree protocol a protocol which prevents network loops Terminal The Microso
75. or general enquiries refdesk is intemic net enquiries not handled by the services above Europe RIPE Attention RPE NCC Kruislaan 409 NL 1098 SJ Amsterdam The Netherlands Telephone 31 20 592 5065 Fax 31 20 592 5090 email ncc ipenet Asia Padfic Network Information Center APNIC DOM Attention Asia Pacific Network Information Center APNIG DOM C o Computer Center University of Tokyo 2 11 16 Yahoi Bunkyo ku Tokyo 113 Japan Admin Contact Nakayama Masaya MN89 Local Site Remote Site Telephone 81 3 3812 211 ext2720 191 000 100 xxx 191 000 200 xxx email nakayama nic ad jp Technical Gontact Conrad David DC296 Telephone 81 3 3580 3781 or 3580 191 000 300 101 Fax 81 3 3580 3782 email davidc apnic net A Numbered and Unnumbered Links When routing and using the OfficeConnect Remote s FastConnect protocol over ISDN or serial WAN links as opposed to PPP you have the option of using numbered or unnumbered links A numbered link requires a valid IP address to be configured for both ports connected to each end of the link The IP address used must be for a different subnet or network than that used by either LAN at each end of the link An example is shown in Figure A 6 In this example the Local Site uses the network address 191 000 100 0 on its LAN The remote site uses the network address 191 000 200 on its LAN and the l
76. ot attempt to configure the unit to use PPP without this information Setting the Unit Name Before you configure the unit to connect to any other network you must first give the unit a name Enter NA at the command prompt on the Quick Configuration screen to display the screen illustrated in Figure 1 10 The fields on this screen are Unit Name Type in a suitable name for this unit The name can be up to 12 characters long must contain no spaces and should where possible give an indication of the geographical location of the unit or the name of the users Manager LAN IP Address Type the IP address for this unit It must be a unique IP address on your network Manager LAN IP Mask Enter an appropriate IP subnet mask See Subnet Masking in Appendix A for more information about subnet masks Network Type Toggle the network type to match the ISDN service provided by your ISDN service provider Terminal WINDOWS TRM El File Edit Settings Phone Transfers Help UNIT PARAHETERS ETSI ISDN Unit Name Manchester Unit LAN IP address 191 1 1 23 Unit LAN IP mask 255 8 8 8 Network Type Europe including UK ETSI For North American use only SPID 1 Directory Number 1 SPID 2 Directory Number 2 w Help G Main menu E Submit L Prev menu Figure 1 10 Setting The Unit Name SPID 1 and 2 Service Profile IDs SPID are used by some ISDN service providers in the USA If SPID
77. puter which has software which enables it to act as an IP gateway These devices if configured correctly provide the IP numbering address translation between the two networks Subnet Masking Subnet Masking is a mechanism which can be enabled in computer and communications equipment which tells the equipment and the network which parts of the IP address are to be used as the Network identifier and which are the Host identifier A subnet mask consists of a similar field structure to that of the IP address 123 123 123 123 For example 255 255 0 0 This means that the first two three digit bytes of the IP address the fields masked by 255 255 are to be recognized and used as the Network address and the last two bytes those set to 0 0 are to be used to identify the Host address An altemative way of expressing a subnet mask is a single number indicating how many bits of the IP address are to be used for the network address For example 255 255 0 0 can be expressed as 16 while 255 255 255 192 can be expressed as 24 The OfficeConnect Remote can be configured to use subnet masking to enable ISDN Autocalls to be made on groups of IP addresses or on specific IP addresses Routing IPand IPX AB Nonmmally a subnet mask would be set so that any IP address in a range of hosts on a destination LAN which are detected on the units locally connected LAN port causes an ISDN Autocall to be made out to that destination This i
78. r routers connecting over slower speed terrestrial and satellite links BRIDGING AND ROUTING In the following sections we describe the concepts behind bridging and routing and discuss the different ways in which LANs can be configured and operated to optimize performance and minimize disruption of traffic on each individual LAN Bridging and Routing Concepts A bridge connects one or more LANs together It examines each data frame received at a LAN port and forwards any frames that it assumes are for a destination device not connected to that LAN port The bridge is able to do this by leaming which devices are connected to each LAN port A router leams much more about the networks connected to it and is able to be much more selective about the data it passes on to other networks and to which networks it transmits By default routers reject or filter data unless it matches predefined attributes for example specific protocols or destination network addresses In large interconnected networks a router sdectsthe best route for data to travel A2 BRIDGING AND ROUTING Guidelines For Choosing Bridging or Routing How Bridges Learn The list below outlines some of the reasons why you might choose to configure the OfficeConnect Remote asa bridge or a router Read through the rest of this appendix for more explanation and to help dedde which of the above conditions apply to your network A bridge is simpler to configure but a router can
79. ructions que vous devez suivre pour votre s curit personndlle Suivre toutes les instructions avec soin Veuillez lire fond l information suivante avant d installer le moyeu Le soin exceptionnel doit tre pris pendant l installation et l enl vement du moyeu Seulement entasser le moyeu avec les autres moyeux OfficeConnects Seulement utiliser la pi ce de raccordement d alimentation qui est foumie avec le moyeu pour assurer la conformit avec les normes de s curit internationales C est essentiel que le sode de prise de courant du r seau soit localis proche du moyeu et soit accessible Vous pouvez seulement enlever l alimentation au moyeu en d branchant la pi ce de raccordement d alimentation de l unit ou du socle de prise de courant Les normes de s curit des ports d interconnexion sur cet quipement sont les suivants Les ports marqu s par les etiquettes VOICE et ISDN TNV Les ports marqu s par les etiquettes SERIAL COAX 10BASET et WAN SAV L INFORMATION DE S CURIT IMPORTANTE TNV Tdecoms Network Voltage tension r seau de t l communications est un dircuit qui dans des conditions d op rations normales transfert les signeaux t coms AV Safety Extra Low Voltage tension de s curit extra r duite est un dircuit secondaire d sign et prot g qui dans des conditions normales et de fautes uniques assure que la tension entre deux l ments accessibles n acced ra pas un ni
80. s protocol is required to establish the link You can configure outgoing calls to use either FastGonnect or PPP as required The ISDN port on the OfficeConnect Remote autosenses the protocol being used on incoming calls and switches to the protocol necessary for that connection If you are using ISDN to connect to different networks the two Bchannds can be used independently to connect to different networks at the same time Building a Larger Network Large networks of interconnected LANs can be established by using multiple bridges as illustrated in Figure A 2 The bridges build up their address tables If the destination unit is not registered as being accessed via the bridge s LAN interface the frame will not be placed on LAN A Therefore frames passing between LAN B and LANs C or D will not impact the overall performance ofthe LAN Bridging and Routing Concepts A5 Multiple Paths Between Bridged LANs Mth only a single physical path between LANs the network is susceptible to link and bridge failures In the event of a failure the connection between any of the LANs upstream or downstream of the point of failure will be broken more resilient network of interconnected LANs can be established by providing Bridge 3 fi ar sun more than one link between any two of the LANs
81. s achieved by the addition of a xx Number at the end of the configured address For example 9341234123 123 32 The 32 appended to the IP nunber indicates that all four of the bytes are used and must have valid entries A 24 mas for example 193 123 123 0 24 means that only the first three bytes are to be recognized and used and the last byte can be ignored In this case any IP address appearing on the locally connected LAN in the range 193 123 123 0 to 193 123 123 255 will cause an autocall to be made to the destination network who s name is associated with that number in the ISDN Autocall table The name is then looked up in the ISDN Numbers table and a call made to the ISDN number which has been assigned to that name Obtaining an IP Address If you want to use a unique IP addressing system on your network so you can connect to the Internet there are three organizations responsible for allocating network addresses These details are correct at the time of printing but may change USA InterNIG Network Solutions Attention InterNIC Registration Services 505 Huntmar park Drive Hemdon VA 22070 Telephone 1 800 444 4345 Toll Free 1 619 455 4600 1 703 742 4777 You can also send e mail to these addresses hostmaster rs intemic net host domain network changes and updates action s intemic net computer operations mailserv rs intemic net automatic mail service info intemic net automatic mail service f
82. s all the information you need to install and configure the OfficeGonnect Remote to make it operational You can carry out more sophisticeted configuration using the information in the Software Reference guide In the modem business environment sharing information is crucial Until now only large businesses could afford the high speed connections between offices to gain the networking advantage The OfficeConnect Remote changes this and provides high speed low cost inter networking for small offices and home users The OfficeGonnect Remote is ideal for linking together remote offices or workgroups It is compact and attractively designed for desktop use and is part of the OfficeGonnect range which neatly stack together with dips to provide a host of other facilities for example Ethemet hub print sharing and network fax OfficeConnect Remote Features The OfficeGonnect Remote is designed to connect a LAN Local Area Network at one location with a number of other LANs at remote locations The LAN could comprise any number of PCs servers or other computing equipment which in an office or small business environment are typically linked together using a centrally located OfficeConnect hub In order to interconnect the hubs in different locations the OfficeConnect Remote unit transmits information over a WAN Wide Area Network service provided by telephone canier organizations The most modem and efficient of these WAN services in
83. se changes For more information see the Software Reference guide Starting Quick Configuration 1 Using a VT100 compliant terminal emulator setup the temina emulation to VT100 with communications parameters set as follows select the GOM port to be Quick Configuration 1 19 used for data transmission 9600 bits s 8 data bits 1 stop bit no parity with flow control set to none Banmple Using Windows 3 1 Terminal Application Start the Windows Terminal application Using a mouse click on Settings in the status bar to reveal the menu From the menu a Sdect the Terminal Emulation dialog box confinn that DEC VT 100 ANS is selected b Sadet the Communications dialog box check the communications parameters are set as above c Select the Terminal Preferences dialog box confirm that all check boxes have been cleared Should the cursor disappear during configuration confirm that the Cursor Blink checkbox has been Checked i e shows a cross in it Should the keyboard arrow keys fail to move the cursor during configuration confirm that the Use Function Arrow and Cri Keys for Windows checkbox has not been checked d Now save this configuration as a Windows terminal emulator file for future use 1 20 CHAPTER 1 GETTING STARTED If you are using Windows 95 usethe Hyperterminal application and configure it in the same way as described above Terminal WINDOWS TRM El File Edit
84. sing the commands several times you can configure the unit to automatically connect to a combination of the above networks or to several different networks of the same type For example if you need to connect to an IPX site an IP host on a different network and to the Internet using an ISDN connection to your Intemet service provider you would do the following Use the NO command to configure the connection to the Novell server at the remote site Use the IPR command to configure the connection to the remote IP host Use the IN command to configure the connection to your Intemet service provider s router You cannot configure the unit to bean IP bridge and IP router at the same time Quick Configuration 1 21 The OfficeConnect Remote talks to other OfficeConnect Remote units using its own very efficient FastGonnect protocol over the ISDN or WAN port connections If you need to communicate with another manufacturer s equipment then you need to configure the OfficeGonnect Remote to use the PPP protocol using the Internet option See later in this section for more information You can further configure the PPP parameters using the management system See the Software Reference guide for more information Before configuring the unit to use PPP you should check with your Internet service provider or with the system administrator of the remote site to find out which PPP parameters should be set and what their values should be Do n
85. t 100 Mbps over unshielded twisted pair cable IEEE standards approval pending 802 3 An IEEE standard for the physical layer that specifies a CSMA CD protocol This is the standard protocol used for Ethemet Refer to CSMA CD Address The unique code assigned to each device or workstation connected to the LAN Age The process of removing an address from the units filtering database after the device has not transmitted for a given period of time ANSI American National Standards Institute Application layer Layer seven the uppermost part of the OSI network layer model This layer contains the user and application programs ASAI American Standard Code for Information Interchange a standard that defines the values that are used for letters numbers and symbols Attenuation The progressive degradation of a signal as it travels through a cable AU Attachment user interface the interface between the unit and the data terminal equipment usually in the form of a connecting cable CHAPTER C GLOSSARY B Channel A digital data communications channel running at 64 Kbps The basic rate ISDN 2 service caries two B channels plus one control D channel Refer to ISDN and D Channel Backbone A network cabling segment that interconnects a group of network segments or systems Bandwidth The capacity of data communications system or channel Baseband A communication technique in which network cable is used to carry a single stream
86. te The type of information the router uses to make these assessments is protocol dependent and some communications protocols may employ a range of routing algorithms and accompanying routing protocols In the case of the TCP IP protocol suite the OfficeGonnect Remote utilizes the Routing Information Protocol RIP RIP is also known as a distance vector protocol Different protocols use differing network characteristics or metrics when making routing decisions The metric employed by RIP is a Hop Count A hop count is defined by the number of routing nodes there are between the source and destination units In our example there are two hops between LANI and LAN 2 going via Routers A and B If traffic was directed via Routers A D and then B this would be three hops The algorithm will automatically select to forward the data packet via Router A as this route contains the least number of hop counts which makes it the preferred direct route Every thirty seconds each IP router will advertise via RIP datagrams to all other routers on the intemetwork how many hops it takes to reach all connected logical networks based on the routers network position and the state of its physical links In an ISDN environment making ISDN calls every thirty seconds to pass on and receive RIP updates would be costly When initially setting up the network the OfficeGonnect Remote is manually connected over the ISDN for a three minute period in order
87. ted with a remote network rather than just a specific IP host any data for the remote network can generate an autocall and be routed over the OfficeConnect Remote If you need to connect to IP hosts on several networks you will need to use routing to be able to communicate with the different hosts The example shown in Figure 1 18 shows the Local Site connected to two Remote sites over ISDN All sites are connected using OfficeConnect Remote units Remote Site 191 000 102 xxx Local Site 191 000 101 xxx Ze l la a u ISDN _ D j aa SR a Remote Site L N 191 000 103 xxx Figure 1 18 IP routed network Internet or PPP Router Some small businesses need high speed connections into the Internet or need to connect to large global networks used by larger organizations When communicating with another OfficeConnect Remote the unit uses FastConnett its own proprietary high speed protocol However in order to connect with other routers it needs to be configured to use the slower PPP protocol PPP is used by many other routers Increasingly Intemet service providers are offering access to the Intemet over ISDN via an ISDN router PPP routing over ISDN allows a simple
88. ters accordingly a 3Com 3Com NETBuilder router m Cisco Cisco router a Ascend Ascend router Spider Spider Shiva router If you are connecting to a Spider Shiva router you need also to edit the ISDN ports configuration and set the PAP fiad in the LCP Configuration screen to Incoming See the Software Reference guide for details PAP Password to login to Remote Site By default this is set to UNUSED If you need to use a PAP password enter the password provided by your Internet service provider or the system administrator responsible for the remote router This password is submitted to the remote unit for it to verify The password is case sensitive PAP Password for others to login to you By default this is set to UNUSED If you need to use a PAP password enter the password provided by your Internet service provider or the system administrator responsible for the remote router Your unit verifies that the remote unit is valid by comparing its submitted PAP password with the entry in this field The password is case sensitive Quick Configuration 1 29 CHAP Password to login to Remote Site By default this is set to UNUSED If you need to use a CHAP password enter the password provided by your Internet service provider or the system administrator responsible for the remote router This password is submitted to the remote unit for it to verify The password is case sensitive To ensure security it is recommended that
89. that connections to the remote sites are made as soon as the OfficeConnect Remote identifies data not destined for the local network IPX bridged link over ISDN to Remote Novell server Local Site TCP IP routed link over ISDN to PPP router providing connection to the Internet posit gt J N Figure 1 20 Multiple Connections from a Single Site je NS TCP IP routed links over ISDN to IP hosts Troubleshooting 1 39 Remedy Troubleshooting Sn If you cannot WARNING There are no user serviceable components connect your indde the cs of the unit OfficeConnect 2 Remote to the T CAUTION Read the section Important Safety spe information at the start of this manual The POVVER LED The OfficeConnect Remote is fully performance does not light tested after assembly Providing the unit has been correctly installed and is used in accordance with the instructions contained in this manual difficulties should not arise If unit or system maintenance is required then it must be carried out by a competent network engineer In the unlikely event that you experience problems with the unit the following procedure will enable you to undertake basic troubleshooting
90. the local password is different from the remote password CHAP Password for others to login to you By default this is set to UNUSED If you need to usea CHAP password enter the password provided by your Internet service provider or the system administrator responsible for the remote router Your unit verifies that the remote unit is valid by comparing its submitted CHAP password with the entry in this field The password is case sensitive Press CTRL HE to save this information An entry is made in the autocall table so that if any data destined for the Intemet or Remote PPP routed network a call is made automatically and a connection made to the remote router Enter SAVE at the command prompt to permanently store this configuretion in the unit s memory Monitoring ISDN Line Usage After you have first configured the unit for use with ISDN it is important to monitor ISDN line usage to ensure that the unit is working in the way you expect Check the ISDN 1 and ISDN 2 LEDs to ensure that unexpected calls are not being made or that connections are not remaining open when you expect them to have dosed Even if the ISDN Utilization LEDs are not lit call with little or no data transfer may be in progress depending on how you have connected or configured the unit Asin aconventional telephone call charges are made regardless of what is sent down the line until the call is dropped If you want to ensure that ISDN line usa
91. ting to the Internet or a PPP Router To connect to an Internet router or to a router using Point to Point Protocol PPP enter IN atthe command prompt on the Quick Configuration screen to display the screen illustrated in Figure 1 14 Terminal WINDOWS TRM EI File Edit Settings Phone Transfers Help CONNECT TO ANOTHER PPP IP ROUTER ETSI ISDN Name of your Internet Provider or remote site ISDN number of the remote unit you want to call Call Type 64K Unrestricted IP Address of this unit s LAN port 191 1 1 23 IP Mask of this unit s LAN port 255 6 8 8 IP Address of this end of the ISDN link UNNUHBERED IP Address of the remote end of the ISDN link UNNUMBERED IP Mask of the ISDN link UNNUMBERED IP Address of the remote hosts network INTERNET IP Mask of the remote hosts network INTERNET Manufacturer of remote router DEFAULT PAP Password to log into remote site UNUSED PAP Password for others to log into you UNUSED CHAP Password to log into remote site UNUSED CHAP Password for others to log into you UNUSED W Help G Main menu FE Submit L Prev menu Figure 1 14 Connecting To The Intemet Or PPP Router Complete the fields on this screen as follows D gt p Quick Configuration 1 27 If you are connecting to the Internet your service provider will be able to give you the correct values for each of these fidds If you are connecting to a remote PPP router check w
92. to the WAN port on the OfficeConnect Remote unit and the other to the NTU Connecting to the VOICE Port If your OfficeGonnect Remote is fitted with a Voice port then a standard telephone handset or other analog telephony equipment such as aa fax or answering machine can be connected to the port marked VOICE if required This port can also be used to connect the OfficeConnect fax server to ISDN Figure 1 7 Connect ISDN Cable Into A Proprietary ISDN Wall Box Some service providers offer Basic Rate ISDN gt connections with a single B channel If you connect a Connect the supplied ISDN cable from the ISDN port handset to a unit connected to this type of ISDN into the ISDN wall box NT1 See Figure 1 7 service you cannot pass data while the voice port is PER in use We recommend that you only connect voice T CAUTIONE Do not connect the ISDN line into the equipment to ISDN services offeringthestandard OfficeConnect Remote s LAN port as the ISDN line 2 Bchannd Basic Rate sevice voltage could damage the unit gt gt The VOICE port is terminated with an Rj 11 socket If your telephone equipment uses a different connector you will need to obtain a suitable convertor to connect to the OIE port A British Tdecomto 11 convertor is supplied with UK modes fitted with a Voice port Adial tone is not provided to the handset if the ISDN line is not operational or has been disconnected Connecting a Management Terminal Conn
93. ts will be uninterrupted or error free or that all defects in the software products will be corrected For any third party products listed in the 3Com software product documentation or specifications as being compatible 3Com will make reasonable efforts to provide compatibility except where the non compatibility is caused by a bug or defect in the third partys product STANDARD WARRANTY SERVICE Standard warranty service for hardware products may be obtained by delivering the defective product accompanied by a copy of the dated proof of purchase to 3Com s Corporate Service Center or to an Authorized 3Com Service Center during the applicable warranty period Standard warranty service for software products may be obtained by telephoning 3Com s Corporate Service Center or an Authorized 3Com Service Center within the warranty period Products returned to 3Com s Corporate Service Center must be pre authorized by 3Com with a Retum Material Authorization RMA number marked on the outside of the package and sent prepaid insured and packaged appropriately for safe shipment The repaired or replaced item will be shipped to Customer at 3Com s expense not later than thirty 30 days after receipt by 3Com WARRANTIES EXCLUSIVE IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE CUSTOMER S SOLE REMEDY SHALL BE REPAIR REPLACEMENT OR REFUND OF THE PURCHASE PRICE PAID AT 3COM S OPTION THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND
94. uick Configuration screen to display the screen illustrated in Figure 1 13 Terminal WINDOWS TRM X File Edit Settings Phone Transfers Help CONNECT TO ANOTHER IP NETWORK ETSI ISDN ISDN number of the remote unit you want to call f Call Type 64K Unrestricted IP Address of this units LAN 191 1 1 23 IP Mask of this units LAN 255 8 6 8 IP Address of this end of the ISDN link UNNUMBERED IP Address of the other end of the ISDN link UNNUMBERED IP Mask of the ISDN link UNNUMBERED IP Address of the remote hosts network DEFAULT IP Mask of the remote hosts network DEFAULT W Help G Main menu FE Submit L Prev menu Figure 1 13 Connecting to an IP Host on a Different Network Complete the fields on this screen as follows Remote ISDN Number Type the ISDN number of the remote unit that connects to the remote IP network Call Type Set the Call Type for each ISDN number Use 64k Unrestricted for Euro ISDN lines Use 56kV 110 or 56k_restridted in the USA depending on the requirements of your ISDN service provider IP Address of this unit s LAN Type the IP address of this unit This the address you entered on the Name screen IP Mk of this unit s LAN Type the IP subnet mesk you entered for this unit on the Name screen See Appendix A for more informetion about subnet masks IP Adidress of this end of the ISDN link By default this field is set to UNNUMBERED which allows un
95. unicete with a network server on LAN 2 The stetion on LAN 1 constructs a Layer 2 datalink header see Figure A 5 with the source station s hardware address and also the destination hardwere address of the local router To direct the packet to its final network destination the source station must complete the Layer 3 network header with the destination network address of LAN 2 Once the packet is received by the Router A attached to LAN 1 it strips off the network header refer to Figure A 5 and examines the Layer 3 datalink header information It then reviews its routing tables in order to establish where to forward the data packet It is possible that the LAN 1 router has multiple outgoing ports that would allow different transmission routes to the destination network In our example using Figure A 3 a packet could go via Router D to get to Router B or it could go more directly across a single direct link between Router A and Router B Routing IP and IPX A9 Network Data link header header Destination Source 1 Destination Source Data Network Network Hardware Hardware i Address Address h Address i Address Packet I 1 I I RE r AA Layer 3 Layer 2 Internetwork Local network routing access Figure A5 Data Packet Containing Hardware And Software Addresses IP Routing The local router contains within its routing table information which will allow it to determine the best data transmission rou
96. ustomer the purchase price paid for the defective product All products that are replaced will become the property of 3Com Replacement products may be new or reconditioned Any replaced or repaired product or part has a ninety 90 day warranty or the remainder of the initial warranty period whichever is longer 3Com shall not be responsible for any software firmware information or memory data of Customer contained in stored on or integrated with any products retumed to 3Gom pursuant to any warranty SOFTWARE 3Com warrants that the software programs licensed from it will perform in substantial conformance to the program specifications therefor for a period of ninety 90 days from the date of purchase from 3Com or its Authorized Reseller 3Com warrants the magnetic media containing software against failure during the warranty period No updates are provided 3Com s sole obligation hereunder shall be at 3Com s discretion to refund the purchase price paid by Customer for any defective software products or to replace any defective media with software which substantially conforms to 3Com s applicable published specifications Customer assumes responsibility for the selection of the appropriate applications program and associated reference materials 3Com makes no warranty that its software products will work in combination with any hardware or applications software products provided by third parties that the operation of the software produc
97. veau de s curit 42 2V max ou 60 V DO Connecter uniquement des unit s conformes aux normes relatives des interfaces de cet quipement Il n y a pas de parties remplaceables par les utilisateurs ou entretenues par les utilisateurs l int rieur du moyeu Si VOUS avez Un probl me physique avec le moyeu qui ne peut pas tre r solu avec les actions de la r solution des probl mes dans ce guide contacter votre foumisseur D brancher la pi ce de raccordement d alimentation avant de remuer le moyeu AVERTISSEMENT Le port de donn es Rj 45 de paire tordue Ceux d est un sode de donness Ri 45 blind Il ne peut pas tre utilis comme socle de td amp phone Seulement brancher les connecteurs de donness RJ 45 ce sode CONTENTS IMPORTANT SAFETY INFORMATION WICHTIGE SICHERHEITSHINWEISE L INFORMATION DE S CURIT IMPORTANTE ABOUT THIS GUIDE Introduction 1 How to Use This Guide 1 Conventions 2 Additional Safety Information 3 1 GETTING STARTED Introduction 1 1 OfficeConnect Remote Features 1 1 Benefitsof ISDN 1 3 Pack Contents Checklist 1 4 Registering Ownership Of Your OfficeConnect Remote 1 5 Pre installation Requirements 1 5 OfficeConnect Remote Front and Rear Panel Features 1 6 Installation 1 10 Sting the OfficeConnect Remote 1 10 Using the Rubber Feet and Stacking Gips 1 11 Well Mounting the OfficeConnect Remote 1 12 Connecting the Power Adapter 1 12 Connecting to Your 10BaseT LAN 1
98. vider Remote IP Address Type the IP address of the remote IP host to which you want to connect Press CTRL E to submit this information An entry is made in the autocall table so that if any data destined to the remote host a call is made automatically and a connection made to the remote IP network Enter SAVE at the command prompt to permanently store this configuration in the units memory Although calls to the remote site are only generated when data is addressed to a specific IP host or hosts in our example 191 000 000 100 any data that cannot be identified as local is also passed over the link while it is open This can prevent the link from closing after the intended data has been transferred To avoid this situation you can also configure the units at both ends of the link to implement a Firewall and or set the Maximum Call Duration in the ISDN parameters screen to reduce the amount of traffic permitted to pass across the link See the Software Reference guide for more information about these features Altematively you may wish to configure the unit to operate as a router to prevent this problem occurring altogether However this requires that each site consists of separate subnets See the next section for more information Quick Configuration 1 25 Connecting to an IP Host on a Different IP Network To connect to an IP host on a different network using FastConnect enter IPR at the command prompt on the Q

3Com 510 Universal Remote User Manual

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