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ADC 500L Network Card User Manual

1. 2 LN M sen EE 3 Connection to a Remote Office iii 3 Internet Access for Users at HOme VR dd nre 4 Chapter 2 What You Need To Start 5 Verify Package Contents sss NER OO enne 5 Requirements For Your System MMI 6 Requirements For The Installation 1 6 Location for Modem Installation eese 6 Phone Siig eene 9 What You Need from Your Service Provider serere 9 Choose a Power Cable _ 9 Chapter 3 Installing the Modem 11 Attaching the Feet So 12 Setting thediliDI MDI X SWIEBB i eterne nennen nente nenne 13 Instal afi Cab O ii 14 E OJNIBM V RERUM 15 Chow LED MRP cations 15 Service nennen nennen nnne nnne nne nenne 16 Chapter 4 Setting Up For Configuration 17 Setting Up the PC to Request an IP Address eese 18 Configuring a Web Browser i 19 Accessing Megabit Modem 500L Web Pages ee 20 Megabit Modem 500L Installation Manual v Table of Contents PRELIMINARY Saving the Configurations ome Ub 21 Saving the Configuration to NVRAM
2. li 22 Resetting the Modem to Factory Defaults essen ps Resetting the Modem eene 25 Chapter 5 Configuring System Settings 27 Defining TFTP Parameters eee M ims 28 Defining SNMP Parameters esee EBD D 29 Setting the Time and Date s iif AA 31 Chapter 6 Configuring Sessions 33 Selecting a Configuration Model rei 34 Configuring PPP over ATM Sessions Mie 35 Configuring the f 0 7 36 Configuring the LAN 4 85 N n 39 Saving the Configuration Be 42 Activating and De Activating Sessions 43 Activating 43 De Activating 9 44 Chapter 7 Viewing Statistics 45 Viewing tatus 97 45 emen 48 Lap al esis 48 MICA N EI eerte ine 50 Chapter 8 Maintenance and Troubleshooting 51 ile era en 51 Updating Softwate z ui da e E Ee 51 Troubleshooting ascritta deli 53 vi Megabit Modem 500L Installation Manual PRELIMINARY Table of Contents Chapter 9 Technical Reference 55 Transmission on the Wide A
3. STISTHONISCLIGIILINDPGRKNGIAIEN Reach in Kilofeet Downstream Upstream Payload Rate vs Reach on 26 AWG 0 5 mm with 4dB Margin in Low Noise Environment 10 000 3 1 000 o a a z 2 a 0 100 4 STIFISIGGNSPHFIOLFICLCIISGRIAFAZHIEN Reach in Kilofeet Downstream Megabit Modem 500L Installation Manual Upstream 65 Hardware PRELIMINARY HARDWARE The following provides additional information about Megabit Modem 500L such as the installation kit and modem connectors pinouts Installation Kit The following items are included in the installation kit and are used to install the Megabit Modem 500L as shown in Chapter 3 on page 11 Part Description Function Rubber feet Four black rubber feet Attaches to the base of the modem Grey cable Silver satin phone cord with 4 pin modular Connects the modem ADSL connector to the plugs straight through wall phone jack for access to the Internet Black cable CAT 5 cable with 8 pin modular plugs Connects the modem 10 100BASE T connector straight through to the LAN through a hub or to a PC NIC Power cable Power supply with optional power cord this Connects the modem POWER connector to the item is ordered dependent on the type of local power source power supply and cord required for your location Screws Two 6x inch sheet metal screws Installs into a wall for wall mounting modems 66 M
4. You set up a PC and a Web browser to configure the Megabit Modem 500L This chapter provides the set up procedures then shows you how to access and navigate the Megabit Modem 500L Web pages The configuration process flow is shown below Setting Up the PC to Request an IP Address Configuring a Web Browser Accessing Megabit Modem 500L Configuring System Settings Defining TFTP Parameters Defining SNMP Parameters Setting the Time and Date Chapter 4 on page 17 Chapter 4 on page 19 Chapter 4 on page 20 Chapter 5 on page 27 Chapter 6 on page 33 Configuring PPP over ATM Sessions Configuring the WAN Configuring the LAN Defining Static NAT Entries Saving the Configuration Activating and Deactivating Sessions Megabit Modem 500L Installation Manual 17 Setting Up the PC to Request an IP Address PRELIMINARY SETTING UP THE PC TO REQUEST AN IP ADDRESS 18 You configure the Megabit Modem 500L using a PC connected to the 10 100BASE T port The PC must be set to obtain an IP address automatically from the modem The modem as Dynamic Host Configuration Protocol DHCP server provides an IP address to this PC dynamically The following is an example of how to set up the PC using Microsoft Windows 95 If you use an application other than Windows 95 refer to the appropriate operating system user documentation 1 Openthe Control Panel window and double click on the Network icon
5. Dynamic Or C Fixed te 5 If fixed enter asssigned IP address fo 0 0 0 Previous Delete Submit Next User Assignment 36 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 6 Configuring Sessions Enter the Chap Host name provided by the service provider The name is used for CHAP authentication of this session The name must be identical for the user session and for the service provider See page 73 for the CHAP name you recorded from the service provider Select the Enable checkbox when you want to use NAT protocol Address Translation to translate the session IP address to private IP addresses It is recommended that you always enable NAT You can choose however not to use NAT for address translation If you do not use NAT you can assign only one LAN user one PC to the session The IP address for the LAN user PC must be the same IP Address Assignment given to the session by the service provider shown in field on page 36 See page 18 to configure the PC to accept the entry of a manual IP address select Specifyan IP address then manually enter the session IP address Select Dynamic as the Address Assignment if the service provider will automatically assign an IP address for this session during set up When the address is dynamically assigned the address field will display the assigned value after the session comes up Select Fixed as the Address Assignment if the service provider gave you an
6. Megabit Modem 500L Installation Manual 45 Viewing ADSL Status PRELIMINARY Description of the ADSL Statistics fields are on page 46 Click Home to return to Main Menu 46 Megabit Modem 500L Installation Manual PRELIMINARY 7 Chapter 7 Viewing Statistics Clicking Reset on the ADSL Menu will bring down the ADSL loop between the modem and the service provider View the following ADSL link information O o o 8689 System time and date and total hours link is up ADSL link is synchronized between the modem and the service provider or the link has no connection Any alarm conditions such as Loss of Sync LOS Loss of Frame LOF Loss of Margin LOM or Loss of Cell Delineation LCD The SNR margin at which the modem is currently operating dependent on parameters selected by the service provider Minimum SNR margin allowed before the MAR LED on the modem front panel illuminates Total number of seconds that the ADSL link had errors in a 24 hour span Total amount of time that the lines were not available for transmission since power on occurred or the modem statistics were last cleared total unavailable seconds Line attenuation in decibels from 10 to 80 db The upstream and downstream data transmission rates Click Clear to reset all statistics Megabit Modem 500L Installation Manual 47 Viewing Network Statistics PRELIMINARY VIEWING NETWORK STATISTICS The Meg
7. MEGABIT MODEM Model 500L User Manual PRELIMINARY PairGain Technologies cannot assume responsibility for any consequences 2 resulting from the use of this product or documentation The information contained herein is subject to change PairGain reserves the right to change features and specifications without notice July 1999 Preliminary Copyright 1999 PairGain Technologies Inc PairGain and Megabit Modem are registered trademarks and AccessGain PriorityVoice InstaConnect EasySession and DSLview are trademarks of PairGain Technologies Inc AVIDIA is a registered trademark of PairGain Wallingford Design Center Inc Information contained in this document shall not be modified used copied reproduced or disclosed in whole or in part without the written consent of PairGain Technologies Inc Other product names mentioned in this practice are used for identification purposes only and may be trademarks or registered trademarks of their respective companies ii Megabit Modem 500L Installation Manual PRELIMINARY About This User Manual ABOUT THIS USER MANUAL Use this manual to install and configure the PairGain Megabit Modem 500L The manual provides instruction on e information you will need to configure the modem e unpacking and inspecting the modem for installation installing the modem setting up parameters for your applications that will be used to configure the modem e configuring system
8. 31 for 10BASE T and IEEE 802 3u for 100BASE T PHYSICAL SPECIFICATIONS Height 1 2 inches 3 1 cm Width 6 9 inches 17 56m Depth 9 2 inches 23 4 cm Weight 2 2 pounds 1 0 kg POWER SUPPLY Voltage 100 to 240 Vac Frequency 50to 60 Hz Current 0 3 Amps 62 Megabit Modem 500L Installation Manual PRELIMINARY ENVIRONMENTAL Operational Temperature Relative Humidity Altitude COMPLIANCE Emissions and Immunity Compliance Operations and Safety Compliances Megabit Modem 500L Installation Manual Appendix A Specifications and Data 32 to 122 F 0 to 50 C up to 95 non condensing between 200 and 13 000 feet 61 to 3 962 meters e FCC Part 15 Subpart B Class B e CENELEC ETSI IEC 555 and 801 e CE EN 55022 and EN 50082 1 e UL and UL UL 1950 e CE EN 60950 63 RFCs PRELIMINARY RFCS e RFC 2364 PPP Encapsulation over e RFC 1661 for PPP LCP e RFC 1994 for PAP CHAP Authentication e RFC 1631 IP Network Address Translator for e RFC 1350 for TFTP client MIBS e TR 006 ADSL Forum ADSL Line MIB e 11 413 section 8 2 N N 64 Megabit Modem 500L Installation Manual PRELIMINARY RATE VS REACH Appendix A Specifications and Data Payload Rate vs Reach on 24 AWG 0 4 mm with 4dB Margin in Low Noise Environment 10 000 1 000 4 o a 2 ee ee ee SE 2 m 0 100
9. Megabit Modem 500L and the service provider 1 Do the following to configure the WAN Select a name for the service that is descriptive The service name is an 2 identifier use for the session is used for anything else Each service name must be unique When you enter a service name it displays as the Port name for that session on the EasySession page Entera descriptive name for the Service Name The name you enter here also displays in the Port field on the EasySession page the fields are linked Use a maximum of 19 characters for the service name with no spaces allowed in the name Enter the ATM VPI and ATM VCI values provided by the service provider The addresses are the virtual path identifier and virtual channel identifier for the session connection ATM between the modem and the service provider See page 74 for the VPI and VCI values you recorded from the service provider Also see Mapping an ATM Session on page 56 for information on VPI and VCI values Enter your Login Name and Login Password supplied by the service provider See Login Name Login Password Worksheet on page 74 PPP Over ATM Wan Configuration Service Name fsrveProvider1 Permanent Virtual Circuit ATM VPI fo ATM VCI 109 dM Login Parameters Login Name faces Login Password 7 Chap Host 4 Address Translation Enable 4 4 Address Assignment
10. T Megabit Modem 500L Installation Manual 13 Installing Cabling PRELIMINARY INSTALLING CABLING Install the black cable for the 10 100BASE T LAN connection grey phone cord for the ADSL port WAN connection and the power cable to the power connector Megabit Modem 500L 10 100 BASE T port PC hub or other network device ADSL port WP TX fr connector Wall jack with DMT ADSL m od service outlet If you need pinouts for the ADSL and 10 100BASE T connectors see Connector Pinouts on page 67 14 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 3 Installing the Modem SETTING UP ADSL SERVICE The service provider sets up the ADSL parameters for your service The modem must have the ADSL SYNC LED lit before you can connect sessions with your service provider Verify SYNC in the following section Checking LED Indications CHECKING LED INDICATIONS The following table describes LED indications for all operational modes LEDs on the modem front panel page 16 provide continual status at a glance for network and modem connections LED State Description PWR On green Modem has power Off Modem does not have power LAN LINK On green A PC hub or other network device is connected to the modem 10 100BASE T interface Off No device is connected to the modem 10 100BASE T interface TX Flashing green Modem is transmi
11. also specify another IP address to designate a second device for a secondary DNS resolver The DNS device maps human readable addresses to IP addresses A human readable address is one such as maggie copro company com that contains a host name and domain The DNS resolver maps that name to the IP address that is a numeric four octet value such as 192 168 30 25 see page 39 for the example on how to configure a DNS address TFTP SERVER Trivial File Transfer Protocol TFTP is a standard for file transfer It provides the service with minimal capability and minimal overhead TFTP uses UDP for connectionless delivery Megabit Modem 500L Installation Manual 59 TFTP Server PRELIMINARY 60 Megabit Modem 500L Installation Manual SPECIFICATIONS AND DATA WAN INTERFACE SPECIFICATIONS ADSL Asymmetric Digital Subscriber Line Maximum transmission rate Downstream 1 5 Mbps Upstream 512 kbps Minimum transmission rate to sync 64 kbps Rate adaptive data rate resolutions 32 kbps increments Signal Format DMT Discrete Multitone line code Connector RJ 11 ATM Asynchronous Transfer Mode ATM Adaptation Layer AAL5 ITU 1 363 5 Supports encapsulation and de encapsulation of AAL5 Protocol Data Units PDUs for convergence Segmentation and Reassembly SAR layer segments and reassembles AAL5 PDUs into ATM cells that are 48 byte SAR PDUs ATM Layer Attaches or strips the 5 byte header to the 48 byte SAR PDU Performance is a
12. and write the changes to RAM Some configuration changes are not permanent however until you write them to Non Volatile RAM NVRAM and reset the modem You must reset the modem to effect these changes e when defining PPP over ATM LAN settings see page 39 LAN IP address LAN network mask e when DHCP enabled see page 39 DHCP start IP address primary DNS IP address secondary DNS IP address See the following sections to e save configuration changes to NVRAM page 22 reset the modem to activate the configuration page 25 e reset the modem to restore the factory default values page 23 Megabit Modem 500L Installation Manual 21 Saving the Configuration PRELIMINARY Saving the Configuration to NVRAM After clicking Submit to write configuration parameters to RAM update your configuration writing the parameters to non volatile RAM NVRAM 1 Click System on the Main Menu to access the System Menu 2 Click Update Configuration on the System Menu 3 Click Proceed to save to 4 Reset the modem to effect configuration using the procedure on page 25 22 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 4 Setting Up For Configuration Resetting the Modem to Factory Defaults You can return Megabit Modem 500L parameters to the factory default values Thi a known starting point if you are troubleshooting the system or simply want to reco parameters The factory default v
13. configure these parameters Configuring Static NAT entries is optional Click Submit after completing the LAN configuration page After changing a LAN IP address and subnet mask or changing the IP address and subnet mask effect the configuration by completing the procedures for Saving the Configuration on page 21 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 6 Configuring Sessions Defining Static NAT Entries Static NAT entries are required only for applications that use TCP UDP connections initi from the remote end WAN Through the Static NAT Table you can map inbound tra remote user to a user on your LAN You can enter a maximum of 32 static N 1 Do following to map static NAT entries Q Enter the Private IP Address for a user on the LAN that is mapp Enter the Proxy IP Address which is the IP address assi the service provider see the field on page IP address Port is the logical port for the prot NAT entry Your system administrator will pro col port number e poon weg UDP Megabit Modem 500L Installation Manual 41 Saving the Configuration PRELIMINARY Enterthe Remote IP Address for a user at a remote site that you are mapping to a user on the LAN LAN user was entered in field of the Static NAT Entry shown above Port is the logical port for the protocol UDP or TCP you select for this NAT entry Your system administrator will provide the protocol
14. ction is active Down The EasySession page provides status for each session Up m e the link with the means the connection is not active Set Up means theanodem service provider 1 the main page select the to activate session that you want SrvcProvideri e SrvcProvider2 ick Enable at the bottom of the EasySession page to activate the selected sessions Megabit Modem 500L Installation Manual 43 Activating and Deactivating Sessions PRELIMINARY Deactivating Sessions On the Web browser click the Reload icon shown to the right to refresh the screen 1 On the EasySession main page select the box next to each session that you want to disable Up Down and Set Up are read only fields that provide status for the session v SrvcProvideri SrvcProvider2 Click to select sessions 2 Click Dis tt tto lt Bo Megabit Modem 5001 Installation Manual the EasySession page to disable the selected sessions VIEWING STATISTICS You can view status for the ADSL link Viewing ADSL Status shown below and for WAN and LAN statistics Viewing Network Statistics on page 48 ViEWING ADSL STATUS The Megabit Modem 500L displays the status of the ADSL link From the Main Menu select ADSL to display the ADSL Menu and ADSL Statistics page see page 46 Reset on the ADSL Menu will bring down the ADSL loop between the modem and the service provider
15. must have the Proxies di the Proxie for your Web browser 1 Web browser Netscape Communicator is shown in the 2 Select Edit Preferences Proxie 3 Select Direct connection to the Internet then click OK i Using Communicator Help Netscape E dit Preferences E Appearance Fonts Colors lavigator i Languages Mail amp Groups Composer Disk Space Megabit Modem 500L Installation Manual 19 Accessing Megabit Modem 500L Web Pages PRELIMINARY ACCESSING MEGABIT MODEM 500L WEB PAGES Type http 192 168 0 1 index htmin the Location field of the Web browser as sh below then press 192 168 0 1 is the default IP address for the Ethernet port and i private address specified for use by RFC 1918 If you change the Ethernet IP addres the management port you will enter the new IP address in the Location field E index Netscape ww a Forward A http 192 168 0 1 index htm We Frame A contains the navigation menus Use th e configuration or management page you want to view in Fra Frame B displays the configuration or lated with the menu item you selected from the navigation menu in X index Netscape http 192 168 0 Frame A Frame B 20 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 4 Setting Up For Configuration SAVING THE CONFIGURATION As you make changes to the modem configuration click the Submit button on the Web page to accept changes
16. platform e autodetecting 10 100BASE T Ethernet port for connection to the LAN e DSLview LEDs to provide continual status at a glance of power LAN and ADSL connections e technology with three virtual channels to allow one active Internet or other WAN application session at a time e PriorityVoice M to allow full deployment of the modem without splitters or microfilters e InstaConnect Mto sense phone activity and optimizes performance On a Megabit Modem 500L you can configure three PPP over ATM sessions However you can enable only one of the sessions at a time You assign the user to the session that is active Chapter 9 on page 55 provides more information about the technologies implemented in the Megabit Modem 500L 2 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 1 About The Product APPLICATIONS The Megabit Modem 500L provides a practical solution for many networking applications The following illustrations show some of the many possible solutions when using the Megabit Modem 500L Connection to a Remote Office You can work at home or at a remote office and have a connection to a corporate office network Corporate Office Remote Office Provider gt Network G J Remote Office Connectivity Megabit Modem 500L Installation Manual 3 Applications Internet Access for Users at Home You can connect an at home user to the Internet Internet Access P
17. DSL LED Contact the service provider when the LED remains off indicating that the modem is not detecting a transceiver at the far end Flashing green indicates that the modem is attempting to bring up the link Solid green indicates that the loop is up The modem synchronizes at a minimum transmission rate of 64 kbps The modem rate adapts in increments of 32 kbps MARGIN ADSL Contact the service provider when the LED is off indicating that the margin is below that LED lights green specified by the service provider LAN TX and Check that the LINK LED is on If it is on you are simply not transmitting or receiving data LEDs are noton onthe LAN 10 100BASE T port If however the LINK LED is not on check the section PC or hub not communicating with the modem in this table ADSL TX and RX Check that the SYNC LED is on If it is on you are not transmitting or receiving data on the LEDs are noton WAN ADSL port If however the SYNC LED is not on contact your service provider Megabit Modem 500L Installation Manual 33 Troubleshooting PRELIMINARY 54 Megabit Modem 500L Installation Manual TECHNICAL REFERENCE This chapter provides technical information about how your modem transmits data between users on your LAN and a service provider over the WAN TRANSMISSION ON THE WIDE AREA NETWORK The technology is ATM over DMT ADSL that provides the high speed transmission between the modem and the service provider This tra
18. DUs were transmitted and received on the session and how many PDUs were corrupted Bad PDUs Clicking Clear resets all statistics A 4 ww Megabit Modem 500L Installation Manual MAINTENANCE AND TROUBLESHOOTING MAINTENANCE You can update software in the modem by specifying a device on th LAN where you will place new software for the update see Defining TFTP Parameters on page 28 Then use the procedure Updating Software on page 51 to download software from the TFTP device to the Megabit Modem 500L Updating Software You can download software upgrades to your system Use the Web page shown on page 52 to initiate the upgrade To download software you must have a host on your network that has been configured as a TFTP server You set the IP address for the TFTP server and a directory path to the software when you configure system parameters in Chapter 5 on page 27 To update the Megabit Modem 500L software ensure these files are available to download from a TFTP server You can download any of these files separately e bin binary image files for software updates e initialization files for modem configuration htm html files for Web page updates Megabit Modem 500L Installation Manual 51 Maintenance PRELIMINARY Before initiating a software upgrade ensure that all files are in the directory you specified on the TFTP server when you configured system parameters 1 Clic
19. IP address for the session If the address is fixed type in the fixed IP addresses you recorded on page 74 into the field If fixed enter assigned IP address This IP address is also referred toas the proxy address for the session Click User Assignment to open a dialog in which you can map LAN users to each session Go to the section Defining User Assignment Parameters on page 38 to configure the user assignments 2 Click Submit to accept the WAN PPP session configuration 3 To configure other sessions a Click EasySession on the Main Menu then click Edit by the Port 1 3 that you want to configure Or if you want to modify an existing session click Previous or Next to locate the session you want to modify b Repeat Step I to configure the session Deleting a PPP over ATM WAN Session Configuration 1 From the PPP over ATM WAN Configuration page click Previous or Next to access the session configuration you want to delete 2 Click Delete to remove a configuration that is displayed on the current Web page Megabit Modem 500L Installation Manual 37 Configuring PPP over ATM Sessions PRELIMINARY Defining User Assignment Parameters You can map your PC to only one of the three sessions at a time If you want to use a different session select User Assignment on the PPP over ATM WAN Configuration page and move the user assignment to another session Enter the IP address for the PC that is assigned to this session 1 D
20. L Installation Manual 79 PRELIMINARY 80 Megabit Modem 500L Installation Manual INDEX Numerics 10 100BASE T connector pinouts 67 description 75 700F web pages accessing 20 configuring 19 A accessing 700F web pages 20 activating sessions active sessions at power up 43 PPP over ATM 43 adaptation layer461 addresses VCI 56 VPI 56 ADSL connector pinouts 67 description 55 75 DMT 55 loop Reset 45 service 15 specifications 61 viewing status 45 47 Megabit Modem 500L Installation Manual asymmetric digital subscriber line See ADSL asynchronous transferimode See ATM ATM adaptation layer 61 cell format 61 description 56 75 max VCs 61 specifications 61 attaching modem feet 12 authentication security 57 B back panel 13 14 C cables connecting 14 installation 14 requirements 11 cell formats 61 compliance 63 81 configuration introduction 1 modem 17 saving 21 42 service provider 9 web browser 1 17 configuration worksheets 73 configuring 700 web pages 19 LAN 39 PC 18 PPP over ATM sessions 35 sessions 33 system settings 27 WAN 36 web browser 19 connecting cables 14 modem feet 12 phone service 16 connector pinouts 67 D de activating sessions PPP over ATM 44 82 PRELIMINARY defining dynamic IP addresses 37 fixed IP addresses 37 SNMP parameters 29 static NAT table parameters 40 TFTP parameters 28 time and date 31 user assig
21. LAN from which you can download software updates to y modem See page 59 for more information on a TFTP server Also see page 51 for procedur on how to update the software on your modem ide You can enter 1 Click System from the Main Menu 2 Click TFTP Parameters on the System Menu 3 Do the following Enter the TFTP server IP address for the device that will be Enter the TFTP server net mask subnet mask for th Enter the Path on the TFTP server where the path with a maximum of 20 characters 4 Click Submit to accept the changes 192 168 30 51 Factory Default Reset Unit e to to the Main 28 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 5 Configuring System Settings DEFINING SNMP PARAMETERS The modem has an SNMP agent that allows it to be managed remotely by a Netwo Management System NMS See page 58 for more information about managing the modem through SNMP 1 Click System from the Main Menu 2 Click SNMP Parameters on the System Menu 3 Dothe following Q Select Enable Trap Sending if you want the modem your LAN server on Enter the Trap Server IP Address for erver i traps will be sent Enter the Trap Server Net Mask be sent er to which the traps will n 192 168 0 100 4 00 0000 lick d to return to the Home Main Menu Megabit Modem 500L Installation Manual 29 Defining SNMP Parameters PRELI
22. MINARY 30 You can change the community string to a name you choose The fields have default names as shown in the screen on page 29 and are case sensitive If you change the name however the community string name must match on both the manager and agent to allow access to the SNMP function Public is the default Trap Community String which is an authentication string for the trap receiver You can change the name using up to 19 characters Public is the default Get Community String which is an authentication string that enables an NMS to get status from the modem agent You can change the name using up to 19 characters Private is the default Set Community String which is an authentication string for an NMS to set or change parameters on the modem agent You can change the name using up to 19 characters 4 Click Submit to accept the changes Megabit Modem 500L Installation Manual PRELIMINARY Chapter 5 Configuring System Settings SETTING THE TIME AND DATE Set the time and date for the modem 1 Click System from the Main Menu 2 Click Set Date amp Time on the System Menu 3 Do the following Enter the date in the format dd mm yy for example 03 10 19 1999 une 10 Enter the time in the 24 hour format hh m iss for minutes and 6 seconds past 3 p m 55 is 29 4 Click Submit to accept the changes 06 11 1998 15 29 06 eoo Home Megabit Modem 500L Installation Manual 31 Sett
23. PRELIMINARY Chapter 9 Technical Reference PAP CHAP Authentication Security Password Authentication Protocol PAP and Challenge Handshake Authentication Protocol CHAP are two ways to authenticate PPP sessions PAP and CHAP are both offered since some systems support only PAP With PAP the modem sends authentication requests to the service provider and authentication occurs only once during the life of the link In CHAP the service provider returns an authentication challenge to th modem during authentication CHAP can be renegotiated during the life of the link Also both the modem and the service provider must support clear text versions of the password The CHAP host field must be the same on both ends of the session NAT RFC 1631 Network Address Translation NAT provides the means to map private IP addresses to the public IP addresses proxy addresses that are setup for the PPP sessions Essentially you hide your private addresses behind the public IP address assigned to a session You can map one LAN user IP address to one of the three sessions you set up If you want to activate a different session move the CAN user to the new session Static NAT entries are required only for applications that involve TCP UDP connections initiated from the remote end WAN An example is the RealPlayer application The RealPlayer client initiates a TCP connection to the RealServer which then initiates a UDP connection back to RealPlay
24. RELIMINARY Internet Access Megabit Modem 500L Installation Manual WHAT You NEED TO START This chapter identifies the preparations and prerequisites for installing the Megabit Modem 500L To install the modem verify that e the contents of the package are as described on this page e your system meets requirements for connecting to and configuring the modem see Requirements For Your System on page 6 your facility meets installation site requirements see Requirements For The Installation Site on page 6 e the configuration parameters are available from your service provider see What You Need from Your Service Provider on page 9 VERIFY PACKAGE CONTENTS As you unpack the Megabit Modem 500L visually inspect the container for signs of damage If the equipment was damaged in transit report the damage to the transportation company and to the sal s representative Check the contents ofthe package for the Megabit Modem 500L and the following one black cable one grey phone cord e four rubber self adhesive feet e two screws e power supply and optional power cord see Choose a Power Cable on page 9 for options If you need to store the modem for a prolonged period store it in the original antistatic bag and packaging Observe environmental specifications as stated on page 63 Megabit Modem 500L Installation Manual gt Requirements For Your System PRELIMINARY REQUIREMENTS FOR YOUR SYS
25. Service Provider If using CHAP for authentication enter CHAP host name for each session 73 Megabit Modem 500L Installation Manual Configuration Information PRELIMINARY WAN Configuration Worksheet From Service Provider Configuration Information ATM Configuration VPI VCI VPI VCI for each session 1 1 2 2 3 3 Login Name Login Password Worksheet From Service Provider Login Information Login Name and Login Login Name Login Password Password for each session 1 1 2 2 3 3 Fixed IP Addresses Worksheet From Service Provider Fixed IP Addresses Fixed IP Addresses 1 for each session 2 Not applicable if service provider 3 dynamically assigns IP addresses 74 Megabit Modem 500L Installation Manual 10 100BASE T AALS ADSL ATM attenuation authentication BER bps CBR cell GLOSSARY The Institute of Electrical and Electronic Engineers IEEE 802 3 specification for Ethernet over thin coaxial cable ATM Adaptation Layer 5 TBS Asymmetric Digital Subscriber Line is a technology in which data is transferred from the service provider to the subscriber at up to 7 552 Mbps and transferred from subscriber to service provider at up to 928 Kbps ADSL is the implementation of the physical layer for transmission of data Asynchronous Transfer Mode is a high bandwidth low delay connection oriented packet like switching and multipl
26. TEM You need the following hardware and software to complete the installation and configuration of the Megabit Modem 500L e PC with an Ethernet Network Interface Card NIC e TCP IP network protocol stack see your documentation for your operating system e Web browser installed such as Netscape or Internet Explorer version 4 0 or higher e Ethernet hub optional REQUIREMENTS FOR THE INSTALLATION SITE To install the Megabit Modem 500L you must e select a location to install the modems as described in the section Location for Modem Installation on this page e if you get phone service identify requirements to connect phones as described in the section Phone Service on page 9 Location for Modem Installation You can install the modem either e placedonafflatsurface shown on page 7 e mounted on a wall shown on page 8 Your facility must have the following minimum site requirements to install each modem e poweroutlet e RJ 11 wall jack that has DMT ADSL service available 6 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 2 What You Need To Start Flat Surface Mount Do not stack the modems when installing on a flat surface The modems do not dissipate heat properly when stacked Place the modems on a flat surface such as on a table or in a rack Minimum 1 inch clearance ll Minimum 1 inch clearance Megabit Modem 500L Installation Manual 7 Requirements For The Install
27. UGS OR THAT ITS USE WILL BE UNINTERRUPTED OR REGARDING THE USE OR THE RESULTS OF THE USE OF THE SOFTWARE IN TERMS OF CORRECTNESS ACCURACY RELIABILITY OR OTHERWISE 70 Megabit Modem 500L Installation Manual PRELIMINARY Appendix B Technical Assistance and Warranty ADVANCE REPLACEMENT Any product determined by PairGain not to comply with the applicable warranty within 30 calendar days from the date of shipment to the Buyer or as otherwise authorized are eligible for advance replacement free of charge A replacement product will be shipped to the Buyer within 24 hours of PairGain s receipt of notification from the Buyer If products returned to PairGain for advance replacement are not received by PairGain within 30 calendar days of shipment of the replacement product or if no trouble isfound NTF as determined by PairGain the Buyer will be responsible for payment of the cost of the replacement product BILLING PairGain s repair of products returned forrepair replacement or credit whether in warranty or out of warranty which is found to be damaged due to customer negligence or which has had parts removed will be billed on a time and material basis In the event that the returned equipment is not covered by warranty PairGain will contact the customer with estimated repair or replacement charges and obtain customer disposition of the product if a purchase order has not been provided Equipment returned for repair or replacement i
28. abit Modem 500L displays the status for the LAN and WAN links From the Main Menu select Statistics to display the Statistics Menu LAN Statistics The Megabit Modem 500L displays status for the LAN Click LAN Statistic Statistics Menu 95 4 14 62 oo 20 27 70 95 01 4 O e Click Home e to return to Main Menu 5 48 Megabit Modem 5001 Installation Manual PRELIMINARY Chapter 7 Viewing Statistics View the following LAN information System time and date and total hours link is up IP and Ethernet addresses for the modem LAN port Total number of IP packets processed Number of errored packets detected at this port and the number of packets forwarded Number of packets reassembled at this port and the number of transmissions where a route was not found in router table Total number packets received and transmitted Total number of packets dropped and the number of collisions of devices on segment Clicking Clear resets all statistics Megabit Modem 500L Installation Manual 49 Viewing Network Statistics PRELIMINARY WAN Statistics The Megabit Modem 500L displays status for the WAN Click WAN Statistics from the Statisti Menu The values in the statistics fields are a total for all VCs configured Click Home to return to Main Menu System time and date and total hours link is up Statistics for the ATM layer including how many Protocol Data Units P
29. alues are listed on page 24 1 Click System on the Main Menu to access the System Menu 2 Click Factory Default on the System Menu _ When you click Proceed to return to factory default values the modem F automatically resets 3 Click Proceed to return to factory default va CAUTION This action will restore the factory default configuration To Proceed with this option will cause all active connections to drop and the modem to reset Are you sure you want to proceed Megabit Modem 500L Installation Manual 23 Saving the Configuration PRELIMINARY Parameter Default Value Parameter Default Value System Setup System Mode PPP over ATM SNMP parameters TFTP parameters Enable trap sending Not enabled TFTP Server IP Address 0 0 0 0 Trap Server IP Address 0 0 0 0 TFTP Server Net Mask 255 255 255 0 Trap Server Net Mask 255 255 255 0 TFTP Server Path blank field Trap Community String public Set time and date blank field Get Community String public Admin IP Address 0 0 0 0 Set Community String private PPP Over ATM PPP Over ATM WAN Configuration PPP Over ATM LAN Configuration Service Name blank field IP Address 192 168 0 1 ATM VPI 0 IP Net Mask 255 255 255 0 ATM VCI 0 DHCP Enabled Login Name blank field Start IP Address 192 168 0 2 Login Password blank field Primary DNS 0 0 0 0 Chap Host blank field Secondary DNS 0 0 0 0 Address Translation Enabled Gateway 192 168 0 1 Address Assignment Dynamic Static NAT Entries priv
30. arranty see Appendix B on page 69 for information about whom to contact PRODUCT CERTIFICATIONS FCC This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with this instruction manual may cause harmful interference to radio communication However there is no guarantee that interference will not occur in a particular installation If this equipment does ca se harmful interference to radio or television reception which can be determined by t rning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected ed Consult the dealer or an experienced radio TV technician for help UL This product meets all safety requirements per UL 1950 standard iv Megabit Modem 500L Installation Manual PRELIMINARY Table of Contents TABLE OF CONTENTS Chapter 1 About The Product 1 F atute ACH
31. ate proxy and remote IP Address 0 0 0 0 IP Addresses 0 0 0 0 User Assignments for PPP WAN Ports 0 Service Name blank field Protocol UDP User s IP Address 0 0 0 0 24 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 4 Setting Up For Configuration Resetting the Modem 4 Note that resetting the modem causes all active connections to drop After you make changes to the modem configuration and write the ch return modem configuration to factory defaults you must reset the a list of changes that you must reset to effect 1 Click System on the Main Menu to access the System M 2 Click Reset Unit on the System Menu Click Proceed to reset the modem Megabit Modem 500L Installation Manual 25 Saving the Configuration PRELIMINARY 26 Megabit Modem 500L Installation Manual CONFIGURING SYSTEM SETTINGS Before configuring sessions with a service provider set up system parameters for the Megabit Modem 500L The following sections show the Web pages you use to configure the TFTP server IP address and network mask for performing functions such as software upgrades on page 28 when required e SNMP parameters page 29 system time and date on page 31 Unless specified otherwise configur tion parameters shown in this section are for example only Megabit Modem 500L Installation Manual 27 Defining TFTP Parameters PRELIMINARY DEFINING TFTP PARAMETERS A TFTP server is a device on the
32. ation Site Wall Mount PRELIMINARY Ensure the minimum dimensions shown in the illustration for spacing LEDs and cabling between modems are met to allow for heat dissipation viewing of front panel Mount the modems a wall using the hardware included in the installation kit _ SS 3 to 4 A 4 85 12 D d 4 85 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 2 What You Need To Start Phone Service If you get phone service all you need is an RJ 11 phone jack to connect your phonesThis lite rate modem provides splitterless capability which allows reception of phone service without special splitters or filters simply connect your phone WHAT YOU NEED FROM YOUR SERVICE PROVIDER Use the worksheets provided in Appendix C on page 73 to tecord your configuration information When you begin to configure the modem in Chapter 4 on page 17 the procedures refer you to the proper table for the configuration information that you recorded This section lists the information you need to configure system settings and sessions for the modem Contact your service provider for this information 1 If using CHAP the CHAP authentication name for each session 2 Session address for Ports 1 through 3 WAN configuration e ATM VPI and ATM VCI specified for each session e when using fixed IP addresses IP address specified for each session by the service provider e Lo
33. ble b If there s another reason for returning the equipment please let us know so we can determine how best to help you 4 Pack the equipment in a shipping carton 5 Write PairGain s address and the Return Material Authorization Number you received from Customer Service clearly on the outside of the carton PairGain Technologies Inc 14352 Franklin Ave Tustin CA 92780 7013 Attention CRF RMA Number Megabit Modem 500L Installation Manual CONFIGURATION WORKSHEETS This chapter provides worksheets where you can record your system settings and system sessions configuration information prior to executing the procedures in Chapter 4 through Chapter 7 The information that you need to configure the modem is listed below Contact your service provider for this information Use the worksheets in this appendix to record your configuration information When you begin configuration of the modem in Chapter 4 the procedures refer you to the proper table so you can use the information you have recorded CONFIGURATION INFORMATION 1 If using CHAP the CHAP authentication name for each session 2 Session address for Ports 1 through 3 WAN configuration e ATM VPI and ATM VCI specified for each session e when using fixed IP addresses IP address specified for each session by the service provider e Login Name and Login Password specified for each session CHAP Host Name Worksheet Configuration Information From
34. e 800 638 0031 714 832 9922 e Fax 714 832 9924 e Email support pairgain com A Customer Service Engineer answers technical assistance calls Monday through Friday between 7 30 AM and 5 30 PM Pacific Time excluding holidays At all other times an on duty Customer Service Engineer returns technical assistance calls within 30 minutes WORLD WIDE VEB PairGain product company and application information can be found at http www pairgain com using any Web browser Megabit Modem 500L Installation Manual 69 Limited Warranty PRELIMINARY LIMITED WARRANTY PairGain Technologies Inc PairGain warrants that for a period of 12 months from the date of shipment the hardware portion of its products will be free of material defects and faulty workmanship under normal use PairGain s obligation under this warranty is limited to replacing or repairing at PairGain s option any such hardware product which is returned during the 12 month warranty period per PairGain s instructions and which product is confirmed by PairGain not to comply with the foregoing warranty PairGain warrants that for a period of 90 days from the date of purchase the software furnished with its products will operate substantially in accordance with the PairGain published specifications and documentation for such software PairGain s entire liability for software that does not comply with the foregoing warranty and is reported to PairGain during the 90 day
35. edure for configuring the Megabit Modem 500L 1 Complete the WAN configuration page 36 It is optional to map a LAN user to each PPP over ATM session at this time You can perform this at a later time see Step 4 after the modem dynamically serves IP addresses to LAN users or you have manually assigned IP addresses to LAN users 2 On the EasySession page a Select the session you want active then click Enable The modem sets up the session with the s rvice provider The Up radio button next to the session s will indicate that the session was successfully set up b When dynamically acquiring an IP address from the service provider the session receives the IP address at this time 3 Set up the side configuration page 39 4 Maptbe IP address for the PC to a session page 38 34 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 6 Configuring Sessions CONFIGURING PPP OVER ATM SESSIONS Point to Point Protocol PPP runs over ATM virtual circuits VCs From the Easy pages configure parameters for communicating between the modem and the servi over the WAN page 36 Then configure parameters for communicating bet the modem page 39 After setting up all appropriate WAN and LAN p ISrveProvideri SrvcProvider2 Megabit Modem 500L Installation Manual 35 Configuring PPP over ATM Sessions PRELIMINARY Configuring the WAN Configure the WAN parameters for PPP over ATM sessions between the
36. egabit Modem 500L Installation Manual PRELIMINARY Appendix A Specifications and Data Connector Pinouts You can make your own cables for the ADSL RJ 11 connector and the 10 100BASE T Ethernet connector on the rear of the modem The following sections provide the pinout information ADSL Port The following table shows the signal on each pin for the ADSL The connector for this interface is an RJ 11 See page 14 for the location of this port Pin Signal 1 Not used 2 No connection 3 Ring 4 Tip 5 No connection 6 Not used 10 100BASE T Port The following table shows the signal on each pin when the switch is in either the MDI or the MDI X position for the 10 100B ASE T port The connector for this interface is an RJ 45 See page 14 for the location of this port MDI MDI X Signal Description 1 3 TX Transmit Data 2 6 TX Transmit Data 3 1 RD Receive Data 4 4 Not used Not used 5 5 Not used Not used 6 2 RD Receive Data 7 7 Not used Not used 8 8 Not used Not used Megabit Modem 500L Installation Manual 67 Hardware PRELIMINARY 68 Megabit Modem 500L Installation Manual TECHNICAL ASSISTANCE AND WARRANTY This chapter describes how to contact PairGain for technical support and warranty service TECHNICAL SUPPORT PairGain Technical Assistance is available 24 hours aday 7 days a week by contacting PairGain s Customer Service Engineering group at one of the following numbers e Telephon
37. er RealPlayer can then tell the server to use a specific UDP port for the UDP connection The user should set up a static NAT entry for the UDP connection for RealPlayer to work properly through NAT UDP is comnectionless wher TCP is connection oriented protocol Both UDP and TCP use protocol port nufnbers to distinguish services and sessions Megabit Modem 500L Installation Manual 27 Management Protocols PRELIMINARY MANAGEMENT PROTOCOLS SNMP is used to configure system parameters to monitor statistics and to perform advanced management tasks SNMP This management protocol specifies how to send information between a network management system NMS and managed devices on a network Managed devices run a program called an agent The agent interprets SNMP requests and responds to them Th NMS communicates with the agents in the managed devices to e set configuration e get configuration e get status A Management Information Base MIB defines the configuration and status parameters The Internet Engineering Task Force IETF specifies standard MIBs for certain types of devices ensuring any NMS can manage them Additionally vendors can issue proprietary MIBs for their devices to fit specific needs Megabit Modem 500L SNMP Agent 58 The Megabit Modem 500L provides an SNMP agent that supports several MIBs for management of the system The SNMP agent can process datagrams received from the Ethernet interface The agent a
38. ess LAN LLC LOF LOS MAC See PAP CHAP A text string required for an SNMP trap to be received by a trap receiver s Also a text string that identifies an SNMP community and is associated with specific access rights read only or read write Cyclic Redundancy Check is a method used to verify the accuracy of data transmission Discrete Multi Tone is a modulation coding for an ADSL line DMT is the modulation technology used for the Megabit Modem 500L ADSL Communications from a service provider to a user The inclusion of data in a protocol header prior to transmission which enables successful data transmission between different protocol networks Errored Seconds is the seconds during which errors occur that prevent the payload from being corrected A protocol used for LAN traffic which has a transfer rate of 10 or 100 Mbps Non volatile memory that can be erased and reprogrammed A device generally a router that provides translation services to allow communication between two dissimilar networks Internet Protocol is a TCP IP protocol that controls packet transmission A 32 bit address used in IP routing The address consists of four octets separated by decimals The octets comprise a network section a subnet section optional and a host section Local Area Network is a physically connected group of devices between which data transmission occurs at high speeds over relatively short distances Logical Link Contr
39. etwork Address and Port Translation Non Volatile Random Access Memory is a medium for storing system configuration information so the information is not lost when the system is reset A TCP IP term indicating eight bits Password Authentication Protocol and Challenge Handshake Authentication Protocol are two ways to authenticate PPP sessions With PAP the modem sends authentication requests to the service provider and authentication occurs only once during the life of the link In CHAP the service provider returns an authentication challenge to the modem during authentication CHAP can be renegotiated during the life of the link Also both the modem and the service provider must support clear text versions of the password The CHAP host field must be the same on both ends of the session Protocol Data Unit is data as it appears at the interface between a particular sublayer and the sublayer immediately below Plain Old Telephone Service Point to Point Protocol exists between the hardware layer and the network layer interface protocols It is a widely used protocol for establishing connections on the Internet PPP provides the set up and release of connections for each session PAP CHAP provide the authentication for the PPP sessions The proxy IP address is the WAN IP address for one of the 32 sessions The proxy IP address is used to enter static NAT entries See IP address Permanent Virtual Circuit is a logical connection compri
40. exing technique that uses 53 byte fixed size cells to transmit voice video and data over a network ATM layers define how cells are formatted and provides the transport of the fixed length cells between the modem and the service provider or endpoints of the virtual connection The dissipation of the power of a transmitted signal as it travels over copper wire measured in decibels dB Security feature offered through PAP and CHAP with PPP sessions Bit Error Rate is a measure of transmission quality The ratio of error bits to the total number of bits transmitted bit per second is the number of bits transferred during each second of data transmission Constant Bit Rate is a Service Class for the modem It provides constant bit rate data with a timing relationship between the source and the destination Also a traffic class that carries a guaranteed constant bandwidth Best suited for applications that require fixed bandwidth such as uncompressed voice video and circuit emulation CBR is a Quality of Service class defined by the ATM Forum for ATM networks A fixed length packet Also the unit of data transmission used in ATM Each ATM cell contains a fixed size frame 53 bytes consisting of a five byte header and a 48 byte payload Megabit Modem 500L Installation Manual 75 PRELIMINARY 76 CHAP community string CRC DMT downstream traffic encapsulation ES Ethernet flash memory gateway IP IP addr
41. gin Name and Login Password specified for each session For more information about the configuration choices listed above see Chapter 9 on page 55 CHOOSE A POWER CABLE The Megabit Modem 500L is available with a variety of power supplies and power cords When you order your modem choose one of the following as the last number in the product part n mber 150 2120 7x for your order to indicate which power option you need e indicates a power supply for International use and does not include a power cord e 3 indicates a power supply for North American use and includes a North American power cord e 4indicates a Universal power supply and includes a European power cord e indicates a Universal power supply and includes a UK Ireland power cord Megabit Modem 500L Installation Manual 9 Choose a Power Cable PRELIMINARY 10 Megabit Modem 500L Installation Manual INSTALLING THE MODEM The Megabit Modem 500L is easy to install by attaching adhesive backed feet setting the MDI MDI X switch connecting a cable from the modem to a PC or an Ethernet hub for LAN service connecting a phone cord from the modem to a wall phone jack for DMT ADSL Internet or other WAN application service connecting a power cable to a local power outlet Perform the installation on thefollowing pages see Location for Modem Installation on page 6 to determine where to place modems Use the installation kit parts listed below in the installa
42. iguring PPP over ATM 36 interface specifications 61 viewing statistics 50 warranty 69 web browser configuration 19 worksheets 73 login 74 VCI 74 VPI 74 www pairgain com 69 Megabit Modem 500L Installation Manual 87 PRELIMINARY 88 Megabit Modem 500L Installation Manual Corporate Office 14402 Franklin Avenue Tustin CA 92780 Tel 714 832 9922 Fax 714 832 9924 For Technical Assistance 800 638 0031 425 020 150 01P
43. ing the Time and Date PRELIMINARY 32 Megabit Modem 500L Installation Manual CONFIGURING SESSIONS You configure sessions between the modem and a service provider using the PairGain EasySession pages The Megabit Modem 500L supports one PPProver ATM session at a time There are many options from which to select when configuring sessions See Selecting a Configuration Model on page 34 to determine the asiest and most efficient way for you to set up your session After you determine the configuration model set up the connection between the modem and the service provider WAN and the connection between your network users and the modem LAN Go to page 35 to configure the WAN and to page 39 to configure the LAN Then activate sessions in the section Activating and De Activating Sessions on page 43 Megabit Modem 500L Installation Manual 33 Selecting a Configuration Model PRELIMINARY SELECTING A CONFIGURATION MODEL There are many configuration options for the Megabit Modem 500L from which you can select Select the following options are recommended for enhanced performance e DHCP not selected to allow the user to manually enter an IP address to the PC e NAT to map the public IP addresses proxy IP addresses acquired from the service provider to the PC IP address The following matrix shows the recommended configuration How WAN IP Address DHCP NAT Acquired On On Fixed The following is a recommended proc
44. k System on the Main Menu to access the System Menu 2 Click Upgrade Software on the System Menu then click Proceed The modem upgrade for binary files bin automatically begins This action will upgrade the unit s software via TFTP To Proceed with this option will cause all active connections to drop and the modem to reset Are you sure you want to proceed Click Home to return to the Main Menu 52 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 8 Maintenance and Troubleshooting TROUBLESHOOTING If this occurs Try this PC or hub not e Check the LINK LED If it is off check the cabling to the 10 100BASE T port and to the communicating hub or the NIC card in the PC to ensure it is secure with the modem iui e Check the position the MDI MDI X switch Set the switch to MDI when connecting to a PC Set the switch to MDI X when connecting to a hub or router e Check that you are using a Web browser Netscape or Internet Explorer version 4 0 or newer e Check that you have a TCP IP protocol stack installed on your PC e If this is the initial installation check that you set the IP address on your PC to obtain an IP address automatically See Setting Up the PC to Request an IP Address on page 18 e Check the NIC card installation for correct IRQ drivers and adapter setup See appropriate documentation for the NIC card If none of the above corrects your problem contact your service provider SYNC A
45. maximum line rate of 17 812 cells per second downstream and 2 189 cells per second upstream Cell Format Format complies with ITU 1 361 ATM cell format Cell delineation complies with ITU 1 432 Cell Delineation and HEC Cells are fixed length 53 bytes including 5 bytes of header and 48 bytes of payload Included in the header are the VPI and VCI number Virtual Circuit type Permanent Virtual Circuit PVC per ATM forum UNI version 3 1 Maximum Virtual Circuits Three virtual circuits with one that is actively connected to a service provider encapsulated as PPP Megabit Modem 500L Installation Manual 61 PPP over ATM PRELIMINARY PPP OVER ATM You can configure each of the three sessions with the following parameters Link Control Protocol Provides a phase of the PPP negotiation by setting up the physicalelink RFC 1661 LCP Network Control Occurs after LCP negotiating parameters for each networkinterface and uses Protocol NCP Internet Protocol Control Protocol IPCP which is defined in 1332 Authentication Provides authentication of PPP sessions for security through Password and PAP CHAP Challenge Handshake Authentication Protocols RFC 1994 Network Address Network Address Port Translation maps a LAN sideprivate IP address to Translation the public IP address assigned to one of the three virtual channels RFC 1631 LAN INTERFACE Connector 45 Ethernet with auto detecting10 100BASE T IEEE 802
46. mple Network Management Protocol is a protocol that specifies how to send information between a NMS and managed devices on a network The managed devices run a program called an agent The agent interprets SNMP request and responds to them SNMP is used to set device configurations read device configurations or read the device status A bridging protocol that detects and prevents loops from occurring in a system containing multiple bridges A type of IP address that allows a site to use a single IP address for multiple physical networks Transmission Control Protocol is a transport protocol used to map inbound traffic from a remote IP address to an internal LAN IP address Establishes connection with remote user before data transmission Transmission Control Protocol Internet Protocol is a protocol used for communications between computers over networks and the internet Trivial File Transfer Protocol is a protocol used to download card images or other files from an external TFTP server to the NVRAM of any installed cards or to upload files from an installed card to an external TFTP server PCs configured to receive SNMP traps messages Autonomous interrupt driven SNMP messages sent from a managed node to a network management station to indicate that an event has occurred UnAvailable Seconds is the number of seconds during which the line is unavailable Megabit Modem 500L Installation Manual PRELIMINARY UBR UDP upst
47. ndthe protocol stack complies with the following Request for Comments RFCs e 1155 Structure of Management Information SMI 1157 Simple Network Management Protocol SNMP e 826 Address Resolution Protocol ARP e 792 Internet Control Message Protocol ICMP RFC 791 Internet Protocol IP e RFC 768 User Datagram Protocol UDP Megabit Modem 500L Installation Manual PRELIMINARY Chapter 9 Technical Reference MIB and Trap Support Each managed device has configuration status and statistical information that defines its functionality and operational capabilities These elements make up the MIB for the device being managed The MIB defines the kind of information an NMS can retrieve from a managed device and the settings an NMS can control in a managed device Megabit Modem 500L supports the following MIBs e RFC 1213 Management Information Base for Network Management of TCP IP Based Internet MIB II Supported groups system interfaces IP ICMP UDP and SNMP groups e 1215 Convention for Defining Traps for Use with the SNMP Supported groups ColdStart linkUp linkDown and authenticationFailure traps Link status traps are sent for events related to Ethernet e ADSL MIB e ATM MIB e PairGain Agent MIB e PairGain Tiger MIB DNS RESOLUTION If you want Domain Name System DNS resolution you need to specify the IP address for a device to be the DNS resolver You can
48. nment parameters 38 user assignments 37 38 deleting PPPoATM WAN session 37 descriptions LOBASE T 75 ADSL 55 75 ATM 56 75 DMT 55 76 downstream 76 MAC 76 modem 1 NAPT 57 NAT 77 PAP CHAP 57 power cable 9 subnet mask 78 TFTP 78 upstream 79 DMT ADSL 55 DMT description 55 76 DNS resolution 59 Megabit Modem 500L Installation Manual PRELIMINARY downstream description 76 transmission rate 1 55 dynamic host configuration protocol See DHCP E encapsulation methods PPP 2 56 F factory defaults values 23 features applications 3 downstream transmission rate 2 modem 2 Overview 2 protocols 2 technology 2 transmission speeds 2 upstream transmission rate 2 flat surface mounting 7 installation cable types 11 introduction 1 kit 66 phone service 9 requirements 5 Megabit Modem 500L Installation Manual Elndex installing the modem 11 attaching feet 12 cabling 14 flat surface mounting 7 setting MDI MDI X switch 13 wall mounting 8 L LAN configuring PPP over ATM 39 interface specifications 62 viewing statistics 48 LED indications 15 limited warranty 70 login configuration worksheet 74 M MAC description 76 main menu ADSL 45 easysession 35 37 information 20 statistics 48 MDI MDI X switch 13 MIB and trap support 59 MIBs 64 83 modem adaption rate 53 applications 3 attaching feet 12 configuration process 17 description 1 features 2 flat surface mounting 7 i
49. nsmission occurs over a single pair telephone line The following sections describe these technologies ADSL Asymmetric Digital Subscriber Line ADSL is the technology used to transmit data between the modem and service provider at the physical layer It provides data at asymmetric rates so that downstream traffic from a service provider to you is faster than upstream traffic from you to the service provider The downstream transmission rate is up to 7 552 Mbps while the upstreani rate is up to 928 kbps Analog POTS can coexist with ADSL on the same line Discrete Multitone DMT is the line coding used for ADSL Basically it divides the bandwidth into subchannels Some of the subchannels are reserved for analog POTS The other subchannels are allocated to upstream and downstream traffic Within the upstream and downstream subchannels some subchannels are used for management and performance functions DMT ADSL provides rate adaptive transmission that allows the service provider to deliver you the best transmission rate determined by distance and line conditions Megabit Modem 500L Installation Manual II PPP PRELIMINARY ATM Asynchronous Transfer Mode ATM is a technology that can simultaneously transmit voice data and video over ADSL ATM uses fixed size cells that transmit over a preestablished connection called a Permanent Virtual Circuit PVC Quality of Services can also be specified ATM cells are 53 bytes that comprise a 5 b
50. nstallation 11 obtaining IP Address automatically 18 overview 1 resetting 25 resetting to factory defaults default values 23 setting MDI MDI X switch 13 storage 5 technology 1 transmission speeds 1 unpacking 5 user assignments 38 wall mountingg8 modem feet connecting 12 mounting clearances 7 8 flat surface 7 wall 8 84 PRELIMINARY N NAT description 40 57 77 table parameters 40 network address port translation See NAPT network statistics 48 panel back 13 14 PAP CHAP authentication security 57 description 57 parameters NAT table 40 SNMP 29 TFTP 28 user assignment 38 PC configuring 18 phone service connecting 16 installing 9 requirements 9 pinouts 67 point to point protocol See PPP and PPP over ATM power cable 9 PPP 2 56 Megabit Modem 500L Installation Manual PRELIMINARY PPP over ATM activating sessions 43 configuring LAN 39 WAN 36 de activating sessions 44 sessions 56 57 configuring 35 PPPoATM deleting session 37 product overview 1 protocols 2 NAPT 37 57 PPP 35 SNMP 58 R rate vs reach 65 request for comments 58 requirements cables 11 installation 5 phone service 9 power cable 9 service provider 9 site 6 system 6 reset unit 25 resetting modem 25 RFCs 58 64 Megabit Modem 500L Installation Manual S saving a configuration 21 42 service ADSL 15 service provider configuration 9 requirements 9 sessions activating PPP over ATM sessi
51. o the following to define Users Assignments Enter the Service Name you entered for the session shown in field Ojon page 36 Enter the User s IP Address for the LAN side user that you assign to this session If the PC is mapped to one of the other two sessions you must remove it from that session to map it to this session Displays the Service Name and User s IP Address for the configured session Users Assignment Service Name User s IP Address H rverrovideri 0 Done Add Delete Maximum Number of User Assignments Allowed 1 Service Name User s IP Address 2 2 lt Click Add to accept a user assignment you entered in Step 1 Delete a user assignment as follows 1 Highlightthe user assignment listed in see figure above then click Delete When you highlight the user assignment it automatically displays in the Service Name and User s IP Address fields 2 After adding or deleting all user assignments click Done to return to the EasySession page 38 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 6 Configuring Sessions Configuring the LAN 1 Click EasySession on the Main Menu to access the EasySession page 2 Atthe top of the EasySession page click Edit next to LAN Configuration to display PPP Over ATM LAN Configuration page 3 Do the following to configure the LAN Q Enter the IP Address and IP Net Mask subnet mask f
52. ol is an encapsulation protocol for data that you transmit from the modem over the WAN in 1483 Bridging Routing mode Loss Of Frame is an error indicating that the receiving equipment has lost a frame Loss Of Signal is an error indicating that the receiving equipment has lost the signal Media Access Control is a physical address associated with a device such as a NIC For modem configuration the MAC is used to map inbound traffic from a remote IP address to an internal LAN IP address Used with 1483 Bridging Routing Mode Megabit Modem 500L Installation Manual PRELIMINARY margin MIB NAT NVRAM octet PAP CHAP PDU POTS PPP proxy IP address PVC QoS Appendix D Glossary The noise margin in decibels that the modem must achieve with a BER of 10 7 or better to successfully complete initialization Management Information Base is a set of variables that define the configuration and status parameters for network management Network management stations can retrieve information from and write information to an MIB The Internet Engineering Task Force IETF specifies standard MIBS for certain types of devices ensuring any MMS can manage the devices Vendors can specify proprietary MIBs for their devices to fit specific needs Network Address Translation provides the means to map private IP addresses to the public IP addresses proxy addresses that are set up for the PPP sessions Used with PPP Mode NAPT is N
53. ons 43 configuring 33 de activating PPP over ATM 44 simple network management protocol See SNMP site requirements 6 SNMP agent 58 parameters defining 29 protocol 58 software upgrading 51 specifications 61 ADSL 61 ATM 61 environmental 63 LAN interface 62 physical 62 power 63 WAN interface 61 static NAT table parameters 40 85 Static NAT entry add 42 delete 42 statistics 45 statistics menu LAN statistics 48 WAN statistics 50 storage 5 subnet mask description 78 support MIB and trap 59 system configuring settings 27 requirements 6 troubleshooting 53 system menu factory default 23 reset unit 25 set date amp time 31 SNMP parameters 29 TFTP parameters 28 update configuration 22 upgrade software 51 T technical support 69 technical specifications 61 86 PRELIMINARY TFTP description 78 parameters defining 28 server 59 time and date 31 transmission rate downstream 1 55 upstream 1 55 trivial file transfer protocol See troubleshooting 53 U unpacking modem 5 update configuration 22 upgrading software 51 upstream description 79 transmission rate 1 55 user assignments 37 38 V VCI addresses 56 configuration worksheet 74 viewing ADSL status 45 47 LAN statistics 48 network statistics 48 WAN statistics 50 Megabit Modem 500L Installation Manual PRELIMINARY Elndex VPI addresses 56 configuration worksheet 74 W wall mounting 8 WAN conf
54. or the m 10 100BASE T LAN port The IP address will not take effect modem is reset Select DHCP Enable if you want to enable the modem automatically assign IP addresses to devices on the L ensure that all devices on the LAN have the AIP automatically see page 18 erver to le DHCP Obtain an IP address 1 0 0 0 0 192 168 30 21 192 168 30 22 Static Nat Table 0000 Megabit Modem 500L Installation Manual 39 40 Configuring PPP over ATM Sessions PRELIMINARY The modem automatically assigns the Start IP Address for the first device on the LAN as one address higher than the Ethernet port on the modem when DHCP is enabled You cannot edit this field Enter the IP address for a device that will be the Primary DNS The primary Domain Name System DNS device translates human readable machine names into IP addresses See page 59 for more information on DNS resolution Enter the IP address for a device that will be the Secondary DNS The DNS device translates human readable machine names into IP addresses See page 59 for more information on DNS resolution The modem automatically enters the Gateway IP address which is the same IP address as the LAN Ethernet 10 100BASE T port of the modem You cannot edit this field Click Static NAT Table to open a dialog in which you can map inbound Internet traffic to specific sessions Go to the section on Defining Static NAT Entries on page 41 to
55. parameters e configuring sessions between the modem and a service provider monitoring and troubleshooting the modem Chapter 9 provides a reference for technology implemented in the Megabit Modem 500L The chapter covers information about ATM over ADSL transmission PPP over ATM operating mode and SNMP management IP addresses used in this manual are for example only You will acquire your own addresses from the service provider and your information services coordinator to configure the Megabit Modem 500L However you must use the IP address specified in Accessing Megabit Modem 500L Web Pages on page 20 to access the Megabit Modem 500L from a Web browser DOCUMENT CONVENTIONS Two types of messages identified by icons appear in the text Notes contain information about special circumstances S Cautions indicate the possibility of equipment damage or the possibility of AN personal injury Megabit Modem 500L Installation Manual iii Suggestions and Corrections to this Manual PRELIMINARY SUGGESTIONS AND CORRECTIONS TO THIS MANUAL Your comments help us prepare better user documentation If you have comments about this manual send an email containing the comment s page reference and any other pertinent information to technical_publications pairgain com In the email subject area provide the product name and the name and date of the document about which you are commenting If you have questions about the product or w
56. port number If you do not have the information for the remote user and port enter 0 0 0 0 for the Remote IP Address and or 0 for the Port Address Select a Protocol UDP or TCP for the transport used between the LAN and the remote user for this static NAT entry See NAT on page 57 for more information about the transport protocols O This field lists the IP Address Port and Protocol for the Private Proxy and Remote fields defined You can have up to 32 static entries Click Add to accept the Static NAT Entry Repeat Step 1 and Step 2 to add up to 32 static NAT entries To delete a Static NAT Entry highlight the entry in field then click Delete A WwW N Click Done to return to the PPP over ATM LAN Configuration page SAVING THE CONFIGURATION Although you have submitted new settings the parameters are not permanent until you write them to NVRAM See Saving the Configuration on page 21 to save the WAN and LAN configurations to NVRAM 42 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 6 Configuring Sessions ACTIVATING AND DEACTIVATING SESSIONS After you configure sessions you will activate sessions as you want to use them A you may want to deactivate some sessions while leaving other sessions active procedure shows you how to activate and deactivate sessions Also if you p modem with sessions enabled those same sessions will be enabled whe the modem Activating Sessions
57. re the modem launch a Web browser on your PC and load the Megabit Modem Configuration and Management Tool Web pages that guide you through configuration Use the Web page called EasySession M to configure up to 3 Internet or other WAN sessions with service providers you can activate only one session at a time You can also configure other system parameters and monitor ADSL LAN and other networking functions using the Web pages DSLview LEDs on the modem front panel provide continual status at a glance for network and modem connections Megabit Modem 500L Installation Manual 1 Features PRELIMINARY FEATURES The Megabit Modem 500L provides e rate adaptable ADSL transmission downstream at up to 1 5 Mbps and upstream at up to 512 kbps e Internet or other types of WAN applications and phone service over your existing phone line e Point to Point Protocol PPP encapsulation method e Password and Challenge Handshake Authentication Protocols PAP CHAP for authentication of PPP sessions e Network Address Translation NAT protocol to map the user to the PPP session e Dynamic Host Configuration Protocol DHCP server to provide network configuration information including IP addresses to LAN devices e TFTP to download software e AccessGain M software to provide access through an HTTP server to configure manage and monitor the modem through a Web based interface e SNMP agent for management through any industry standard SNMP
58. rea Network rs r rer rr rn en 55 tea A 55 ATM eee en eec A 56 PPP gt lt 56 PAP CHAP Authentication Security ilo 57 finirla 7 amd 57 Management Protocols see a 58 SNMP ederet eee ee 58 Megabit Modem 500L SNMP Agent 58 MIB and Trap Support 4 56 59 DNS Resolution 44 909 59 TFTP Server Re 59 Appendix A Specifications and Data 61 WAN Interface Specificare Di 61 Encapsulation C e 62 LAN Interface RA Nee eerte aero 62 Physical 5 Min 62 KA a T 63 Qu EM AEN 63 um 63 64 EA i e io ini 64 FREGIO de Rte rer EE ERE URS 65 Hardware actin iaia neh RU weal Ge 66 Inst llatiofi Kit 5 0 tee 66 Connector ets 67 Megabit Modem 500L Installation Manual vii Table of Contents viii Appendix B Technical Assistance and Warranty Technical Support rtr e tette ctt tienes WorldWide dai RA Limited Warranty iei aaa oO Advance Replacement enn rna iano alata arie Returning a Produc
59. ream traffic VCI VCMUX VCs VPI VPs WAN Appendix D Glossary Unspecified Bit Rate is an ATM traffic type used for LAN traffic When network congestion occurs the data is stored in a buffer until it can be sent User Datagram Protocol is a transport protocol used to map inbound traffic from a remote IP address to an internal LAN IP address Uses a protocol port number for the destination at the remote location Communications from a user to a service provider Virtual Channel Identifier is a 16 bit field addressing identifier in the header of an ATM cell used to route cell traffic It identifies a particular VC link for a given VP Virtual Channel Multiplexer based encapsulation used for networks with large numbers of virtual channels making it practical to carry a single protocol per virtual channel Virtual Circuits are logical connections in the ATM network over which ATM cells are transmitted Virtual Path Identifier is an 8 bit field addressing identifier in the header of an ATM cell that is used to route cell traffic It identifies a particular VP link Virtual Paths are groups of VCs carried between two points The VP provides a means of bundling traffic traveling in the same direction VPs are defined by a unique VPI value Wide Area Network is a network consisting of nodes located across a large geographical area Also the connection between a service provider and Megabit 700F Modem Megabit Modem 500
60. s subject to a 70 per unit no trouble found NTF charge in the event that diagnostic evaluation reveals no evidence of functional failure or physical defects Megabit Modem 500L Installation Manual 71 Returning a Product PRELIMINARY RETURNING A PRODUCT 72 To return equipment to PairGain 1 Locate the number of the purchase order under which the equipment was purchased You will need to provide this number to PairGain Customer Service to obtain a return authorization Call or write PairGain Customer Service to ask for a Return Material Authorization RMA number and any additional instructions Use the telephone or fax number listed below e Telephone 714 730 2800 Fax 714 730 2961 Include the following information in writing along with the equipment you re returning e Your company name address and the a person PairGain can contact regarding this equipment e same purchase order number you gave to Customer Service when you requested an RMA number e description of the equipment as well as the number of units you re returning to us Be sure to include the model and part number of each unit e shipping address to which PairGain should return the repaired equipment e The reason for your return a equipment is defective If the equipment is defective please tell us what you observed just before the H equipment malfunctioned Be as detailed in your description as possi
61. sed of a predefined static route across a packet switched network that is always in place and always available Quality of Service is the configured traffic parameters that are assigned to a virtual circuit which specifies how quickly and how accurately data is transferred from the sender to the receiver Megabit Modem 500L Installation Manual 77 78 RFC RIP SEF SES session SNMP Spanning Tree subnet mask TCP TCP IP TFTP trap receivers traps UAS PRELIMINARY Request For Commentis a series of notes that contain surveys measurements ideas techniques and observations as well as proposed and accepted TCP IP protocol standards RFCs are available on the Internet Routing Information Protocol allows routers to update the routing tables automatically for example with information such as how many hops between destinations The version of RIP you select for the session must match the version supported by the service provider Versions RIP1 and RIP 1 compatible are used for broadcast Version RIP 2 is used for multicast Severely Errored Frames is the incoming signal has at least four consecutive errored framing patterns Severely Errored Seconds is the seconds during which more than 2 500 bipolar errors are detected on the line The time during which two computers maintain a communication connection An example is a connection configured between the Megabit Modem 500L and the service provider Si
62. shown at right 2 Inthe Network dialog shown below double click TCP IP under the m Configuration tab or highlight TCP IP then click Properties On the IP Address tab select Obtain an IP address automatically then click OK 4 Restart the PC Network 21x Configuration Identification The following network components are installed IPX 32 bit Protocol for the Novell NetWare Client gt Intel E amp IPX 32 bit Protocol for the Novell NetWare Client gt Novel 7 IPX SPX compatible Protocol gt Intel EtherExpress PRO IPX SPX compatible Protocol gt Novell ODINSUP TCP IP Properties 2 x Bindings Advanced NetBlOS DNS Configuration Gateway WINS Configuration IP Address An IP address can be automatically assigned to this computer If your network does not automatically assign IP addresses ask your network administrator for an address and then type itin the space below Properties Add Remove Primary Network Logon Novell Netware Client Eile and Print Sharing Description TCP IP is the protocol you use to connect to the Internet and wide area networks C Specify an IP address Megabit Modem 500L Installation Manual PRELIMINARY Chapter 4 Setting Up For Configuration CONFIGURING A WEB BROWSER You access the Megabit Modem 500L Web pages through a Web browser see pag Web browser versions supported The Web browser
63. t cine ala iaia Appendix C Configuration Worksheets PRELIMINARY Configuration Information i Appendix D Glossary Appendix E Index Megabit Modem 500L Installation Manual ABOUT THE PRODUCT You have purchased the PairGain Megabit Modem 500L that connects your Ethernet LAN to service providers for instant and high speed access to the Internet or to other types of Wide Area Network WAN applications The modem provides this service over a single pair telephone line with downstream ADSL transmission up to 1 5 Mbps The upstream ADSL transmission is up to 512 kbps You can also receive telephone service over the same single pair line as your data The Megabit Modem 500L uses ATM over DMT ADSL technology to provide this high speed transmission between the modem and the service provider Asynchronous Transfer Mode ATM provides transmission of fixed size cells over preestablished connections The Asymmetric Digital Subscriber Eine ADSL provides rate adaptive transmission which means the service provider can deliver the best possible transmission rate to you based on distance and line conditions The Megabit Modem 500L is easy to install and configure To install the modem you e connect a telephone cable from the modem to a wall phone jack for ADSL service e connect cable from the modem to a PC or an Ethernet hub for LAN service e connect a power cable to a local power source To configu
64. tion procedures Part Function Rubber adhesive backed Attaches to the base of the modem feet four Black cable Connects the modem 10 100BASE T connector to the LAN through a hub or to a PC NIC Grey cord Connects the modem ADSL connector to the RJ 11 wall jack with DMT ADSL service Power cable Connects the modem Power connector to the local power source Power supply optionally has a power cord See Choose a Power Cable on page 9 for selection options Megabit Modem 500L Installation Manual 11 Attaching the Feet PRELIMINARY ATTACHING THE FEET Attach each of the four adhesive backed rubber feet to a footprint recess on the bottom of the modem Rubber feet gt 12 Megabit Modem 500L Installation Manual PRELIMINARY Chapter 3 Installing the Modem SETTING THE MDI MDI X SWITCH Using the MDI MDI X switch the Megabit Modem 500L can communicate with a device on the LAN that is either MDI or MDI X without having to change the cable a straight through cable is supplied with the installation kit Set the switch for the 10 100BASE T port to either e MDI X when you are connecting to a device with an MDI port such as a PC with an Ethernet NIC e MDI when you are connecting to a device with an MDI X port such as a hub repeater bridge or router For connection to devices such as MDI X For connection to devices such as MDI a Hub Lr MDI MDI X 10BASE
65. tting data to devices on the LAN Off Modem is not transmitting data to the LAN RX Flashing green Modem is receiving data from devices on the LAN Off Modem is not receiving data from the LAN ADSL SYNC On green ADSL transceiver is synchronized and in normal operation mode Flashing green ADSL transceiver is in a start up sequence Off ADSL transceiver is not synchronized or is in a mode other than normal operation or start up TX Flashing green Modem is transmitting data to the service provider Off Modem is not transmitting data to the service provider RX Flashing green Modem is receiving data from the service provider Off Modem is not receiving data from the service provider MAR On green ADSL margin is at or above the value set by the service provider Off ADSL margin is below the value set by the service provider OH On yellow Telephone receiver is off hook Off Telephone receiver is on hook Megabit Modem 500L Installation Manual 15 Connecting Phone Service PRELIMINARY IPAIRGAIN MEGABIT MODEM 500L AN LINK TX RX SYNC TX MAR OH o oO o Status LEDs CONNECTING PHONE SERVICE If you get phone service all you need is an RJ 11 phone jack to connect your phone This lite rate modem provides splitterless capability which allows reception of phone service without special splitters or filters simply connect your phone 16 Megabit Modem 500L Installation Manual SETTING UP FOR CONFIGURATION
66. warranty period is at PairGain s option either a return of the price paid or b repair or replace of the software PairGain also warrants that for a period of 30 days from the date of purchase the media on which software is stored will be free from material defects under normal use PairGain will replace defective media at no charge if it is returned to PairGain during the 30 day warranty period along with proof of the date of shipment The transportation charges for shipment of returned products to PairGain will be prepaid by the Buyer PairGain will pay transportation charges for shipment of replacement products to Buyer unless no trouble is found NTF in Which case the Buyer will pay transportation charges PairGain may use reconditioned parts for such repair or replacement This warranty does not apply to any product which has been repaired worked upon or altered by persons not authorized by PairGain or in PairGain s sole judgment has subjected to misuse accident fire or other casualty or operation beyond its design range The warranty for repaired products shall remain in effect until the end of the original warranty period PAIRGAIN DISCLAIMS AEL OTHER WARRANTIES EITHER EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO ITS PRODUCTS AND ANY ACCOMPANYING WRITTEN MATERIALS FURTHER PAIRGAIN DOES NOT WARRANT THAT SOFTWARE WILL BE FREE FROM B
67. yte header and 48 byte payload The header includes the Virtual Path Identifier VPI and Virtual Channel Identifier VCI that you entered when you configured each session in Chapter 4 The VPI and VCI provide the virtual connection between the modem and the service provider The VPI identifies the Virtual Path VP that transports ATM cells in a Virtual Channel VC The Megabit Modem 500L has three VCs in the VP which provide the three sessions for the Internet or for other WANfapplications You can however activate only one session at a time Mapping an ATM Session Your service provider will give you a VCI and VPI address for each session The VCI address for each session each session is a VC can be a number up to a maximum of 255 32 to 255 with the first 32 numbers 0 through 31 reserved The VCI value for each VC must be unique for each of the three sessions The VPI value must always be 0 PPP PPP runs over ATM virtual circuits PPP exists between the hardware layer and the network layer interface protocols It is a widely used protocol for establishing connections on the Internet PPP provides the set up and release of connections for each session PAP CHAP provide the authentication for the PPP sessions You can configure three sessions but only one session can be established between the service provider and the modem at a time The user is mapped to the session that is active 56 Megabit Modem 500L Installation Manual

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