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Cisco Systems 1760 Network Router User Manual

1. 22635 The dial peer command always takes the argument voice The number following it is the dial peer tag and pots is the type of dial peer Cisco IOS software refers to a telephone number as a destination pattern because it is the destination for an incoming or outgoing call Enter these numbers with the destination pattern command A destination pattern can include asterisks and pound signs from the telephone keypad and commas and periods which have special meanings Parentheses hyphens slashes and spaces which are often used to make telephone numbers easier for humans to read are not allowed Notice that the commands in the examples puts the prefix 1 used in the United States to indicate a long distance number and an area code in front of the remaining numbers to complete the destination pattern You need to include similar codes for your country if the VoIP equipment needs to establish a connection to the Public Switched Telephone Network PSTN Note The Cisco IOS software does not check the validity of the telephone number It accepts any string of permitted characters as a valid number The business that owns the West router also has a branch office called East Figure 14 shows the East office network and Table 4 lists the phone numbers voice ports and dial peer tags for this office Figure 14 Basic Voice Network East Router 919 555 8282 FXS VIC FXS VIC 1 1 22333
2. 919 555 9595 19 Table 4 East Router Local Dial Peers Telephone Number Destination Pattern Voice Port Dial Peer Tag 919 555 8282 19195558282 1 0 901 919 555 9595 19195559595 1 1 902 Enter the following commands to configure the local ports on the East router with the dial peer information in Table 4 East config dial peer voice 901 pots East config dial peer destination pattern 19195558282 East config dial peer port 1 0 East config dial peer voice 902 pots East config dial peer destination pattern 19195559595 East config dial peer port 1 1 East config dial peer exit East config These commands are summarized in Figure 15 Figure 15 East Router Configured for Local Dial Peers dial peer voice 901 pots destination pattern 19195558282 port 1 0 FXS VIC FXS VIC 1 1 dial peer voice 902 pots 4 destination pattern 19195559595 Sma X port 1 1 Checking the Local Dial Peer Configuration If you configured POTS dial peers on your router by following these examples you can place calls between telephones connected to the same router You can also use the show dial peer voice command to verify that the data that you configured is correct AS Note If the voice port is off line use the interface configuration no shutdown command at the config voice port prompt to enable it Calling Between Routers To enable the West and East offices to send voice
3. A Caution Power must be removed from the system prior to installing or removing WICs or VICs to avoid damaging them When WICs or VICs are pushed into or pulled out of a router that is powered up there is a very good chance that they could be damaged electrically and will no longer function Step 2 Loosen the thumbscrews on the WIC or VIC slot cover as shown in Figure 5 Figure 5 Removing a WIC or VIC Slot Cover 60950 You should be able to loosen the screws using your fingers however if the screws are very tight you may need to use a Phillips screwdriver Step3 Remove the metal plate that covers the card slot Step4 Hold the card by the edges on either side of the card front panel and line up the card edges with the guides inside the card slot as shown in Figure 6 Figure 6 Inserting a WIC or VIC in the Router 60949 1 Interface Card 2 Guides Step5 Insert the card in the slot and gently push it into the router until the front panel of the card is flush with the router AS Note Slots 2 and 3 accept VICs only These slots have a small metal tab on the right side that interferes with a similar tab on WICs preventing the insertion of WICs by mistake Step6 Tighten the screws that are on the card Voice Port Verification When the router is connected to a PC and you are running the command line interface as described in the Connect a PC to the Router Console Port section you can enter the s
4. means that the dial peer associates a physical voice port with a local telephone device Voice over IP or VoIP dial peers are explained in the Calling Between Routers section on page 20 Table 3 West Router Local Dial Peers Telephone Number Voice Port Dial Peer Tag 408 555 3737 0 0 401 408 555 4141 0 1 402 You should construct a table similar to Table 3 for your own routers assigning your own telephone numbers and dial peer tags Note The telephone numbers used in this guide are only examples and are invalid for public use in the United States When you configure your network be sure to substitute your own telephone numbers To configure the router with the dial peer information in Table 3 enter the following global configuration commands west gt enable Password West configure terminal West config dial peer voice 401 pots West config dial peer destination pattern 14085553737 West config dial peer port 0 0 West config dial peer voice 402 pots West config dial peer destination pattern 14085554141 West config dial peer port 0 1 West config dial peer exit f ch 18 West config These commands are summarized in Figure 13 Figure 13 West Router Configured for Local Dial Peers dial peer voice 401 pots destination pattern 14085553737 port 0 0 FXS VIC 0 0 FXS VIC 0 1 dial peer voice 402 pots destination pattern 14085554141 port 0 1 y
5. section on page 34 On a relatively low bandwidth connection such as a PPP or High Level Data Link Control HDLC serial link you should consider using methods to ensure QoS If you have a high bandwidth network such as Ethernet or Fast Ethernet and voice and data traffic together occupy only a small fraction of the bandwidth available you might not need to provide QoS mechanisms See Figure 24 31 Figure 24 Bandwidth Versus Quality of Service Low bandwidth g cas needs QoS a Se High bandwidth might not need QoS IP Precedence Use the ip precedence command to give voice packets a higher priority than other IP data traffic Every IP packet is given a precedence level the numbers 1 through 5 identify classes for IP flows the numbers 6 through 7 are used for network and backbone routing and updates You can configure voice packets for higher priority by setting the IP precedence value to 5 Internal routers using weighted fair queuing give these packets priority This command applies only to VoIP dial peers The following example sets the IP precedence to S Router gt enable Password Router configure terminal Router config dial peer voice 221 voip Router config dial peer ip precedence 5 Use the ip precedence command if RSVP is not enabled and if you would like to give voice packets a higher priority than other IP data traffic Low Latency Queuing Low latency queuing LLQ provides a low lat
6. DVD Cisco documentation and additional literature are available in a Documentation DVD package which may have shipped with your product The Documentation DVD is updated regularly and may be more current than printed documentation The Documentation DVD package is available as a single unit Registered Cisco com users Cisco direct customers can order a Cisco Documentation DVD product number DOC DOCDVD from the Ordering tool or Cisco Marketplace Cisco Ordering tool http www cisco com en US partner ordering Cisco Marketplace http www cisco com go marketplace Ordering Documentation You can find instructions for ordering documentation at this URL http www cisco com univercd cc td doc es_inpck pdi htm You can order Cisco documentation in these ways e Registered Cisco com users Cisco direct customers can order Cisco product documentation from the Ordering tool http www cisco com en US partner ordering e Nonregistered Cisco com users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters California USA at 408 526 7208 or elsewhere in North America by calling 1 800 553 NETS 6387 12 Documentation Feedback You can send comments about technical documentation to bug doc cisco com You can submit comments by using the response card if present behind the front cover of your document or by writing to the following address Cisco Systems Attn Customer Do
7. Protocol Header Compression section on page 33 The following command configures RTP header compression on the selected subinterface Router config if frame relay ip rtp header compression e Traffic shaping Use traffic shaping to control the outbound traffic rate otherwise voice packets can be discarded In Cisco IOS Release 12 0T Frame Relay traffic shaping is not compatible with RSVP Use generic traffic shaping instead and set the committed information rate CIR equal to the port speed This prevents the router from exceeding the CIR rate and discarding the frames The following command configures generic traffic shaping with a CIR of 32000 bps Router config if traffic shape rate 32000 For further information and more detailed examples of Frame Relay configuration refer to the Cisco 1751 Router Voice over IP Configuration Guide 11 Obtaining Documentation Cisco documentation and additional literature are available on Cisco com Cisco also provides several ways to obtain technical assistance and other technical resources These sections explain how to obtain technical information from Cisco Systems Cisco com You can access the most current Cisco documentation at this URL http www cisco com univercd home home htm You can access the Cisco website at this URL http www cisco com 34 You can access international Cisco websites at this URL http www cisco com public countries_languages shtml Documentation
8. Relay Configuration for VoIP Configuring VoIP on a Frame Relay link involves certain special considerations to ensure acceptable voice quality For Frame Relay links with slow output rates 64 kbps or less and with data and voice being transmitted over the same permanent virtual circuit PVC you should configure the following parameters e Lower maximum transmission unit MTU size Voice packets are generally small If you decrease the MTU size to 300 bytes large data packets can be broken up into smaller data packets that are more easily interleaved with voice packets The following example configures an MTU size of 300 bytes over serial interface 0 0 Router interface serial 0 0 Router config if mtu 300 Note Lowering the MTU size affects data throughput speed e Resource Reservation Protocol RSVP Configure RSVP on subinterfaces which correspond to PVCs to reserve bandwidth for voice channels Refer to the Configuring RSVP Support for Frame Relay chapter in the Cisco IOS Quality of Service Solutions Configuration Guide Release 12 2 The following example configures RSVP over serial subinterface 0 0 1 Router config if interface serial 0 0 1 point to point Router config if ip address 192 168 19 0 255 0 0 0 Router config if ip rsvp bandwidth 48 48 e RTP header compression Configure RTP header compression on the subinterfaces to minimize the size of the voice packet See the Real Time Transport
9. and Security Device Manager SDM yourname con0 is now available Press RETURN to get started See the Initial Configuration Using Cisco Router and Security Device Manager section on page 12 to learn how to configure your router using SDM or to learn how to obtain SDM and install it on your router If you see the following messages the router has booted and is ready for initial configuration using the setup command facility or the command line interface CLI 11 System Configuration Dialog At any point you may enter a question mark for help Use ctrl c to abort configuration dialog at any prompt Default settings are in square brackets Would you like to enter the initial configuration dialog yes no To learn how to use the CLI to configure the router see the Initial Configuration Using Cisco CLI Manual Configuration section on page 12 9 Perform Initial Configuration You can configure your router by using one of the following tools e Security Device Manager lIf your router was purchased with a VPN bundle Security Device Manager is installed on the router See Initial Configuration Using Cisco Router and Security Device Manager to determine if SDM is installed on the router For instructions on configuring your router by using SDM refer to the Cisco Security Device Manager SDM Quick Start Guide that shipped with your router Voice over IP configuration must be done using the CL
10. do Note Use the Cisco Product Identification CPI tool to locate your product serial number before submitting a web or phone request for service You can access the CPI tool from the Cisco Technical Support Website by clicking the Tools amp Resources link under Documentation amp Tools Choose Cisco Product Identification Tool from the Alphabetical Index drop down list or click the Cisco Product Identification Tool link under Alerts amp RMAs The CPI tool offers three search options by product ID or model name by tree view or for certain products by copying and pasting show command output Search results show an illustration of your product with the serial number label location highlighted Locate the serial number label on your product and record the information before placing a service call 36 Submitting a Service Request Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information After you describe your situation the TAC Service Request Tool provides recommended solutions If your issue is not resolved using the recommended resources your service request is assigned to a Cisco TAC engineer The TAC Service Request Tool is located at this URL http www cisco com techsupport servicerequest For S1 or S2 service requests or if you do not have Internet access
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13. privileged user mode N Note Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 28 Before you configure each port on the VIC verify that the BRI interface has shut down and that the cable to the connected device is properly installed for the operating mode of the interface that you plan to configure Command Description router configure terminal Enter the global configuration mode router config isdn switch type basic net3 Specify the ISDN switch type Note The only switch type supported is the basic net3 router config interface bri 0 0 Change to interface configuration mode for port 0 in slot 0 router config if no ip address Specify that there is no IP address for this interface router config if isdn incoming voice voice modem data Configure this port for incoming calls router config if shutdown router config if isdn layer1 emulate user network router config if no shutdown Shut down the interface Then configure the Layer 1 port mode and clock settings e Enter user to configure the port as TE to function as a clock slave This is the default e Enter network to configure the port as NT to function as a clock master Activate the interface after you configure the port router config if network clock priority low high Optional only for TE configured ports To change th
14. the router interfaces The startup config file is used by the router on the next restart The running config file has the current operating configuration with the changes you have just made You can make any changes to the running config file however these changes will be lost when the router powers down To make these changes permanent copy the running config file to the startup config file stored in NVRAM Follow these steps for each router to write the new configuration to NVRAM Step1 Exit configuration mode and return to the enable prompt by pressing Ctrl Z or entering the end global configuration command Step2 To see the startup configuration stored in NVRAM enter the following command Router show startup config Step3 To see the operating configuration including any changes you have just made enter the following command Router show running config Step4 To write your changes to NVRAM and make them permanent enter the following command Router copy running config startup config Building configuration OK Router 14 The router is now configured to start in the new configuration Configuring the Fast Ethernet Interface To configure the Fast Ethernet interface follow these steps beginning in global configuration mode Command Purpose Step1 Router config interface Enter configuration mode for the Fast Ethernet interface fastethernet 0 0 Step2 Router config if ip address
15. 555 Now users can dial a five digit extension beginning with 5 from a telephone on the West router to reach a telephone on the East router These commands are summarized in Figure 17 Figure 17 West Router Configured for Remote Dial Peers 192 168 11 3 Ug 919 555 XXXX dial peer voice 501 voip destination pattern 1919555 session target ipv4 192 168 11 3 num exp 5 1919555 Source Destination 5 22336 The West router is now configured to send calls to the East router Table 7 shows how to configure the East router to send calls to the West router Table 7 East Router Remote Dial Peers with Wildcards Remote Location Telephone Number IP Address Dial Peer Tag West 408 555 xxxx 192 168 19 27 801 Enter the following information on the Fast router to create the dial peer configuration given in Table 7 East config num exp 5 1408555 East config dial peer voice 801 voip East config dial peer destination pattern 1408555 East config dial peer session target ipv4 192 168 19 27 These commands are summarized in Figure 18 Figure 18 East Router Configured for Remote Dial Peers 192 168 19 27 0035900 dial peer voice 801 voip destination pattern 1408555 session target ipv4 192 168 19 27 num exp 5 1408555 22639 a Destination Source Other Routers on the Network If the path between the endpoints of a voice call travels through intermediate
16. Cisco IOS software refer to the Cisco WAN Interface Cards Hardware Installation Guide that came with the cards Safety Information This section lists safety warnings that you should be aware of before installing WICs or VICs in the router To see translated versions of these warnings refer to the Regulatory Compliance and Safety Information for the Cisco 1700 Routers document that came with the router A Warning Before working on a system that has an on off switch turn off the power and unplug the power cord A Warning Only trained and qualified personnel should be allowed to install or replace this equipment A Warning Before working on equipment that is connected to power lines remove jewelry including rings necklaces and watches Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals A Warning Before opening the chassis disconnect the telephone network cables from the card to avoid contact with the telephone network voltages A Warning Do not work on the system or connect or disconnect cables during periods of lightning activity A Caution Do not connect a WAN telephone or fax cable to the card until you have completed the installation procedure Card Installation Follow these steps to insert a card in the router Step1 Make sure the router is turned off and is disconnected from AC power
17. Cisco SYSTEMS Quick Start Guide Cisco 1760 Modular Access Router Cabling and Installation INCLUDING LICENSE AND WARRANTY Cisco One Year Limited Hardware Warranty Terms Overview Parts List Mounting the Router in a Rack Installing WIC VIC Cards Connecting the Router to Your Local Network Connect Power and Verify Installation Connect a PC to the Router Console Port OONO TO BWDN Perform Initial Configuration Use the CLI to Configure VoIP Obtaining Documentation m N Documentation Feedback 2 Cisco Product Security Overview p Obtaining Technical Assistance ol Obtaining Additional Publications and Information Y 1 Cisco One Year Limited Hardware Warranty Terms There are special terms applicable to your hardware warranty and various services that you can use during the warranty period Your formal Warranty Statement including the warranties and license agreements applicable to Cisco software is available on Cisco com Follow these steps to access and download the Cisco Information Packet and your warranty and license agreements from Cisco com 1 Launch your browser and go to this URL http www cisco com univercd cc td doc es_inpck cetrans htm The Warranties and License Agreements page appears 2 To read the Cisco Information Packet follow these steps a Click the Information Packet Number field and make sure that the part number 78 5235 03A0 is highlighted b Select the langua
18. Connect a PC to the Router Console Port Connect a PC to the router s console port and establish a console session to view startup messages and verify voice card installation Follow these steps to connect the router to a terminal or PC Step 1 Connect the light blue console cable to the blue console port on the router as shown in Figure 10 Figure 10 Connecting the Console Cable to the Router 60946 1 Blue console port 3 Light blue console cable 2 To PC or terminal Step2 Use the console adapter to connect the other end of the cable to the terminal or PC If your terminal or PC has a console port that does not fit the adapter included with the router you must provide the correct adapter for that port Step3 Start HyperTerminal or a similar terminal emulation program on your PC Select the appropriate PC COM port Set A the configurations to 9600 baud 8 data bits 1 stop bit no flow control and no parity Startup messages begin to appear in your terminal emulation program window Caution Do not press any keys on the keyboard until the messages stop Any keys pressed during this time are interpreted as the first command typed when the messages stop which might cause the router to power off and start over It will take a few minutes for the messages to stop If you see the following messages the router has booted with a configuration file and is ready for initial configuration using the Cisco Router
19. I but you can use SDM to configure LAN and WAN connections firewalls VPNs routing and other features e Command line interface CLI If you prefer to use the Cisco IOS CLI see the Initial Configuration Using Cisco CLI Manual Configuration section on page 12 for instructions on how to use the CLI Initial Configuration Using Cisco Router and Security Device Manager If the following messages appear at the end of the startup sequence Cisco Router and Security Device Manager SDM is installed on your router yourname con0 is now available Press RETURN to get started For instructions on configuring your router by using SDM refer to the Cisco Router and Security Device Manager SDM Quick Start Guide that shipped with your router p Tip If the messages above do not appear SDM and the Cisco Router and Security Device Manager SDM Quick Start Guide were not shipped with your router If you want to use SDM you can download the latest version of SDM and instructions for installing it on your router from the following location http www cisco com pcgi bin tablebuild pl sdm To obtain the SDM quick start guide SDM release notes and other SDM documentation go to www cisco com go sdm and click the Technical Documentation link Initial Configuration Using Cisco CLI Manual Configuration This section shows how to display a command line interface CLI prompt for configuration using the CLI and it directs you to docume
20. IP network carries voice traffic between the offices Each PBX connects to an EXM VIC port in the router Figure 20 Linking PBXs over the IP Network Local Dial Peers E amp M VIC ae 0 0 192 168 11 3 919 555 xxxx a a PBX al os Ss g dial peer voice 111 pots destination pattern 1408555 port 0 0 22342 z Destination Source To configure EXM voice ports use the following commands beginning in privileged EXEC mode Command Task Step1 dial type dtmf pulse Select the appropriate dial type for out dialing Step2 signal wink start immediate delay dial Select the appropriate signal type for this interface Step3 cptone australia brazil china finland Select the appropriate voice call progress tone for france germany japan northamerica this interface unitedkingdom Step4 operation 2 wire 4 wire Select the appropriate cabling scheme for this voice port Step5 type 1121315 Select the appropriate EXM interface type Both PBXs in the example shown in Figure 20 use E amp M interface Type 2 with four wire operation and immediate start signaling The values for your configuration depend on your PBX and are available from your telecommunications department or the PBX manufacturer For more information about E amp M interface configuration commands refer to the VoIP Commands chapter of the Cisco 1751 Router Software Configuration Guide 24 In this example West users can dia
21. STN central office or to a PBX that does not support E amp M signaling This is the interface a standard telephone provides Ports on this VIC are pink An E amp M is a signaling technique for two wire and four wire telephone and trunk interfaces The E amp M VIC connects remote calls from an IP network to a PBX for local distribution Ports on this VIC are brown A DID is a service offered by telephone companies that allows external callers to dial an internal extension directly without operator assistance The VIC connects remote calls from the PSTN to a PBX for local distribution The ISDN BRI NT TE VIC provides a client side terminal equipment or TE ISDN S T physical interface for connection to an NT1 device terminating an ISDN telephone network It can also be configured to provide a network termination NT interface with phantom power Each of its two ports can carry two voice calls one over each ISDN B channel for a total of four calls per ISDN BRI card At present the ISDN BRI VIC does not support ISDN devices such as digital telephone fax or modem Figure 11 shows a typical VIC Figure 11 Voice Interface Card VIC port 1 VIC port 0 U H D l i yi B Co gam CO SEE MANUAL BEFORE INSTALLATION You should install and cable the VICs before you perform the software configuration tasks that follow Configu
22. Set the IP address and subnet mask for the Fast Ethernet 20 20 20 20 255 255 255 0 iterfac Step3 Router config if no shutdown Enable the Fast Ethernet interface Step4 Router config if exit Exit configuration mode for the Fast Ethernet interface Configuring a Dial Plan Use a dial plan to map the destination telephone numbers with the voice ports on the router In North America the North American Numbering Plan NANP is used which consists of an area code an office code and a station code Area codes are assigned geographically office codes are assigned to specific switches and station codes identify specific ports on each switch The format in North America is 1Nxx Nxx xxxx with N digits 2 through 9 and x digits 0 through 9 Internationally each country is assigned a one to three digit country code the country s dialing plan follows the country code In corporate environments VoIP can be configured to recognize extension numbers and expand them into their full E 164 international public telecommunications numbering plan dialed numbers by using two commands in tandem destination pattern and num exp Before you configure these two commands map individual telephone extensions with their full E 164 dialed numbers You can do this easily by creating a number expansion table For Cisco voice implementations three types of dial peers are used to match a dialed number to either a local telephony port or a remote IP addre
23. ach of the two BRI ports can operate in NT mode as the clock source or in TE mode as a clock slave For example e A PBX line card connection provides the BRI interface with a clock source operating in NT mode so that the VIC port operates as a clock slave in TE mode e A PBX trunk card connection provides the BRI interface as a clock slave operating in TE mode so that the VIC port operates as a clock source in NT mode Figure 22 shows an example of a network using ISDN BRI voice interfaces 26 Figure 22 A Network Using ISDN BRI Voice Interfaces Router A Cisco 1760 BRI NT interface m Router B Cisco 1760 BRI TE Ta interface WAN IP Network 0 Oo 609 Configuring the BRI Layer 1 At the BRI Layer 1 you can configure each port of the VIC to operate in NT clock source or TE clock slave mode by using the IOS isdn layer1 emulate command in interface configuration mode isdn layer1 emulate network user where network enables the VIC to operate in the NT mode and user enables it to operate in the TE mode The default setting for each port is the TE mode Configuring the ISDN Protocol Depending on your ISDN switch type the Layer 2 protocol may be configured to operate in NT or TE mode To do this use the isdn protocol emulate command in interface configuration mode isdn protocol emulate network user where network enables the ISDN Layer 2 to operate in the NT mode and user enables it to operate i
24. contact the Cisco TAC by telephone S1 or S2 service requests are those in which your production network is down or severely degraded Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly To open a service request by telephone use one of the following numbers Asia Pacific 61 2 8446 7411 Australia 1 800 805 227 EMEA 32 2 704 55 55 USA 1 800 553 2447 For a complete list of Cisco TAC contacts go to this URL http www cisco com techsupport contacts Definitions of Service Request Severity To ensure that all service requests are reported in a standard format Cisco has established severity definitions Severity 1 S1 Your network is down or there is a critical impact to your business operations You and Cisco will commit all necessary resources around the clock to resolve the situation Severity 2 S2 Operation of an existing network is severely degraded or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products You and Cisco will commit full time resources during normal business hours to resolve the situation Severity 3 S3 Operational performance of your network is impaired but most business operations remain functional You and Cisco will commit resources during normal business hours to restore service to satisfactory levels Severity 4 S4 You require information or as
25. cument Ordering 170 West Tasman Drive San Jose CA 95134 9883 We appreciate your comments 13 Cisco Product Security Overview Cisco provides a free online Security Vulnerability Policy portal at this URL http www cisco com en US products products_security_vulnerability_policy html From this site you can perform these tasks e Report security vulnerabilities in Cisco products e Obtain assistance with security incidents that involve Cisco products e Register to receive security information from Cisco A current list of security advisories and notices for Cisco products is available at this URL http www cisco com go psirt 35 If you prefer to see advisories and notices as they are updated in real time you can access a Product Security Incident Response Team Really Simple Syndication PSIRT RSS feed from this URL http www cisco com en US products products_psirt_rss_feed html Reporting Security Problems in Cisco Products Cisco is committed to delivering secure products We test our products internally before we release them and we strive to correct all vulnerabilities quickly If you think that you might have identified a vulnerability in a Cisco product contact PSIRT e Emergencies security alert cisco com e Nonemergencies psirt cisco com p Tip We encourage you to use Pretty Good Privacy PGP or a compatible product to encrypt any sensitive information that you send to Cisco PSIRT can work from encrypted
26. e setting for clock source priority e Set to high to use the external clock on the ISDN line to drive the VIC This is the default e Set to low to use the internal clock on the VIC router config if line power Optional only for NT configured ports Turn on the power supplied from the port to a TE device router config if isdn protocol emulate user network Configure the Layer 2 port protocol emulation e Enter user to configure the port as TE so that the PBX is the master This is the default e Enter network to configure the port as NT so that the PBX is the slave router config if end Exit configuration mode Debugging Commands Use the following commands to debug your configuration e debug bri e debug isdn q921 e debug isdn q931 e debug isdn events e show isdn status bri e show controller bri e show interfaces bri For more information about these commands see the IOS documentation Configuring DID Interfaces Direct Inward Dialing DID enables external callers to direct dial an internal extension on your PBX without operator assistance This service makes use of DID trunks provided by the local central office CO which forward only the last three to five digits of a phone number to your PBX If for example a company has a PBX with extensions 555 1000 through 555 1999 and an external caller dials 555 1234 the local CO forwards 234 to the PBX The PBX then rings extension 234 W
27. ed with the same IP address But it is much easier to use periods as wildcards as shown in Table 6 Table 6 West Router Remote Dial Peers with Wildcards IP Address 192 168 11 3 Destination Pattern 1919555 Remote Location Telephone Number 919 555 xxxx Dial Peer Tag 501 East Construct a table similar to Table 6 for your own routers assigning your own telephone numbers IP addresses and dial peer tags N Note The IP addresses shown in this guide are meant only as examples When you configure your network be sure to use your own IP addresses Enter the following information on the West router to create the dial peer configuration given in Table 6 West config dial peer voice 501 voip West config dial peer destination pattern 1919555 West config dial peer session target ipv4 192 168 11 3 Cisco IOS software describes the remote network as the session target This command is followed by the IP address of the remote router The prefix ipv4 means IP version 4 Alternatively you can use the prefix dns followed by the Domain Name System DNS name as follows West config dial peer session target dns voice eastrouter com Configure a dial peer on each router for each telephone number on every other router connected to it 21 You can simplify this process by configuring number expansion for East router telephone numbers on the West router West config num exp 5 1919
28. ency strict priority transmit queue for real time traffic such as VoIP traffic Strict priority queuing allows delay sensitive data such as voice to be dequeued and sent first before packets in other queues are dequeued giving delay sensitive data preferential treatment over other traffic This reduces jitter in voice conversations Configuring LLO Ensure that the voice and data packets have different IP precedence values This will allow the router to differentiate between them Normally data packets should have an IP precedence of 0 while voice packets should have an IP precedence of 5 If the VoIP packets are generated from within the router you may set IP precedence to 5 for these packets by using the procedure in the IP Precedence section on page 32 Create an access list and a class map for the voice packets Router config access list 101 permit ip any any precedence 5 Router config class map match all voice Link the class map to the access list Router config cmap match access group 101 Configure LLQ for voice traffic by creating a policy map and defining its class Router config policymap mypolicy Router config pmap class voice Assign priority bandwidth to the voice traffic The priority bandwidth assigned in kilobits per second depends on the codec used and the number of simultaneous calls allowed Router config pmap c priority 200 Attach LLQ to the dialer interface and create a s
29. er Contact the company from whom you purchased the product If you purchased the product directly from Cisco contact your Cisco Sales and Service Representative Complete the information below and keep it for reference Company product purchased from Company telephone number Product model number Product serial number Maintenance contract number 2 Overview This document describes the hardware installation and software configuration steps necessary to install your Cisco 1760 modular access router with its complement of WAN interface cards WICs and voice interface cards VICs Additional documentation can be found on Cisco com Product Serial Number Location The serial number label for Cisco 1760 router is located on the rear of the chassis in the lower right hand corner 3 Parts List Your router package should include the following items One Cisco 1760 modular access router One blue RJ 45 to DB 9 console cable One DB 25 to DB 9 adapter One black power supply cord Cable guide Rack mounting brackets Product documentation 4 Mounting the Router in a Rack A Warning To prevent bodily injury when mounting or servicing this unit in a rack you must take special precautions to ensure that the system remains stable The following guidelines are provided to ensure your safety This unit should be mounted at the bottom of the rack if it is the only unit in the rack When mounting this u
30. ervice policy Router config interface dialer 1 Router config if service policy out mypolicy 32 Multilink PPP with Link Fragmentation Interleave Multilink PPP with link fragmentation interleave MLPPP with LFI allows large packets to be multilink encapsulated and fragmented into smaller packets thus ensuring that voice packets are transmitted without delay small real time packets which are not multilink encapsulated are transmitted between fragments of the large packets The interleaving feature also provides a special transmit queue for the smaller delay sensitive packets enabling them to be transmitted earlier than other flows You should configure MLPPP with LFI if you have a dialer an ISDN PRI or BRI interface or a virtual template and either of the following e Point to point connections using PPP encapsulation e Links slower than 2 Mbps N Note Do not use MLPPP with LFI on links faster than 2 Mbps Configuring MLPPP with LFI To configure MLPPP with LFI on a dialer ISDN PRI or ISDN BRI interface or a virtual template you must first configure MLPPP with LFI on the interface or template by entering the following commands while in interface configuration mode Router config if encapsulation ppp Router config if ppp multilink Router config if ppp multilink interleave Optionally configure a maximum fragment delay Router config if ppp multilink fragment delay milliseconds You can also r
31. eserve a special queue for real time packet flows to specified destination User Datagram Protocol UDP ports allowing real time traffic to have higher priority than other flows You need the following command only if you have not configured RSVP Router config if ip rtp reserve lowest UDP port range of ports For virtual templates only apply the virtual template to the multilink bundle Router config if multilink virtual template 1 To create a virtual template interface enter the following interface virtual template global configuration command Router config interface virtual template 1 Real Time Transport Protocol Header Compression Real Time Transport Protocol RTP header compression on a PPP HDLC or similar serial interface compresses the packet header to reduce network overhead You should configure RTP header compression on a serial interface if you have either of the following e Links slower than 2 Mbps e A need to conserve bandwidth N Note Do not use RTP header compression on links faster than 2 Mbps Configuring RTP Header Compression Enable RTP header compression at both ends of the serial link by entering the ip rtp header compression interface configuration command Router config if ip rtp header compression 33 AS Note When you enter the show running config command the format of the ip rtp header compression command changes to ip rtp header compression iphc format Frame
32. expand services The publication identifies the challenges facing these companies and the technologies to help solve them using real world case studies and business strategies to help readers make sound technology investment decisions You can access iQ Magazine at this URL http www cisco com go iqmagazine 37 38 Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in designing developing and operating public and private internets and intranets You can access the Internet Protocol Journal at this URL http www cisco com ipj World class networking training is available from Cisco You can view current offerings at this URL http www cisco com en US learning index html 39 Cisco SYSTEMS Corporate Headquarters European Headquarters Americas Headquarters Asia Pacific Headquarters Cisco Systems Inc Cisco Systems International BV Cisco Systems Inc Cisco Systems Inc 170 West Tasman Drive Haarlerbergpark 170 West Tasman Drive 168 Robinson Road San Jose CA 95134 1706 Haarlerbergweg 13 19 San Jose CA 95134 1706 28 01 Capital Tower USA 1101 CH Amsterdam USA Singapore 068912 www cisco com The Netherlands www cisco com www cisco com Tel 408 526 4000 www europe cisco com Tel 408 526 7660 Tel 65 6317 7777 800 553 NETS 6387 Tel 31020 357 1000 Fax 408 527 0883 Fax 65 6317 7799 Fax 408 526 4100 Fax 310 20 357 1100 Cisco Systems has more than 200 offices
33. fig dial peer session target ipv4 192 168 19 27 East config dial peer exit East config Enter the following command to configure number expansion and to make it easy for East users to dial numbers on the West router West config num exp 5 1408555 Finally configure the E amp M port East config voice port 0 1 East config voice port signal immediate East config voice port operation 4 wire East config voice port type 2 East config voice port shut East config voice port no shut Checking the E amp M Configuration If you configured the EXM interfaces correctly you can place calls from a telephone served by one PBX to a telephone served by the other PBX using just the extension if you configured number expansion If you have trouble placing calls ping the remote router to make sure you have IP connectivity N Note See the Configuring Quality of Service section on page 31 if you need to improve the quality of voice connections 8 8 y pag y p q y Configuring ISDN BRI NT TE Interfaces The ISDN BRI VIC provides digital connectivity for VoIP networks using the European Telecommunications Standards Institute ETSI Net3 switch type The BRI VIC presents an ISDN S T physical interface that connects to a network termination NT or terminal equipment TE device With the ISDN BRI VIC you can connect the Cisco 1760 router to a PBX network in NT or TE mode or to a PSTN in TE mode E
34. ge in which you would like to read the document c Click Go The Cisco Limited Warranty and Software License page from the Information Packet appears d Read the document online or click the PDF icon to download and print the document in Adobe Portable Document Format PDF Note You must have Adobe Acrobat Reader to view and print PDF files You can download the reader from Adobe s website http www adobe com 3 To read translated and localized warranty information about your product follow these steps a Enter this part number in the Warranty Document Number field 78 10747 01C0 b Select the language in which you would like to view the document c Click Go The Cisco warranty page appears d Read the document online or click the PDF icon to download and print the document in Adobe Portable Document Format PDF You can also contact the Cisco service and support website for assistance http www cisco com public Support_root shtml Duration of Hardware Warranty One 1 Year Replacement Repair or Refund Policy for Hardware Cisco or its service center will use commercially reasonable efforts to ship a replacement part within ten 10 working days after receipt of a Return Materials Authorization RMA request Actual delivery times can vary depending on the customer location Cisco reserves the right to refund the purchase price as its exclusive warranty remedy To Receive a Return Materials Authorization RMA Numb
35. hen this feature is configured a voice enabled Cisco router can receive calls from a DID trunk and connect them to the appropriate extensions The DID feature makes it seem that all extensions on a PBX have direct lines to the PSTN This is accomplished without the expense associated with connecting each extension to the PSTN Besides saving the cost of an operator DID lets callers feel that they are calling specific individuals rather than calling a large company Figure 23 shows a hypothetical topology in which a user connected to the PSTN User A dials various numbers this user is then connected to the appropriate extensions on a PBX Figure 23 DID Support for Cisco 1760 Routers User A User B 456 Ss VoFR HIB es VoATM B or VolP FXS FXS Uy iy User C 234 User D 345 3 Table 8 DID Support Number Dialed Number Received by UserA by Router Extension Receiving Call 555 1234 234 User C 555 1345 345 User D 555 1456 456 User B 555 1678 678 No dial peer match found fast busy tone is played 29 Prerequisites The following actions are required to support DID e Obtain DID service from your service provider e Establish a working network e Complete your company s dial plan e Establish a working telephony network based on your company s dial plan e Install the VIC 2DID cards For more information about VIC 2DID cards refer to the Update to Cisco WAN Interface Card
36. how voice port command to identify the port numbers of voice interfaces installed in your router Router show voice port slot number port number As an example of voice port numbering if you install VICs in both slot 1 and slot 2 of the router the ports in each of these slots would be numbered as follows Slot 1 1 0 and 1 1 Slot 2 2 0 and 2 1 Figure 7 shows the Cisco 1760 router front panel and slot numbering Figure 7 Cisco 1760 Router Front Panel ee no T Cisco 1700 Series n O spr sors a ca y 1 WIC VIC Slot 0 9 Ethernet Port 2 WIC VIC Slot 1 10 Ethernet LEDs 3 Console Port 11 Slot 1 LEDs 4 VIC Slot 2 12 Slot 0 LEDs 5 VIC Slot 3 13 MOD OK LED 6 Slot 3 LEDs 14 PVDM 0 1 OK LEDs 7 Slot 2 LEDs 15 Router OK LED 8 Auxiliary Port 16 Power LED Connecting the Router to Your Local Network The router is connected to your local Ethernet network through the yellow 10 100 Ethernet port You must provide the following items for this connection e A straight through RJ 45 to RJ 45 Ethernet cable e A 10 100 Mbps Ethernet hub or switch A Warning The ports labeled 10 100 Mbps Ethernet port and Console port are safety extra low voltage SELV circuits SELV circuits should only be connected to other SELV circuits Because BRI circuits are treated like telephone network voltage avoid connecting the SELV circuits to the telepho
37. ial peer destination pattern 14087677448 Router config dial peer session target serial 0 0 100 15 The destination pattern command defines the telephone number associated with the VoFR dial peer The session target command specifies a destination DLCI for the VoFR dial peer Use the dial peer voice command to define dial peers and to change to dial peer configuration mode For examples see the Configuring FXS Interfaces section on page 17 the Configuring FXO Interfaces section on page 23 and the Configuring E amp M Interfaces section on page 24 Wildcards and Number Expansion Office PBXs are configured so that a user can dial a local call within the same PBX by dialing the extension only for instance the four digit extension 3737 or the five digit extension 53737 rather than dialing the full telephone number 1 408 555 3737 You can provide the same shortcut on a VoIP network by using the number expansion num exp command Router config num exp 5 1408555 This command tells the router to expand a particular sequence of dialed numbers into a complete telephone number destination pattern as shown in Table 1 Table 1 Sample Number Expansion Table Destination Extension Pattern Num Exp Command Entry Description 3737 14085553737 num exp 3737 To expand 3737 to 14085553737 14085553737 1408555 num exp 1408555 To expand any dialed sequence of four digits represented by four period
38. information that is compatible with PGP versions 2 x through 8 x Never use a revoked or an expired encryption key The correct public key to use in your correspondence with PSIRT is the one that has the most recent creation date in this public key server list http pgp mit edu 11371 pks lookup search psirt 40cisco com amp op index amp exact 0n In an emergency you can also reach PSIRT by telephone e 1877 228 7302 e 1408 525 6532 14 Obtaining Technical Assistance For all customers partners resellers and distributors who hold valid Cisco service contracts Cisco Technical Support provides 24 hour a day award winning technical assistance The Cisco Technical Support Website on Cisco com features extensive online support resources In addition Cisco Technical Assistance Center TAC engineers provide telephone support If you do not hold a valid Cisco service contract contact your reseller Cisco Technical Support Website The Cisco Technical Support Website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies The website is available 24 hours a day 365 days a year at this URL http www cisco com techsupport Access to all tools on the Cisco Technical Support Website requires a Cisco com user ID and password If you have a valid service contract but do not have a user ID or password you can register at this URL http tools cisco com RPF register register
39. ion Phillips flat head screws 24 Configuration Phillips truss head screws Attaching Brackets to the Rack After the brackets are attached to the router use the four supplied number 12 Phillips machine screws to securely attach the brackets to the rack as shown in Figure 3 A Caution Make sure that the fans on the side of the chassis are not blocked Figure 3 Attaching Brackets to the Rack Phillips machine screws Attaching the Optional Cable Guide Cisco recommends attaching the cable guide to prevent the cables from obscuring the front panel of the router and the other devices installed in the rack If the router is in a 19 inch or 24 inch rack use the supplied black screw as shown in Figure 4 to attach the cable guide to the left or right bracket Figure 4 Attaching the Cable Guide to the Router Cable guide screw 5 Installing WIC VIC Cards The router has four card slots that hold Cisco WICs and VICs Either one or two WICs may be installed with the remaining slots holding VICs as desired If no WICs are present in the slots up to four VICs may be installed Each WIC has one or two WAN ports and each VIC has two or more voice ports This section describes the procedure for installing a WIC or a VIC in the router AS Note For details on specific WICs and VICs on how to connect a WIC to the WAN line or a VIC to the telephone and fax line and on how to configure the interface with
40. ion pattern for incoming calls However to create a POTS dial peer for an FXO interface the destination pattern refers to outgoing calls and you can include wildcards in it because the PSTN performs the switching The VoIP feature can also remove digits that you do not want to send to the PSTN For instance to dial 9 to reach an outside line that is the analog PSTN enter the following commands West gt enable Password West configure terminal West config dial peer voice 201 pots West config dial peer destination pattern 9 West config dial peer port 1 0 When you dial 9 the router makes a connection to the PSTN through voice port 1 0 The PSTN then provides a dial tone Any digits you enter on the telephone thereafter are interpreted on the PSTN To enable East router users to make calls over the West router local PSTN enter the following commands East config dial peer voice 701 voip East config dial peer destination pattern 7 East config dial peer session target ipv4 192 168 19 27 West config dial peer voice 601 pots West config dial peer destination pattern 7 West config dial peer port 1 0 When you dial 7 on the East router the call is connected to the PSTN on the West router The PSTN then provides a dial tone and any digits you enter on the telephone thereafter are interpreted on the PSTN 23 X Note In this example West router voice port 1 0 has two separate POTS dial peers associated w
41. ion so that numbers beginning with 5 belonging to the East office and sent by the West PBX to the West router are expanded into the full destination pattern West config num exp 5 1919555 Note You do not need to configure number expansion for calls from one West telephone to another West telephone because the PBX switches those calls Finally enter the following global configuration voice port command to configure the EXM port West config voice port 0 0 West config voice port signal immediate West config voice port operation 4 wire West config voice port type 2 West config voice port shut West config voice port no shut Note For these commands to take effect you have to cycle the port by using the shutdown and no shutdown commands AS Note Configure the PBX to pass all dual tone multifrequency DTMF signals to the router 25 Configure the East router similar to the West router The East router connects to the PBX through an E amp M VIC port 0 1 Enter the following commands to configure a POTS dial peer for all East telephones East config dial peer voice 211 pots East config dial peer destination pattern 1919555 East config dial peer port 0 1 Enter the following commands to configure a VoIP dial peer for telephones on the West router East config dial peer voice 221 voip East config dial peer destination pattern 1408555 East con
42. ith it Dial peer 201 matches calls beginning with the digit 9 and handles PSTN calls originating from the West router Dial peer 601 matches calls beginning with the digit 7 and handles calls to the PSTN originating from the East router Checking the FXO Configuration If you configured your FXO interface according to the example described in the Configuring FXO Interfaces section on page 23 you can place outgoing calls over the PSTN If you have trouble placing calls use the show voice port command to make sure that the VIC is installed correctly Use the show dial peer voice command to make sure that the data you configured is correct and test the PSTN by connecting a handset directly to the PSTN outlet and placing a call N Note See the Configuring Quality of Service section on page 31 if you need to improve the quality of voice connections 8 8 y pag y p q y Configuring E amp M Interfaces If you have more than a few voice users at each location the cost of voice ports and routers and the effort needed to configure dial peers for all the combinations of origins and destinations increases rapidly In this situation it might be more efficient to use a PBX at each location to switch local traffic and direct incoming calls and then use E amp M VICs to connect the PBXs over an IP network Figure 20 shows a company with two offices West and East Each office has a PBX to operate its internal telephone network and the
43. l 5 and a four digit extension to reach telephones in the East office East users can dial 5 and a four digit extension to reach telephones in the West office The West router connects to the PBX through an E amp M VIC port 0 0 This port is associated with a POTS dial peer for incoming calls But you no longer need to associate every telephone number with its own port Instead you can configure a local dial peer as if all the West telephones represented by a wildcard destination pattern are connected directly to this port as shown in the following commands West gt enable Password West configure terminal West config dial peer voice 111 pots West config dial peer destination pattern 1408555 West config dial peer port 0 0 Configure VoIP dial peers for outgoing calls and associate destination phone numbers on the East router with that router IP address as shown in Figure 21 and in the following commands West config dial peer voice 121 voip West config dial peer destination pattern 1919555 West config dial peer session target ipv4 192 168 11 3 West config dial peer exit West config Figure 21 Linking PBXs over the IP Network Remote Dial Peers E amp M VIC 408 555 xxxx 0 0 dial peer voice 121 voip destination pattern 1919555 session target ipv4 192 168 11 3 num exp 5 1919555 192 168 11 3 919 555 xxxx y A 22343 Source Destination x Now configure number expans
44. n the TE mode The default setting is the TE mode Note The configurations of Layer 1 and Layer 2 are independent of each other For example you can set the Layer 1 operating mode to NT and set the Layer 2 to TE Turning the Line Power On Off To control the line power phantom power only being supplied to a connected device use the line_power command in interface configuration mode line_power no line_power The line_power and no line_power commands are valid only for a BRI port operating in NT mode If a port is equipped with hardware to supply line power using these commands will activate or deactivate line power provision from that port Setting the Network Clock Priority If a port is operating in TE mode you can set the clock priority for that port The clock priority determines whether the external clock on the ISDN line or the internal clock on the system board takes control To change the clock priority use the network clock priority command in interface configuration mode network clock priority high low 27 where high enables the external clock and low enables the internal clock to drive the VIC By default the clock priority is set to high Note If the VIC loses its external clock source as when the ISDN line is down the internal clock source takes over until the external clock is functioning again Configuration Example To configure each BRI interface follow these steps starting in
45. ne network voltage TNV circuits To see translated versions of this warning refer to the Regulatory Compliance and Safety Information for Cisco 1700 Routers document that came with the router A Caution Always connect the Ethernet cable to the yellow ports on the router Do not connect the cable to an ISDN S T or U port on a WIC or to an NT1 that is connected to a WIC Accidentally connecting the cable to the wrong port can damage your router Follow these steps to connect the router to your local network Step1 Connect one end of the Ethernet cable to the yellow Ethernet port labeled 10 100 Mbps Ethernet port as shown in Figure 8 Figure 8 Connecting the Router to the Local Network 60945 1 10 100 Ethernet port 3 Straight through Ethernet cable 2 Ethernet hub or switch Step2 Connect the other end of the Ethernet cable to a network port on the hub or switch 7 Connect Power and Verify Installation Read the following warnings before connecting the power to the router A Warning The power supply is designed to work with TN power systems A Warning A This product relies on the building s installation for short circuit overcurrent protection Ensure that a fuse or circuit breaker no larger than 120VAC 15A U S 240VAC 16A international is used on the phase conductors all current carrying conductors Warning A This equipment needs to be grounded Use a green and
46. nit in a partially filled rack load the rack from the bottom to the top with the heaviest component at the bottom of the rack If the rack is provided with stabilizing devices install the stabilizers before mounting or servicing the unit in the rack The rack mounting brackets supplied with the router can be attached to a 19 or 24 inch rack Figure 1 shows the bracket mounting points that attach to the rack Figure 1 Bracket Mounting Points 19 rack 24 rack mount point mount point 19 rack 24 rack mount point mount point To install the router in a 19 inch or a 24 inch standard rack follow the instructions described in these procedures e Attaching Brackets to the Router e Attaching Brackets to the Rack e Attaching the Optional Cable Guide Attaching Brackets to the Router The bracket orientation and the screws you use depend on whether you are attaching the brackets for a 19 inch or a 24 inch rack Use two of the supplied screws to attach each bracket according to the following guidelines e Fora 19 inch rack use the supplied number 8 Phillips flat head screws to attach the long side of the bracket to the router e Fora 24 inch rack use the supplied number 8 Phillips truss head screws to attach the short side of the bracket to the router Figure 2 shows how to attach brackets to the two sides of the router with the front panel forward Figure 2 Attaching Brackets for 19 and 24 Inch Racks D 19 Configurat
47. ntation for the CLI configuration You can use the CLI if the following messages appear at the end of the startup sequence System Configuration Dialog At any point you may enter a question mark for help Use ctrl c to abort configuration dialog at any prompt Default settings are in square brackets Would you like to enter the initial configuration dialog yes no 12 If these messages do not appear SDM and a default configuration file were installed on the router at the factory To use SDM to configure the router see the Initial Configuration Using Cisco Router and Security Device Manager section on page 12 Note Be sure to save your configuration changes occasionally so that they are not lost during resets power cycles or power outages Use the copy running config startup config command at the privileged EXEC mode prompt Router to save the configuration to NVRAM Step1 To proceed with manual configuration using the CLI enter no when the power up messages end Would you like to enter the initial configuration dialog yes no no Step2 Press Return to terminate autoinstall and continue with manual configuration Would you like to terminate autoinstall yes Return Several messages appear ending with a line similar to the following Copyright c 1986 2000 by cisco Systems Inc Compiled lt date gt lt time gt by lt person gt Step3 Press Return to display the Router gt promp
48. r Cisco router is ready to configure for specific functions Configuring the Router Using the Cisco IOS CLI 13 10 Use the CLI to Configure VoIP The following sections explain how to set up basic VoIP configurations using the Cisco IOS command line interface CLI Note VolP requires one of the IP Plus Voice feature sets from IOS Release 12 2 2 XK or later e Information for International Users e Saving the Configuration e Configuring the Fast Ethernet Interface e Configuring a Dial Plan e Configuring Voice Interface Cards e Configuring Quality of Service e IP Precedence e Low Latency Queuing e Multilink PPP with Link Fragmentation Interleave e Real Time Transport Protocol Header Compression e Frame Relay Configuration for VoIP Information for International Users International users must set the values of certain voice port commands such as cptone that are specific to their country Refer to the Cisco 1751 Router Software Configuration Guide available on Cisco com for details The rest of this guide explains how to configure your router for VoIP traffic Saving the Configuration You must save the new configuration to nonvolatile RAM NVRAM periodically during the configuration process and also when you finish configuring the router Cisco IOS software uses two configuration files startup config and running config The startup config file is a backup file that has all the information you specified about
49. ring FXS Interfaces This section explains how to configure ports on FXS VICs that connect directly to a standard telephone a fax machine or a similar device Figure 12 shows a basic voice network A small business uses a Cisco 1760 router named West to provide telephone and fax connections among employees in its office Two of these telephones are connected to an FXS VIC port in the West router Figure 12 Basic Voice Network West Router 408 555 3737 10694 FXS VIC 0 0 West FXS VIC 408 555 4141 S 0 1 22634 Note You can name your router by using the global configuration hostname command For information about port numbering see the Voice Port Verification section Table 2 West Router Telephone Numbers and Voice Ports Telephone Number Voice Port 408 555 3737 0 0 408 555 4141 0 1 Note If your router is configured with four 2 port VICs you can connect a total of eight telephones and fax machines to it As the router has only four slots you need to replace one VIC with a WIC to provide an interface for IP connectivity to the WAN and for data traffic To accommodate more voice devices you need to add more routers or use an E amp M VIC and a local PBX rather than connecting every telephone to its own FXS VIC Local Dial Peers To route a received voice call to the right destination the router needs to know which telephone number belongs to each voice port For ins
50. routers configure those routers for VoIP traffic as described in the Configuring FXS Interfaces section on page 17 You need to configure POTS or VoIP dial peers on an intermediate router only if that router also has voice devices attached to it 22 Checking the Remote Dial Peer Configuration If you configured VoIP dial peers on your router by following these examples you can place calls from that router to telephones on the remote routers using just the extension if you configured number expansion If you have trouble placing calls ping the remote router to make sure you have IP connectivity or use the show dial peer voice command to verify that the data you configured is correct AS Note See the Configuring Quality of Service section on page 31 if you need to improve the quality of voice connections Configuring FXO Interfaces FXO interfaces provide a gateway from the VoIP network to the analog PSTN or to a PBX that does not support E amp M signaling so that users can reach telephones and fax machines outside the VoIP network Figure 19 shows a typical FXO gateway attached to the West router Figure 19 FXO Gateway to PSTN FXS VIC 0 0 Source FXO VIC 1 0 dial peer voice 201 pots destination pattern 9 port 0 0 Destination 51077 To create a POTS dial peer for an FXS interface as explained earlier you enter the complete telephone number of the attached telephone as the destinat
51. s by prefixing 1408555 to it Seza 1408555 num exp 5 1408555 To expand a five digit extension beginning with the numeral 5 by prefixing 140855 to it You can use a period as a wildcard character representing a single digit in a telephone number You can use the show num exp command to verify the number expansion information Router show num exp dialed number After you have configured dial peers and assigned destination patterns to them you can use the show dialplan number command to see how a telephone number maps to a dial peer Router show dialplan number dialed number N Note You must still configure each telephone number in full on a local dial peer so that the router can find the voice port to which it belongs Configuring Voice Interface Cards The router supports one to four Cisco VICs Each VIC provides two ports You need one VIC port for each voice connection N Note To transmit voice calls over an IP WAN you need in addition to the VICs at least one WIC in the router to provide the connection to the WAN There are five types of VIC interfaces e An FXS foreign exchange station interface connects directly to a standard telephone a fax machine or a similar device The FXS VIC interface supplies ringing voltage dial tone and similar signals to the station Ports on this VIC are gray 16 An FXO foreign exchange office interface connects local calls to a P
52. s Hardware Installation Guide e Install at least one other network module or WAN interface card to provide the connection to the LAN or WAN Configuring a Voice Port to Support DID Use the signal did command with the appropriate signal type to configure a DID voice port West config voice port signal did wink start immediate delay dial where wink start immediate and delay dial indicate the signal types The default signal type is immediate As an example the port can be configured as shown in the following commands Router configure terminal Router config voice port 1 0 West config voice port signal did wink start Verifying DID Voice Port Configuration To verify voice port configuration enter the show voice port command You can specify a voice port or view the status of all configured voice ports In the following example the specified port is configured for DID Router show voice port 1 0 Foreign Exchange Station with Direct Inward Dialing FXS DID 1 0 Slot is 1 Port is 0 Type of VoicePort is DID IN Operation State is DORMANT Administrative State is UP No Interface Down Failure Description is not set Noise Regeneration is enabled Non Linear Processing is enabled Music On Hold Threshold is Set to 38 dBm In Gain is Set to 0 dB Out Attenuation is Set to 0 dB Echo Cancellation is enabled Echo Cancel Coverage is set to 8 ms Playout delay Mode is set to default Playout delay Nominal is set to 60 ms Playou
53. sistance with Cisco product capabilities installation or configuration There is little or no effect on your business operations 15 Obtaining Additional Publications and Information Information about Cisco products technologies and network solutions is available from various online and printed sources e Cisco Marketplace provides a variety of Cisco books reference guides and logo merchandise Visit Cisco Marketplace the company store at this URL http www cisco com go marketplace e Cisco Press publishes a wide range of general networking training and certification titles Both new and experienced users will benefit from these publications For current Cisco Press titles and other information go to Cisco Press at this URL http www ciscopress com e Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and networking investments Each quarter Packet delivers coverage of the latest industry trends technology breakthroughs and Cisco products and solutions as well as network deployment and troubleshooting tips configuration examples customer case studies certification and training information and links to scores of in depth online resources You can access Packet magazine at this URL http www cisco com packet e iO Magazine is the quarterly publication from Cisco Systems designed to help growing companies learn how they can use technology to increase revenue streamline their business and
54. ss e A POTS dial peer associates a physical voice port with a local telephone device The key commands that you need to configure are the port and destination pattern commands as in the following example Router config dial peer voice 401 pots Router config dial peer destination pattern 14085553737 Router config dial peer port 0 0 The destination pattern command defines the telephone number associated with the POTS dial peer The port command associates the POTS dial peer with a specific logical dial interface normally the voice port connecting your router to the local POTS network e A VoIP dial peer associates a telephone number with an IP address The key commands that you need to configure are the destination pattern and session target commands as in the following example Router config dial peer voice 501 voip Router config dial peer destination pattern 1919555 Router config dial peer session target ipv4 192 168 11 3 The destination pattern command defines the telephone number associated with the VoIP dial peer The session target command specifies a destination IP address for the VoIP dial peer e A Voice over Frame Relay VoFR dial peer associates a telephone number with a Frame Relay data link connection identifier DLCI The key commands you need to configure are the destination pattern and session target commands as in the following example Router config dial peer voice 601 vofr Router config d
55. t flashfs 4 Initialization complete Router gt Step4 Enter privileged EXEC mode Router gt enable Router Step5 For configuration using the CLI refer to the applicable configuration procedures in the Cisco 1700 Router Software Configuration Guide documentation at the following URL http www cisco com univercd cc td doc product access acs_mod 1800 swlindex btm Step6 Verify the initial configuration See the Verifying the Initial Configuration section on page 13 for verification procedures Verifying the Initial Configuration To verify that the new interfaces are operating correctly perform the following tests e To verify that the interfaces are operating correctly and that the interfaces and line protocol are in the correct state up or down enter the show interfaces command e To display a summary status of the interfaces configured for IP enter the show ip interface brief command e To verify that you configured the correct host name and password enter the show configuration command e To identify the port numbers of voice interfaces installed in your router enter the show voice port command Router show voice port slot number port number As an example of voice port numbering if you installed VICs in both slot 1 and slot 2 of the router the ports in each of these slots would be numbered as follows Slot 1 1 0 and 1 1 Slot 2 2 0 and 2 1 When you have completed and verified the initial configuration you
56. t delay Maximum is set to 200 ms Playout delay Minimum mode is set to default value 4 ms Playout delay Fax is set to 300 ms Connection Mode is normal Connection Number is not set Initial Time Out is set to 10 s Interdigit Time Out is set to 10 s Call Disconnect Time Out is set to 3 s Ringing Time Out is set to 180 s Wait Release Time Out is set to 3 s Companding Type is u law Region Tone is set for US Analog Info Follows Currently processing none Maintenance Mode Set to None not in mtc mode 30 Number of signaling protocol errors are 0 Impedance is set to 600r Ohm Station name Chalil Mohanan Station number 1234567 Voice card specific Info Follows Signal Type is wink start Dial Type is dtmf In Seizure is inactive Out Seizure is inactive Digit Duration Timing is set to 100 ms InterDigit Duration Timing is set to 100 ms Pulse Rate Timing is set to 10 pulses second InterDigit Pulse Duration Timing is set to 750 ms Clear Wait Duration Timing is set to 400 ms Wink Wait Duration Timing is set to 200 ms Wait Wink Duration Timing is set to 550 ms Wink Duration Timing is set to 200 ms Delay Start Timing is set to 300 ms Delay Duration Timing is set to 2000 ms Dial Pulse Min Delay is set to 140 ms Percent Break of Pulse is 60 percent Auto Cut through is disabled Dialout Delay for immediate start is 300 ms Configuring Quality of Service The sections that follow provide an overview and brief explanations of Qualit
57. tance if a call comes in for 408 555 3737 the router needs to know that this telephone is connected to voice port 0 0 as shown in Figure 12 In other words the router needs to know the information in Table 2 To hold this information Cisco IOS software uses objects called dial peers A telephone number a voice port and other call parameters are tied together by associating them all with the same dial peer Configuring dial peers is similar to configuring static IP routes you are telling the router what path to follow to route the call All voice technologies use dial peers to define the characteristics associated with a call leg A call leg is a segment of a call path for instance between a telephone and a router a router and a network a router and a PBX or a router and the PSTN Each call leg corresponds to a dial peer Dial peers are identified by numbers but they are usually referred to as tags to avoid confusion with telephone numbers Dial peer tags are arbitrary integers that can range from 1 to 23 1 2147483647 Within the allowed range you can choose any dial peer tag that is convenient or that makes sense to you Dial peers on the same router must have unique tags but you can reuse the tags on other routers Table 3 assigns a dial peer tag to each telephone number and its associated voice port on the West router This type of dial peer is called a POTS dial peer or a local dial peer The term POTS plain old telephone service
58. traffic to each other over the same IP network they use for data traffic use a WIC on each router to provide a connection to the IP network as shown in Figure 16 20 Figure 16 IP Connection Between Routers 408 555 3737 919 555 8282 FXS VIC 0 0 FXS VIC 192 168 19 27 FXS VIC FXS VIC 408 555 4141 0 1 1 1 i Look at the connection between the West router and the IP network This connection does not include a voice port or an attached telephone it leads from a WAN interface to a remote destination somewhere on the IP network IP routers can locate IP addresses on the network but they cannot locate telephone numbers To route an outgoing voice call over this connection the West router must associate a telephone number in the East office with the IP address of the East router 22335 Q Table 5 assigns a dial peer tag to each telephone number and its associated IP address on the West router This type of dial peer is called a remote dial peer or VoIP dial peer Remember the dial peer tags are arbitrary A VoIP dial peer associates a telephone number with an IP address Table 5 West Router Remote Dial Peers Remote Location Telephone Number Destination Pattern IP Address Dial Peer Tag East 919 555 8282 19195558282 192 168 11 3 1501 East 919 555 9595 19195559595 192 168 11 3 1502 You can create a VolP dial peer on the West router for every telephone on the East router all associat
59. y of Service QoS mechanisms To ensure the best QoS you will need to configure various QoS mechanisms together The examples in the following sections are given only to illustrate various QoS concepts To configure your router please use the guidelines commands and example configurations that are given in the Cisco IOS Quality of Service Solutions Configuration Guide Release 12 2 or later Voice traffic is much more sensitive to timing variations than data traffic For good voice performance you need to configure your data network so that voice packets are not lost or delayed To achieve the level of network performance needed for VoIP connections use the following features to improve QoS e IP Precedence e Low Latency Queuing e Multilink PPP with Link Fragmentation Interleave Real Time Transport Protocol Header Compression e Frame Relay Configuration for VoIP Cisco IOS software provides many other tools for ensuring QoS such as custom queuing priority queuing and weighted fair queuing For further information and more detailed examples of QoS configuration refer to the Congestion Management chapter in the Cisco IOS Quality of Service Solutions Configuration Guide Release 12 2 or later N Note QoS measures the level of network performance It does not directly measure the quality of the voice signal Configuring VoIP on a Frame Relay link involves special considerations See the Frame Relay Configuration for VoIP
60. yellow 14 AWG ground wire to connect the host to earth ground during normal use Warning A When installing the unit always make the ground connection first and disconnect it last Warning Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available Follow these steps to connect power to the router and to turn the router on Step 1 Figure 9 Connect the separate power cord to the power socket on the rear panel as shown in Figure 9 Connecting the Power Supply Step2 Connect the other end of the separate power cord to a power outlet Step3 Turn the power switch to on Step4 Verify that you have correctly installed the router by checking the following LEDs PWR On when power is being supplied to the router LINK On when the router is correctly connected to the local Ethernet LAN through the 10 100 Mbps Ethernet port ETH ACT Blinking when there is network traffic on the local Ethernet LAN SLOT OK On when a WIC is correctly installed in the slot PVDM 0 1 OK On when a packet voice data module PVDM is correctly installed in its slot and is recognized by the system e MOD OK On when the virtual private network VPN module is correctly installed in its slot and is recognized by the system S

Cisco Systems 1760 Network Router User Manual

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