Table Of Contents
Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module
High-Complexity Voice Compression
Related Features and Technologies
How to Configure Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module
Configuring Network Clock Source and Participation
Network Clocking Prerequisites
Configuring Clock Source Internal
Configuring the AIM-ATM-VOICE-30 Card for High-Complexity Codecs and Time Slots
High-Complexity Codecs Configuration Example
Verifying Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module
Checking Voice DSP Configuration
Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module
This document provides configuration enhancements for the AIM-ATM-VOICE-30 digital signaling processor (DSP) card on the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, and Cisco 3745. This feature provides a voice processing (termination) solution with AIM-ATM-VOICE-30 at a density of 30 Voice over IP (VoIP) or Voice over Frame Relay (VoFR) voice or fax channels, while not consuming a network module slot.
This feature adds the following benefits:
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Integrated voice and serial data WAN functionality on the same T1/E1 interface or on the second port of the voice/WAN interface cards (VWIC)
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The serial interface supports the following features:
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Feature Specifications for the Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module
12.2(15)T
This feature was introduced
For platforms supported in Cisco IOS Release 12.2(15)T, consult Cisco Feature Navigator.
Finding Support Information for Platforms and Cisco IOS Software Images
Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image support. Access Cisco Feature Navigator at http://www.cisco.com/go/fn. You must have an account on Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box and follow the instructions that appear.
Contents
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Prerequisites for Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module
Cisco 2600 series and Cisco 2600XM
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Cisco 3660, Cisco 3725, and Cisco 3745
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Restrictions
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Refer to the following links for information about Cisco IOS software image sets supported in 12.2(15)T.
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http://www.cisco.com/warp/public/cc/pd/rt/2600/prodlit/1675_pp.htm•
http://www.cisco.com/warp/public/cc/pd/rt/2600/prodlit/1975_pp.htmInformation About Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module
Before you configure the Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module feature, you must first understand the following concepts:
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AIM-ATM-VOICE-30 Module
The AIM-ATM-VOICE-30 module is an advanced integration module capable of supporting up to 30 voice or fax channels when used in a Cisco 2600 series, Cisco 2600XM, Cisco 2691, Cisco 3660, Cisco 3725, and Cisco 3745 with one of the T1/E1 voice/WAN interface cards (such as VWIC-1T1). The AIM-ATM-VOICE-30 module includes DSPs that are used for a number of voice processing tasks such as voice compression and decompression, voice activity detection or silence suppression, and private branch exchange (PBX) or public switched telephone network (PSTN) signaling protocols.
By using the AIM-ATM-VOICE-30, you can support VoIP, VoFR, or VoIP over ATM (VoATM) while leaving the router network module slot open for other functions such as asynchronous or synchronous serial concentration. Refer to the AIM-ATM, AIM-VOICE-30, and AIM-ATM-VOICE-30 on the Cisco 2600 Series and Cisco 3660 feature document for more information.
Integrated Voice and Data WAN
This feature adds integrated voice and serial data WAN service on the same T1 or E1 interface or VWIC on AIM-ATM-VOICE-30 DSP cards. This enhancement enables you to use some DS0 channels for serial data FR, HDLC, and PPP, for example, while the remaining T1 or E1channels can be used for voice CAS or PRI.
Figure 1 shows a typical application scenario. Your ability to integrate voice and serial data on the same T1 or E1 line minimizes the recurring cost of providing PSTN and data WAN access. In particular, integrated access provides a number of voice DS0s (for PSTN access) and a Frame Relay link on the same T1.
Figure 1 Typical Application Scenario
Figure 2 shows a typical deployment scenario in which port 0 of the VWIC-MFT module is connected to a service provider with 20 channels. These 20 channels are used for voice (running CAS or PRI), while the remaining four channels are used for serial data (running Frame Relay). Using this type of configuration, you can take advantage of the integrated service offered by a service provider and minimize the cost of leasing and supporting T1 or E1 lines.
Figure 2 Typical Feature Deployment
High-Complexity Voice Compression
This feature adds high-complexity G.723 and GSM-FR codec support to the AIM-ATM-VOICE-30 card so that the DSP can support both medium- and high-complexity codecs running separately. Each DSP core can process a maximum of two voice channels, so each AIM-ATM-VOICE-30 module can support up to 16 voice channels when running a high-complexity DSP firmware image.
The following high-complexity codecs are supported:
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The following medium-complexity codecs are supported in high-complexity mode:
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Related Features and Technologies
The following technologies are related to the Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module feature. See the "Related Documents" section for related documents.
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How to Configure Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module
See the following sections for configuration tasks. Each task in the list indicates if the task is required or optional.
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Configuring Network Clock Source and Participation
Note
Packet voice and video are sensitive to time delays. To prevent mismatches and data slips, you must synchronize data flows to a single clock source, known as the network clock. When a network clock is configured on a gateway, the router is externally clocked by one T1 or E1 port and passes that clock signal across the backplane to another T1 or E1 port on another WIC or network module slot. Use of a network clock on a gateway is configured by naming the network modules and interface cards that are participating in network clocking, and then selecting a port to act as the source of timing for the network clock.
The network clock provides timing from the source, through the port to the AIM, and then out to all participating router slots. The Cisco 2600 series and Cisco 2600XM support one internal AIM slot, and the Cisco 3660, Cisco 3725, and Cisco 3745 support two internal AIM slots.
Network Clocking Commands
Three commands configure network clocking: network-clock-participate, network-clock-select, and clock source (digital ports only).
The network-clock-participate command configures the specified router slot to take its clock from the network clock; that is, this command identifies the slots that get their timing from the AIM.
The network-clock-select command is used if the clock is from an external source.This command configures a port in one of the participating slots to be a source for the network clock, and assigns it a priority level. This command is repeated for each port that you want to act as a primary or backup source for the network clock. The highest priority level indicates the port that you want to be the primary source of timing for the network clock. If the highest-priority port becomes unavailable, the second highest priority level takes over automatically as the network clock, and so forth for the lower-priority levels. The clocking is provided to the AIM, which then provides it to participating slots in the router.
Network Clocking Prerequisites
The network clock source must be derived from an external source, for example, PSTN, PBX, or an ATM network. For digital voice ports, the clock source command in controller configuration mode configures the type of timing (internal or from the line) for each port that you designate as a primary source or backup for the network clock.
These commands allow maximum flexibility. For example, on a router with a multiflex trunk VWIC connected to an ATM network and a digital T1/E1 packet voice trunk network module connected to a PBX, you could set up network clocking in any of three ways:
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For a detailed discussion of clock sources on individual ports, see "Clock Sources on Digital T1/E1 Voice Ports" section in the "Configuring Voice Ports" chapter in the Cisco IOS Voice, Video, and Fax Configuration Guide, Release 12.2.
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To configure network clock timing and priority for ATM and digital voice ports on the specified platform, complete these steps.
Configuring Clock Source Internal
If you are configuring a clock with an internal source, follow these steps.
SUMMARY STEPS
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DETAILED STEPS
Step 1
enable
Example:Router> enable
Enables higher privilege levels, such as privileged EXEC mode.
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Step 2
configure terminal
Example:Router# configure terminal
Enters global configuration mode.
Step 3
Enters controller configuration mode on the T1 or E1 controller on the selected slot and port.
Step 4
clock source {line [primary] | internal}
Example:Router(config-controller)# clock source internal
Specifies the source from which the PLL on this port derives its clocking, and if the source is from the line, whether this port is the primary source. The default is line.
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Step 5
mode atm [aim aim-slot-number]
Example:Router(config-controller)# mode atm aim aim-slot-number
Specifies that the configuration on this controller is for ATM, using the AIM in the specified slot for ATM processing, and creates ATM interface 0.
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Step 6
exit
Example:Router(config-controller)# exit
Returns to global configuration mode.
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network-clock-participate [slot slot-number | wic wic-slot | aim aim-slot-number]
Example:Router(config)# network-clock-participate wic 0
Example:Router(config)# network-clock-participate slot 5
Example:Router(config)# network-clock-participate wic 0
Example:Router(config)# network-clock-participate aim 0
Allows the network module or VWIC in the specified slot to use the network clock for its timing.
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exit
Example:Router(config)# exit
Exits global configuration mode and completes the network clock source and participation configuration.
Configuring Clock Source Line
If you are configuring a clock with a line source, follow these steps.
SUMMARY STEPS
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mode cas
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ds0-group ds0-group timeslots timeslot-list type {e&m-immediate | e&m-delay | e&m-wink | fxs-ground-start | fxs-loop-start | fxo-ground-start | fxo-loop-start}
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pri-group timeslots timeslot-list
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DETAILED STEPS
Step 1
enable
Example:Router> enable
Enables privileged EXEC mode.
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Step 2
configure terminal
Example:Router# configure terminal
Enters global configuration mode.
Step 3
Enters controller configuration mode on the T1 or E1 controller on the selected slot and port.
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clock source {line [primary] | internal}
Example:Router(config-controller)# clock source line
Specifies the source from which the PLL on this port derives its clocking, and if the source is from the line, whether this port is the primary source. The default is line.
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Step 5
mode atm [aim aim-slot-number]
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mode cas
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ds0-group ds0-group timeslots timeslot-list type {e&m-immediate | e&m-delay | e&m-wink | fxs-ground-start | fxs-loop-start | fxo-ground-start | fxo-loop-start}
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pri-group timeslots timeslot-list
Example:Router(config-controller)# mode atm aim aim-slot-number
Example:Router(config-controller)# mode cas
Example:Router(config-controller)# ds0-group ds0-group timeslots timeslot-list type fxs-loop-start
Example:Router(config-controller)# pri-group timeslots timeslot-list
Specifies that the configuration on this controller is for ATM, using the AIM in the specified slot for ATM processing, and creates ATM interface 0.
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Step 6
exit
Example:Router(config-controller)# exit
Exits controller configuration mode.
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network-clock-participate [slot slot-number | wic wic-slot | aim aim-slot-number]
Example:Router(config)# network-clock-participate wic 0
Example:Router(config)# network-clock-participate slot 5
Allows the network module or VWIC in the specified slot to use the network clock for its timing.
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network-clock-select priority {t1 | e1} slot/port
Example:Router(config)# network-clock-select 1 e1 0/1
Specifies a port to be used as a timing source for the network clock and the priority level for the use of that port. The source that is given the highest priority is used first; if it becomes unavailable, the source with the second-highest priority is used, and so forth.
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Step 9
exit
Example:Router(config)# exit
Exits global configuration mode and completes the network clock source and participation configuration.
Configuring the AIM-ATM-VOICE-30 Card for High-Complexity Codecs and Time Slots
To configure the AIM-ATM-VOICE-30 card for high-complexity codecs and time slot, use the following commands.
SUMMARY STEPS
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DETAILED STEPS
Configuring Serial Data WAN
To configure serial data WAN, use the following commands.
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SUMMARY STEPS
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DETAILED STEPS
Step 1
enable
Example:Router> enable
Enables higher privilege levels, such as privileged EXEC mode.
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Step 2
configure terminal
Example:Router# configure terminal
Enters global configuration mode.
Step 3
Enters controller configuration mode on the E1 controller on the selected slot and port.
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clock source {line [primary] | internal}
Example:Router(config-controller)# clock source internal
Specifies the source from which the phase-locked loop (PLL) on this port derives its clocking, and if the source is from the line or whether this port is the primary source. The default is line.
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channel-group channel-group-number timeslots timeslot-range [speed bit-rate] aim aim-slot-number
Example:Router(config-controller)# channel-group 1 timeslots 1-5 aim 0
Directs HDLC traffic from the T1/E1 interface to the AIM-ATM-VOICE-30 digital signaling processor (DSP) card.
Step 6
ds0-group ds0-group-number timeslots timeslot-list type e&m-immediate-start
Example:Router(config-controller)# ds0-group 2 timeslots 6-12 type e&m-immediate-start
Adds DS0 groups on the T1/E1 controller and configures high-complexity time slots.
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Step 7
Router(config-controller)# pri-group timeslots 6-23
Adds PRI groups on the T1/E1 controller.
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Step 8
exit
Example:Router(config-controller)# exit
Exits controller configuration mode and completes the process for configuring serial data WAN.
Configuration Examples for Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module
This section provides the following configuration examples:
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Serial Data WAN Example
The following examples verifies a single serial data WAN configuration using the show running config command in privileged EXEC mode:
Router# show running configBuilding configuration...Current configuration : 1356 bytes!version 12.2service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname "buckskin-hc"!network-clock-participate wic 0network-clock-participate aim 0network-clock-select 1 E1 0/0voice-card 5dspfarm!ip subnet-zero!!isdn switch-type primary-qsigno voice hpi capture bufferno voice hpi capture destination!mta receive maximum-recipients 0!controller E1 0/0channel-group 1 timeslots 1-11 aim 0pri-group timeslots 12-31!controller E1 0/1!controller E1 0/3controller E1 0/2!interface FastEthernet0/0no ip addressshutdownduplex autospeed auto!interface Serial0/0:1ip address 175.0.0.1 255.0.0.0encapsulation ppp!interface Serial0/0:15no ip addressno logging event link-statusisdn switch-type primary-qsigisdn incoming-voice voiceno cdp enable!interface FastEthernet0/1ip address 1.10.10.1 255.0.0.0speed 100full-duplex!ip http serverip classless!call rsvp-sync!voice-port 0/0:15!mgcp profile default!dial-peer cor custom!dial-peer voice 40 potsdestination-pattern 427....direct-inward-dialport 0/0:15prefix 427!dial-peer voice 400 voipdestination-pattern 525....session target ipv4:1.10.10.2!line con 0exec-timeout 0 0line aux 0line vty 0 4login!endThe following example verifies a multiple serial data WAN configuration using the show running config command in privileged EXEC mode:
Router# show running configBuilding configuration...Current configuration : 1492 bytes!version 12.2service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname "buckskin-hc"!network-clock-participate wic 0network-clock-participate aim 0network-clock-select 1 E1 0/0voice-card 5dspfarm!ip subnet-zero!isdn switch-type primary-qsig!no voice hpi capture bufferno voice hpi capture destination!mta receive maximum-recipients 0!controller E1 0/0channel-group 1 timeslots 1-11 aim 0pri-group timeslots 12-31!controller E1 0/1channel-group 1 timeslots 1-31 aim 0!controller E1 0/3!controller E1 0/2!interface FastEthernet0/0no ip addressshutdownduplex autospeed auto!interface Serial0/0:1ip address 172.0.0.1 255.0.0.0encapsulation ppp!interface Serial0/0:15no ip addressno logging event link-statusisdn switch-type primary-qsigisdn incoming-voice voiceno cdp enable!interface FastEthernet0/1ip address 10.10.10.1 255.0.0.0speed 100full-duplex!interface Serial0/1:1ip address 175.5.0.1 255.0.0.0encapsulation frame-relay!ip http serverip classless!call rsvp-sync!voice-port 0/0:15!mgcp profile default!dial-peer cor custom!dial-peer voice 40 potsdestination-pattern 427....direct-inward-dialport 0/0:15prefix 427!dial-peer voice 400 voipdestination-pattern 525....session target ipv4:10.10.10.2!line con 0exec-timeout 0 0line aux 0line vty 0 4login!endHigh-Complexity Codecs Configuration Example
To check that high-complexity codecs have been configured, use the show running config command in privileged EXEC mode:
Router# show running-configBuilding configuration...Current configuration : 1276 bytes!version 12.2service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname "router-hc"!network-clock-participate wic 0network-clock-participate aim 0network-clock-select 1 E1 0/0voice-card 5codec complexity highdspfarm!ip subnet-zero!isdn switch-type primary-qsigno voice hpi capture bufferno voice hpi capture destination!mta receive maximum-recipients 0!controller E1 0/0pri-group timeslots 1-16!controller E1 0/1!controller E1 0/3!controller E1 0/2!interface FastEthernet0/0no ip addressshutdownduplex autospeed auto!interface Serial0/0:15no ip addressno logging event link-statusisdn switch-type primary-qsigisdn incoming-voice voiceno cdp enable!interface FastEthernet0/1ip address 1.10.10.1 255.0.0.0speed 100full-duplex!ip http serverip classless!call rsvp-sync!voice-port 0/0:15!mgcp profile default!dial-peer cor custom!dial-peer voice 40 potsdestination-pattern 427....direct-inward-dialport 0/0:15prefix 427!dial-peer voice 400 voipdestination-pattern 525....session target ipv4:0.10.10.2!line con 0exec-timeout 0 0line aux 0line vty 0 4login!endVerifying Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module
The following sections contain examples that you can use to verify your configuration.
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Checking Clock Resources
To display the current chosen clock and the list of all sources of network clocks according to their priority, use the show network-clocks command in privileged EXEC mode:
Router# show network-clocksNetwork Clock Configuration---------------------------Priority Clock Source Clock State Clock Type3 E1 6/2 GOOD E15 T1 2/0 GOOD T19 Backplane Good PLLCurrent Primary Clock Source---------------------------Priority Clock Source Clock State Clock Type3 E1 6/2 GOOD E1Checking Voice DSP Configuration
To check the voice DSP configuration, use the show voice dsp command in privileged EXEC mode. This example shows one DSP channel allocated from this voice card.
DSP DSP DSPWARE CURR BOOT PAK TX/RXTYPE NUM CH CODEC VERSION STATE STATE RST AI VOICEPORT TS ABORT PACK COUNT==== === == ======== ======= ===== ======= === == ========= == ===== ============C5421000 00 {high} 3.6.14 IDLE idle 0 0 0/0:0 01 0 5313/1516Checking the Serial Interface
Use the show interface serial command in privileged EXEC mode to check configuration on the serial interface. The following example uses serial slot 0, port 0, and channel 3:
Router# show interface serial 0/0:3Serial0/0:3 is up, line protocol is upHardware is ATM AIM SERIALInternet address is 20.0.0.1/16MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec,reliability 255/255, txload 1/255, rxload 1/255Encapsulation PPP, loopback not setLCP OpenOpen:IPCP, CDPCPLast input 00:00:09, output 00:00:09, output hang neverLast clearing of "show interface" counters 18:36:25Input queue:0/75/0/0 (size/max/drops/flushes); Total output drops:0Queueing strategy:weighted fairOutput queue:0/1000/64/0 (size/max total/threshold/drops)Conversations 0/1/256 (active/max active/max total)Reserved Conversations 0/0 (allocated/max allocated)Available Bandwidth 48 kilobits/sec5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 0 bits/sec, 0 packets/sec6696 packets input, 446400 bytes, 0 no bufferReceived 0 broadcasts, 0 runts, 0 giants, 0 throttles0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort6697 packets output, 460924 bytes, 0 underruns0 output errors, 0 collisions, 0 interface resets0 output buffer failures, 0 output buffers swapped out0 carrier transitionsTimeslot(s) Used:4, Transmitter delay is 0 flagsYou can also use the show controller serial command in privileged EXEC mode to check configuration on the serial interface. The following example uses serial slot 0, port 0, and channel 3:
Router# show controller serial 0/0:3Interface Serial0/0:3 is upHardware is ATM AIM SERIALhwidb=0x82C1B768, sardb=0x826404A4slot 0, unit 0, subunit 0Current (mxt5100_t)sardb:Ind_Q(0x3D53580), Ind_Q_idx(695), Ind_Q_size(30000)Cmd_Q(0x3D4E720), Cmd_Q_idx(359), Cmd_Q_size(20000)Inpool(0x3B9E1A0), Inpool_size(4096)Outpool(0x3D1B080), Outpool_size(4096)Localpool(0x3D20000), Localpool_size(256)StorBlk(0x3BA7000), host_blk(0x3BA4840), em_blk(0x3BA4900)tx_buf_desc(0x3D476A0), tx_free_desc_idx (1023)num_fallback(0)MXT5100 Port Info:Port Number (4), Port ID (0xE05)Interface Number (0), Interface ID (0xF5E0)Port Type 2, Port Open Status SUCCESSHDLC channels opened(1)Port counters:Tx Packets:50686, Rx Packets:42864Tx Bytes:0, Rx Bytes:0Discards:No Resource:0, Protocol Errors 4MXT5100 Channel Info:HDLC Channel Info (0):Chan_ID (0xF25), Open Status SUCCESStx_limited=0(8)Where to Go Next
For more information about the AIM-ATM-VOICE-30 card, refer to the AIM-ATM, AIM-VOICE-30, and AIM-ATM-VOICE-30 on the Cisco 2600 Series and Cisco 3660 feature document on Cisco.com.
Additional References
The following sections provide additional references related to the Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module feature:
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Related Documents
How to configure AIM-ATM, AIM-VOICE-30, and AIM-ATM-VOICE-30 on the Cisco 2600 series and the Cisco 3660
AIM-ATM, AIM-VOICE-30, and AIM-ATM-VOICE-30 on the Cisco 2600 Series and Cisco 3660
ATM and IMA for the Cisco 2600 series and the Cisco 3660
ATM Software Segmentation and Reassembly (SAR), Cisco IOS Release 12.2(2)XB
Cisco 2600 series
Cisco 3600 series
Cisco 3700 series
Cisco 3700 Series Routers documentation index on Cisco.com
How to configure your Cisco router or access server to support voice, video, and fax applications.
Cisco IOS Voice, Video, and Fax Configuration Guide, Release 12.2 T
How to use Cisco IOS commands to support voice, video, and fax applications.
Cisco IOS Voice, Video, and Fax Command Reference, Release 12.2 T
Cisco IOS WAN commands and reference material
Cisco IOS Wide-Area Networking Command Reference, Release 12.2 T
Clock sources on individual ports
Clock Sources on Digital T1/E1 Voice Ports" section in the "Configuring Voice Ports" chapter of the Cisco IOS Voice, Video, and Fax Configuration Guide, Release 12.2
Cisco IOS software configuration
Configuration guide and command reference indexes, Cisco IOS Release 12.2 and 12.2 T
How to configure VoATM with AAL2 or AAL5 encapsulation
Configuring AAL2 and AAL5 for the High-Performance Advanced Integration Module on the Cisco 2600 Series, Cisco IOS Release 12.2(2)XA
How to configure Inverse Multiplexing over ATM (IMA)
Configuring ATM" chapter in the Cisco IOS Wide-Area Networking Configuration Guide, Release 12.2
How to configure ISDN.
Configuring ISDN Interfaces for Voice" chapter in the Cisco IOS Voice, Video, and Fax Configuration Guide, Release 12.2.
How to configure the G.168 extended echo canceller
How to install AIM modules
Installing the High Performance ATM Advanced Integration Module in Cisco 2600 Series Routers
How to configure the MIX module on the Cisco 3660
Multiservice Interchange (MIX) for Cisco 2600 and 3600 Series Multiservice Platforms, Release 12.2(4)T.
Cisco IOS Release 12.2
How to configure VoIP on Cisco 2600 and Cisco 3600 series
Voice over IP for the Cisco 2600 and Cisco 3600 series routers documentation index on Cisco.com
Standards
No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature.
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MIBs
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:
http://tools.cisco.com/ITDIT/MIBS/servlet/index
If Cisco MIB Locator does not support the MIB information that you need, you can also obtain a list of supported MIBs and download MIBs from the Cisco MIBs page at the following URL:
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml
To access Cisco MIB Locator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check will verify that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password will be e-mailed to you. Qualified users can establish an account on Cisco.com by following the directions found at this URL:
RFCs
No new or modified RFCs are supported by this feature, and support for existing RFCs has not been modified by this feature.
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Technical Assistance
Command Reference
This section documents a modified command. All other commands used with this feature are documented in the Cisco IOS Release 12.2 T command reference publications.
channel-group
To configure serial WAN on a T1 or E1 interface, use the channel-group command in controller configuration mode. To unassign a channel group, use the no form of this command.
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Cisco 2600 Series, Cisco 3660, Cisco 3725, and Cisco 3745
channel-group channel-group-number timeslots range [speed bit-rate] aim [aim-slot-number]
no channel-group channel-group-number
Cisco 2611 (Cisco Signaling Link Terminal or SLT)
channel-group channel-number
no channel-group channel-number
Cisco AS5350 and Cisco AS5400 Series
channel-group channel-group-number
no channel-group channel-group-number
Cisco MC3810
channel-group channel-number timeslots range [speed bit-rate}]
no channel-group [channel-number timeslots range]
Syntax Description
Defaults
The T1/E1 line is connected to the motherboard or network module (NM) serial communication controller (SCC) by default on the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, and Cisco 3745 routers.
The serial interface object encapsulation is set to HDLC on a Cisco AS5350 or Cisco AS5400 network access server (NAS).
Command History
Usage Guidelines
A channel group is created using Advanced Integration Module (AIM) HDLC resources when a channel-group command with the aim keyword is parsed during system initialization or when the command is entered during configuration. You must specify the aim keyword under a T1/E1 controller port to direct HDLC traffic from the T1/E1 interface to the AIM-ATM-VOICE-30 card on the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, and Cisco 3745.
If previous channel-group commands are configured with the aim keyword, subsequent channel-group commands without the aim keyword are rejected. Similarly, if a regular channel-group command is followed by another channel-group command with the aim keyword implemented, the second command is rejected on the Cisco 2600 and Cisco 2600XM.
A channel group using AIM HDLC resources is deleted only when a no channel-group command is entered.
When using the Integrated Voice and Data WAN on T1/E1 Interfaces Using the AIM-ATM-VOICE-30 Module feature, by default, the channel-group command on a NAS sets the serial interface object encapsulation to HDLC. You can override the default with the encapsulation ppp or frame relay commands for that serial interface object.
When using the Integrated Signaling Link Terminal feature, by default, the channel-group command on a NAS sets the serial interface object encapsulation to HDLC. You must override the default by entering the encapsulation ss7 command for that serial interface object. Once this is done, encapsulation cannot be changed again for that object. The SS7 encapsulation option is new to the Integrated Signaling Link Terminal feature and is only available for interface serial objects created by the channel-group command. The Integrated Signaling Link Terminal feature added SLT functionality on Cisco AS5350 and Cisco AS5400 platforms.
A digital SS7 link can be deleted by entering the no channel-group channel-group-number command on the associated T1/E1 controller. The link must first be stopped using the no shutdown command. It is not necessary to remove the channel ID association first.
Use the channel-group command in configurations where the router or access server must communicate with a T1 or E1 fractional data line. The channel group number may be arbitrarily assigned and must be unique for the controller. The time slot range must match the time slots assigned to the channel group. The service provider defines the time slots that comprise a channel group.
Note
Valid values for the bit-rate argument have changed. If you specify 56 kbps, the channel group is limited to 14 channels on the Cisco MC3810 MultiFlex Trunk (MFT). Because the 56 keyword is the default, specify the 64 keyword when you need more than 14 channels.
The channel group number can be 0 or 1 on the Cisco SLT (Cisco 2611).
The channel-group command also applies to Voice over Frame Relay, Voice over ATM, and Voice over HDLC on the Cisco MC3810.
Examples
The following example explicitly sets the encapsulation type to PPP to override the HDLC default:
Router# configure terminalRouter(config)# controller t1 6/0Router(config-controller)# channel-group 2 timeslots 3 aim 0Router(config-controller)# exitRouter(config)# interface serial 6/0:2Router(config-if)# encapsulation pppRouter(config-if)# ip address 12.0.0.1 255.0.0.0Router(config-if)# no shutdownRouter(config-if)# endThe following example defines three channel groups using the Integrated Signaling Link Terminal feature. Channel group 0 consists of a single time slot, channel group 8 consists of seven time slots and runs at a speed of 64 kbps per time slot, and channel group 12 consists of a single time slot.
Router(config-controller)# channel-group 0 timeslots 1 aim 0Router(config-controller)# channel-group 8 timeslots 5,7,12-15,20 aim 0 speed 64Router(config-controller)# channel-group 12 timeslots 2 aim 0Related Commands
invert data
Enables channel inversion.
voice-card
Configures a card with voice processing resources and enters voice card configuration mode.
network-clock-participate
To allow ports on a specified network module or voice/WAN interface card (VWIC) to use the network clock for timing, use the network-clock-participate command in global configuration mode. To restrict the device to use only its own clock signals, use the no form of this command.
network-clock-participate [slot slot-number | wic wic-slot | aim aim-slot-number]
no network-clock-participate [slot slot-number | wic wic-slot | aim aim-slot-number]
Syntax Description
Defaults
No network clocking is enabled, and interfaces are restricted to using the clocking generated on their own modules.
Command Modes
Global configuration
Command History
Usage Guidelines
This command is used on the Cisco 2600 series or Cisco 2600XM with an AIM for ATM segmentation. This command is used on the Cisco 3660, Cisco 3725, and Cisco 3745 with reassembly or digital signal processing.
On the Cisco 3700 series, you must use the network-clock-participate command and either the wic wic-slot keyword and argument or the slot slot-number keyword and argument.
This command applies to any network module with T1/E1 controllers to provide clocks from a central source (AIM for the Cisco 2600 or MIX module for the Cisco 3660) to the network module and to the port on the network module. That port can be selected as the clock source with the network-clock-select command to supply clock resources to other ports or network modules that choose to participate in network clocking with the network-clock-participate command. This command synchronizes the clocks for two ports.
Note
Note
Note
For the Cisco 2610, you must configure the WIC number; for the Cisco 3660, you must configure the slot number; and for the Cisco 2691, Cisco 3725, and Cisco 3745, you must configure the WIC and the AIM number.
Examples
The following example configures the network module in slot 5 to participate in network clocking on a Cisco 3660 with a MIX module:
network-clock-participate slot 5network-clock-select 1 e1The following example specifies that the AIM participates in network clocking and selects port E1 0/1 to provide the clock signals on a Cisco 3700 series router:
Router(config)# network-clock-participate wic 0Router(config)# network-clock-participate aim 0Router(config)# network-clock-select 2 E1 0/1The following example specifies the slot number that participates in network clocking and selects port E1 5/0 on a Cisco 3660:
Router(config)# network-clock-participate slot 5Router(config)# network-clock-select 1 E1 5/0The following example specifies the WIC number that participates in network clocking and selects port E1 0/0 on a Cisco 2600 series router:
Router(config)# network-clock-participate wic 0Router(config)# network-clock-select 1 E1 0/0
Related Commands
Glossary
AAL—ATM adaptation layer. Service-dependent sublayer of the data link layer. The AAL accepts data from different applications and presents it to the ATM layer in the form of 48-byte ATM payload segments. AALs consist of two sublayers: the convergence sublayer (CS) and the segmentation and reassembly sublayer (SAR). AALs differ on the basis of the source-destination timing used, whether they use constant bit rate (CBR) or variable bit rate (VBR), and whether they are used for connection-oriented or connectionless mode data transfer. At present, the four types of AAL recommended by the ITU-T are AAL1, AAL2, AAL3/4, and AAL5.
AAL2—ATM adaptation layer 2. One of four AALs recommended by the ITU-T. AAL2 is used for connection-oriented services that support a variable bit rate, such as some isochronous video and voice traffic.
AAL5—ATM adaptation layer 5. One of four AALs recommended by the ITU-T. AAL5 is used for connection-oriented services that support a variable bit rate, such as some isochronous video and voice traffic.
AIM—Advanced Integration Module. Hardware with components that provide specialized processing.
ATM—Asynchronous Transfer Mode. International standard for cell relay in which multiple service types (such as voice, video, or data) are conveyed in fixed-length (53-byte) cells. Fixed-length cells allow cell processing to occur in hardware, thereby reducing transit delays. ATM is designed to take advantage of high-speed transmission media such as E3, SONET, and T3.
CAS—channel associated signaling. The transmission of signaling information within the voice channel. CAS signaling often is referred to as robbed-bit signaling because user bandwidth is being robbed by the network for other purposes.
CRC—cyclic redundancy check. Error-checking technique in which the frame recipient calculates a remainder by dividing frame contents by a prime binary divisor and compares the calculated remainder to a value stored in the frame by the sending node.
DS0—digital service-zero (0). Single time slot on a DS1 (also known as T1) digital interface; that is, a 64-kbps, synchronous, full-duplex data channel, typically used for a single voice connection on a PBX. See also DS1 and PBX.
DSP—digital signal processor. A DSP segments the voice signal into frames and stores them in voice packets.
DSP resource pool—A collection of DSP resources available to a network module or VWIC on the router. These resources are found on another network module or on an AIM.
DTMF—dual tone multifrequency.
E&M—recEive and transMit (or ear and mouth).
FCS—frame check sequence.
FPGA—Field-Programmable Gate Array. A programmable memory device.
HCMs—high-performance voice compression modules.
HDLC—high-level data link control. Bit-oriented synchronous data link layer protocol developed by ISO. Derived from SDLC, HDLC specifies a data encapsulation method on synchronous serial links using frame characters and checksums.
IMA—inverse multiplexing over ATM, a standard defined by the ATM Forum. IMA provides economical, high-bandwidth ATM WAN access by enabling multiple T1 or E1 ATM links to be combined and to appear as one physical link to higher layers.
MGC—Media Gateway Controller.
MF—multifrequency tones.
MIX—multiservice interchange. Feature that allows TDM connections between MIX-enabled ports.
PBX—private branch exchange. Privately owned central switching office.
PDU—protocol data unit. Another name for packet.
PLL—phase-locked loop. An electronic circuit that synchronizes itself to an external reference signal. It locks itself onto the phase or onto the average frequency of the incoming signal, dynamically tracks it, and outputs a related but more useful version. Among the typical applications of a PLL in digital circuits are synchronizing a system to a single clock source and jitter filtering (removing phase noise).
PPP—Point-to-Point Protocol.
PRI—Primary Rate Interface. ISDN interface to primary rate access. Primary rate access consists of a single 64-kbps D channel plus 23 (T1) or 30 (E1) B channels for voice or data.
PSTN—public switched telephone network. General term referring to the variety of telephone networks and services in place worldwide. Sometimes called plain old telephone service (POTS).
SAR—segmentation and reassembly. In ATM, the processes of dividing PDUs into 48-byte pieces of payload data at the source for transport, and then reassembling them into a stream at the destination.
VIC—voice interface card. Provides voice-specific ports, including foreign exchange station (FXS), foreign exchange office (FXO), ear and mouth (E&M), and basic rate interchange (BRI).
VWIC—A card that can operate as a VIC or as a WIC, providing physical connection to WAN or voice networks.
VoIP—Voice over IP. The ability to carry normal telephony-style voice over an IP-based Internet with circuit-based telephone-like functionality, reliability, and voice quality. VoIP is a blanket term that generally refers to the Cisco standards-based (H.323, and so forth) approach to IP voice traffic.
WIC—wide-area network interface card.
Note
Guest
