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This document explains how you can configure digital T1/E1 packet voice trunk network modules on Cisco 2600 and 3600 routers to route Wide Area Network (WAN) data traffic and includes the following sections:
Cisco digital T1/E1 packet voice trunk network modules support voice and data applications in Cisco 2600 and 3600 series routers. With Cisco IOS release 12.1(2)XH, the digital T1/E1 packet voice trunk network modules provide WAN connections in addition to voice connections and digital cross-connect.
The digital T1/E1 packet voice trunk network modules support T1/E1 applications, including fractional use. The T1 version integrates a fully managed data service unit/channel service unit (DSU/CSU), and the E1 version includes a fully managed DSU. The digital T1/E1 packet voice trunk network modules provide per-channel T1/E1 data rates of 64 kbps for WAN services (Frame Relay or leased line)
The ability of the digital T1/E1 packet voice trunk network module to support WAN data traffic in addition to voice traffic has the following benefits:
Because the digital T1/E1 packet voice trunk network module support both WAN data traffic and voice traffic, they provide the following benefits of multifunction support for multiplexed voice and data, and voice:
The following restrictions apply to digital T1/E1 packet voice trunk network module configurations:
Digital T1/E1 Packet Voice Trunk Network Modules requires 2-port T1 Multiflex VWIC for operation. For more information about these modules, see Configuring Digital T1 Packet Voice Trunk Network Modules on Cisco 2600 and 3600 Series Routers and Configuring Digital E1 Packet Voice Trunk Network Modules on Cisco 2600 and 3600 Series Routers.
The following documents provide additional information about installing and configuring digital T1 packet voice trunk network modules:
The following Cisco IOS Release 12.1 documents provide information that can help you use digital T1 packet voice trunk network modules:
This feature is supported on the following platforms:
Digital T1 packet voice trunk network modules support the standards, MIBs, and RFCs listed in this section.
RFC 1406
Digital T1 packet voice trunk network modules require specific service, software, and hardware:
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Note You can install one Digital T1 Packet Voice Trunk Network Module in a Cisco 2600 series router or a Cisco 3620 router. A Cisco 3640 router can support three modules, and you can install as many as six modules in a Cisco 3660 router. |
Multiservice Applications Configuration Guide and Multiservice Applications Command Reference for Cisco IOS Release 12.1 provide information about setting up voice networks.
Follow this procedure to configure your digital T1 packet voice trunk network module for WAN data traffic. Skip Steps 1 and 2 if you are already in controller configuration mode.
For detailed information about configuring voice ports on a Digital T1/E1 Packet Voice Trunk Network Module, see theConfiguring Digital T1 Packet Voice Trunk Network Modules on Cisco 2600 and 3600 Series Routers online document and theConfiguring Digital E1 Packet Voice Trunk Network Modules on Cisco 2600 and 3600 Series Routers online document.
Repeat the steps following Step 2 for each controller.
| Command | Purpose | |
|---|---|---|
Step 1 | Router# configure terminal | Skip this step if you are already in controller configuration mode. Enter global configuration mode. |
Step 2 | Router(config)# controller {T1 | E1} slot/port
| Skip this step if you are already in controller configuration mode. Enter controller configuration mode for the T1 or E1 controller at the specified slot/port location. |
Step 3 | Router(config-controller)# channel-group channel-group-no timeslots timeslot-list [speed [48|56|64]] | Enter this command to set up channel groups for WAN data services with a 2-port Multiflex Drop-and-Insert VWIC. channel-group-no is a value from 0 to 23 for T1 and from 0 to 30 for E1. timeslot-list is a single number, numbers separated by commas, or a pair of numbers separated by a hyphen to indicate a range of timeslots. The valid range is from 1 to 24 for T1. For E1, the range is from 1 to 31. The optional speed setting defaults to 56 Kbps for T1 and 64 Kbps for E1. |
Step 4 | Router(config-controller)# no shutdown | Activate the controller. |
Step 5 | Router(config-controller)# exit | Exit controller configuration mode. |
Step 6 | Router(config)# interface serial slot/port:channel-group | Enter interface configuration mode for a serial interface that you specify by slot and port. The :channel-group portion of the command is only required for channelized T1 or E1 interfaces; its value is always 0 for Multiflex VWIC support. (For setting up channelized interfaces, see Dial Solutions Configuration Guide for Cisco IOS Release 12.1.) |
Step 7 | Router(config-if)# encapsulation {atm-dxi | hdlc | frame-relay | ppp | sdlc-primary | sdlc-secondary | smds | stun | x25}
| Configure synchronous serial encapsulation. See the Dial Solutions Configuration Guide for Cisco IOS Release 12.1 for more information. |
Step 8 | Router(config-if)# ip address ip-address mask | Assign the IP address and subnet mask to the interface. |
Router# show controller T1 1/0
T1 1/0 is up.
Applique type is Channelized T1
Cablelength is short 133
Description: T1 WIC card Alpha
No alarms detected.
Framing is ESF, Line Code is B8ZS, Clock Source is Line Primary.
Data in current interval (1 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Step 2 The privileged EXEC show connection all command displays the status of T1 or E1 controller groups and how they are set up:
Router# show connection all ID Name Segment 1 Segment 2 State ======================================================================== 1 Test -T1 1/0 01 -T1 1/1 02 ADMIN UP
To verify serial interface configuration, enter the privileged EXEC command show interfaces serial, which shows the status of all serial interfaces or of a specific serial interface, as in the following example. You can use this command to check the encapsulation, IP addressing, and other settings:
Router #show interface serial0/0:0
Serial0/0:0 is up, line protocol is up
Hardware is QUICC Serial
Internet address is 1.156.1.1/24
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive not set
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output 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)
5 minute input rate 1000 bits/sec, 1 packets/sec
5 minute output rate 1000 bits/sec, 1 packets/sec
637 packets input, 64736 bytes, 0 no buffer
Received 181 broadcasts, 0 runts, 5 giants, 0 throttles
3617 input errors, 1506 CRC, 1646 frame, 0 overrun, 0 ignored, 0 abort
682 packets output, 67213 bytes, 0 underruns
0 output errors, 0 collisions, 1070 interface resets
0 output buffer failures, 0 output buffers swapped out
13 carrier transitions
Timeslot(s) Used:1-24, Transmitter delay is 0 flags
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Note For additional examples, see Configuring Digital T1 Packet Voice Trunk Network Modules on Cisco 2600 and 3600 Series Routers. |
The channel-group 0 command is configured in such a way that the service provider can send Frame-Relay link management information (LMI) on the T1 or E1 controller for Frame-Relay data services. This command automatically creates interface serial 1/0:0.
Interface serial 1/0:0 is where all WAN and Layer 3 protocol details are configured, for example, Frame Relay encapsulation or IP addresses.
hostname RTR-A ! controller T1 1/0 framing esf linecoding b8zs channel-group 0 timeslots 1-24 ! interface serial 1/0:0 encapsulation frame-relay ! interface serial 1/0:1.1 ip address 209.165.200.252 255.255.255.224 frame-relay interface-dlci 100 ! interface ethernet 0 ip address 209.165.200.250 255.255.255.224 ! router eigrp 1 network 209.165.200.224 ! | hostname RTR-B ! controller T1 1/0 framing esf linecoding b8zs channel-group 0 timeslots 1-24 ! interface serial 1/0:0 encapsulation frame-relay ! interface serial 1/0:1.1 ip address 209.165.200.253 255.255.255.224 frame-relay interface-dlci 100 ! interface ethernet 0 ip address 209.165.201.1 255.255.255.224 ! router eigrp 1 network 209.165.200.224 network 209.165.201.0 ! |
hostname RTR-A ! controller E1 1/0 framing crc4 linecoding hdb3 channel-group 0 timeslots 1-31 ! interface serial 1/0:0 encapsulation frame-relay ! interface serial 1/0:1.1 ip address 209.165.200.252 255.255.255.224 frame-relay interface-dlci 100 ! interface ethernet 0 ip address 209.165.200.250 255.255.255.224 ! router eigrp 1 network 209.165.200.224 ! | hostname RTR-B ! controller E1 1/0 framing crc4 linecoding hdb3 channel-group 0 timeslots 1-31 ! interface serial 1/0:0 encapsulation frame-relay ! interface serial 1/0:1.1 ip address 209.165.200.253 255.255.255.224 frame-relay interface-dlci 100 ! interface ethernet 0 ip address 209.165.201.1 255.255.255.224 ! router eigrp 1 network 209.165.200.224 network 209.165.201.0 ! |
New or modified commands are included in the Command Reference section of Configuring Digital T1 Packet Voice Trunk Network Modules on Cisco 2600 and 3600 Series Routers. All other commands used with this feature are documented in the Cisco IOS Release 12.1 command references.
Posted: Tue Jun 20 19:10:25 PDT 2000
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