This document provides a sample configuration for the second-generation 1- and 2-port T1/E1 multiflex trunk (MFT) voice/WAN interface cards (multiflex VWICs), which support data and voice applications in Cisco multiservice routers. The multiflex VWIC combines WAN interface card (WIC) and voice interface card (VIC) functionality to provide the following improvements:
Before attempting this configuration, please ensure that you meet the following prerequisites:
To enable independent clocking mode, use the keyword independent in the clock source command. The independent keyword expands on the clock source internal and clock source line commands to specify that the port can operate on an independent clocking domain. Prior to the addition of the independentkeyword, port 0 was the default primary clock source, and port 1 was the default secondary clock source and is loop-timed. With independent clocking enabled, this dependency no longer exists, so the independent keyword means that both ports can be independently clocked.
When independent clocking is configured, the controller will support only one channel group and no voice applications. If more than one channel group is configured, the following error message occurs:
channel-group 2 timeslots 3 %Channel-group already created. %Only 1 channel-group can be configured with independent clocking. %Insufficient resources to create channel group
When you are configuring the clock source independent and no clock source independent commands, the channel group has to be removed from the configuration.
The information in this document is based on combinations of the network modules supported by the second-generation 1- and 2-port T1/E1 multiflex trunk voice/WAN interface cards. If your network module is:
Note: For this feature to work properly, the network modules listed here must be installed in one of the following platforms: Cisco 2600XM, Cisco 2691, Cisco 2800 series, Cisco 3662 (telco models), Cisco 3700 series, and Cisco 3800 series.
For more information on document conventions, see the Cisco Technical Tips Conventions.
The second-generation 1- and 2-port T1/E1 multiflex trunk voice/WAN interface cards have the following key features:
The following list shows the names and descriptions of the modules with second-generation 1- and 2-port T1/E1 multiflex trunk voice/WAN interface cards.
Note: These baseboards can also provide hardware echo cancellation if there is a daughter card (EC-MFT-32 or EC-MFT-64) mounted on the baseboard. For more information, refer to the Voice Port Configuration Guide on Cisco.com.
Note: Although unstructured G.703 operation is particular to E1 operation, the VWIC2-1/2MFT-G703 cards also support structured T1 operation.
The drop and insert feature enables the removal of DS0 time slots from one E1 interface and insertion into time slots of the other E1 interface. This feature is available in VWIC applications. If you configure drop and insert, be sure that the E1 framing under the controllers involved (the tdm-groups configuration location) is the same. If you use different frame types, the signaling bits may not be read properly. This failure occurs during the drop of a channel from one controller and insertion into a channel from another controller. Drop and insert time slots do not need to be contiguous.
In this section, you are presented with the information to configure the features described in this document.
This document uses the network setup shown in the diagram below.
This document uses the configurations shown below.
Router# show run Building configuration... version 12.4 card type t1 0 0 ! no network-clock-participate wic 0 ip subnet-zero ip cef ! no ip dhcp use vrf connected ! controller t1 0/0 framing esf linecode b8zs channel-group 1 timeslots 1-12 speed 64 tdm-group 2 timeslots 13-24 ! controller t1 0/1 framing esf linecode b8zs channel-group 1 timeslots 1-12 speed 64 tdm-group 2 timeslots 13-24 ! ! interface Serial0/0:1 ip address 10.0.0.1 255.255.255.0 ! interface Serial0/1:1 ip address 10.0.0.2 255.255.255.0 ! connect t1-xconnect T1 0/0 2 T1 0/1 2 ! !
Router# show run Building configuration... version 12.4 service timestamps debug datetime msec localtime show-timezone service timestamps log datetime msec localtime show-timezone service password-encryption ! hostname vnt-2620XM-55a ! boot-start-marker boot-end-marker ! card type t1 0 0 logging buffered 64000 debugging enable password 7 095B59 ! no aaa new-model ! resource policy ! clock timezone EST -5 clock summer-time EDT recurring no network-clock-participate slot 1 network-clock-participate wic 0 network-clock-select 1 T1 0/0 voice-card 0 dspfarm no local-bypass ! voice-card 1 no dspfarm ! ip subnet-zero ip cef ! ! no ip domain lookup ip host redclay 172.18.108.26 ! ! ! controller T1 0/0 framing esf linecode b8zs ds0-group 0 timeslots 1-24 type fxo-ground-start ! controller T1 0/1 framing sf linecode ami ! controller T1 1/0 framing esf linecode b8zs ds0-group 0 timeslots 1 type e&m-immediate-start ds0-group 1 timeslots 2 type e&m-immediate-start ! ! ! interface FastEthernet0/0 ip address 14.80.55.38 255.255.255.0 duplex auto speed auto ! ip default-gateway 14.80.55.1 ip classless ip route 0.0.0.0 0.0.0.0 FastEthernet0/0 ! ip http server ! connect TieA voice-port 1/1/0 T1 1/0 0 ! ! connect TieB voice-port 1/1/1 T1 1/0 1 ! ! control-plane ! ! ! voice-port 1/0:0 ! voice-port 1/0:1 ! voice-port 1/1/0 signal immediate ! voice-port 1/1/1 signal immediate ! ! dial-peer cor custom ! ! line con 0 exec-timeout 0 0 line aux 0 line vty 0 4 exec-timeout 0 0 password 7 131200 login ! ntp clock-period 17180246 ntp server 172.18.106.15 ! end
There is currently no verification procedure available for this configuration.
There is currently no specific troubleshooting information available for this configuration.
RFC 1406, Definitions of Managed Objects for the DS1 and E1 Interface Types
Cisco IOS Voice Command Reference, Release 12.3 T
Cisco IOS Voice Port Configuration Guide, Release 12.4 T
Revision | Publish Date | Comments |
---|---|---|
1.0 |
07-Feb-2014 |
Initial Release |