"VWIC2-2MFT-G703" card configuration

Unanswered Question
Jan 8th, 2010

Hi All,

I have one "NM-4E1-IMA" card installed on 3725 router. Now I have installed new "VWIC2-2MFT-G703" card in the same router with the latest IOS 12.4T (Which supports this card).

Now I have a question regarding terminating the new E1 DATA circuit. Old "NM-4E1-IMA" card configuration is attached and need help for the configuration on new "VWIC2-2MFT-G703" card's E1 interface for data circuit.


Old "NM-4E1-IMA" card configuration


controller E1 0/0

pri-group timeslots 1-31 service mgcp

description : PRI Controller Acc Number 58657600


interface ATM1/1

description AT&T MPLS E1 (WANCKT_APAC) bjbjMV135

bandwidth 2048

no ip address

ip route-cache flow

atm vc-per-vp 256

no atm ilmi-keepalive


impedance 120-ohm

no clns route-cache


interface ATM1/1.77 point-to-point

description ePVC to AT&T PER VPI/VCI 1/77

bandwidth 2000

ip address 10.254.162.x

pvc att-per 1/77

  vbr-nrt 1792 1792 1

  tx-ring-limit 3

  no ilmi manage

  oam-pvc manage

  oam ais-rdi 10 3

  encapsulation aal5snap

  service-policy output mpls-cos



New "VWIC2-2MFT-G703" card configuration



PLEASE help me ....



I have this problem too.
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Giuseppe Larosa Sat, 01/09/2010 - 02:22

Hello Nitin,

what the new card should do? data services or voice services?

In any case, the first step with these cards is to configure the card type as E1 or T1.

card type {e1 | t1} slot subslot



This can create an E1 controller object that you can configure as usual. The channel-group defined within E1 controller creates a serial interface object that you can use for data services.

Other important aspects (very important for voice applications) is clocking. This is controlled by command

[no] network-clock-participate wic  wic#

You can see a whole example for T1 here:


Hope to help

nitsg.gupta Sun, 01/10/2010 - 23:13

Hi Giuseppe,

Thanks for replying,

it was helpfull but I need sample config for G.703 (Data E1) not for T1, which was not in that doc.

I also have a sample doc for G.703 but still confuse about the configuration.


Right now the link is terminating on IMA card which creates ATM interfaces and we want to terminate it on G.703 card as data E1. So in this case what the configuration should be?

would you plese help me get the correct config.

plz help......



Giuseppe Larosa Mon, 01/11/2010 - 10:17

Hello Nitin,

take in account Paolo's advice if your objective is to use the E1 as an ATM E1 you need additional hardware to provide ATM intelligence and capabilities.

about how to configure the E1

! the following creates E1 controller object it says to the module to act as an E1

card-type e1 slot# sublstlo#

controller e1 slot#/subslot#

! here E1 specific parameters apply to be checked with provider the following are the defaults

framing crc4

linecode hdb3

! the following is needed for G.703

channel-group 0 unframed

all this is explained in the link you have found.

Also the clocking aspects are very important as explained in another recent thread about clocking aspects of ATM IMA

network-clock-participate wic slot#

network-clock select 1 e1 slot#/substlot#

Hope to help


Ahmad-Maan Thu, 11/19/2015 - 05:02

VWIC2-2MFT-G703" card want to installing in C1900 series router, is it supported.


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