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New Member

Configuring NM-1CE1T1 pri module on cisco 2621xm router


We are having a NM-1CE1T1-PRI module on our cisco 2621 XM router. We want to configure it for video conferrencing.

Can anybody please guide, what configuration has to be done for this??

We are currently having two serial interfaces configured and running on it.

Suggestions would be appreciated,



Re: Configuring NM-1CE1T1 pri module on cisco 2621xm router


Are you going to have simple P2P connection between 2 of your locations or going to multiple spoke and single hub connectivity ??

Again are you going to connect a T1 or E1 ?

I feel you may be going for a E1 here if thts the case do refer the required config lines.

1. enable

2. configure terminal

3. card type e1 slot

4. controller e1 slot/port

5. linecode {ami | hdb3}

6. framing {crc4 | no-crc4}

7. clock source {line | internal}

8. channel-group channel-number {timeslots range [speed {56 | 64}] | unframed}

9. line termination {75-ohm | 120-ohm}

10. exit

Once you are done with the controller configs you can start configuriing the respective serial interface which will get you connected to the remote location.

T1 config :

3. card type t1 slot

4. controller t1 slot/port

5. linecode {ami | b8zs}

6. framing {sf | esf}

7. clock source {line | internal}

8. pri-group [timeslots range]

also for more assitance you can refer this link ...


New Member

Re: Configuring NM-1CE1T1 pri module on cisco 2621xm router


I am going to use a system inside with private ip address and that will b NATTed to a public IP so if anybody tries to access this public ip, he will come in to this private ip and wud be able to do video conferencing..

This is E1 PRI line. I want to use the whole 2 MB link for this purpose only i.e. video conferencing..

Somebody told me to use pri-group it with E1 pri??

Re: Configuring NM-1CE1T1 pri module on cisco 2621xm router


If you want to make use of the whole 2Mbps then you can simply configure using

controller E1 1/0

channel-group 1 unframed

then you can start configuring the serial interface parameters such as encapsulation,ip address etc., which gets created after keying in this in the config.


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