PRI Trunk group configuration

[sudhir kumar1]

Hi All,

We are configuring Trunk groups for 4 E1's on a single router so kindly let me know that do i need to add trunk group under serial ports or only under controller configuration.

Can anybody share the sample config.

Regards..

Sudhir kumar

[Sreekanth Narayanan]

You need to add them under Serial interface configuration.
You can verify the trunk group configuration by using the "show trunk group <name>" command. It will give you information of all the interfaces under the trunk group and their availability.

[Chris Deren]

here is example:

trunk group Local-PRI
description Local AT&T PRI circuits

interface Serial1/0:23
trunk-group Local-PRI 1

interface Serial1/1:23
trunk-group Local-PRI 2

dial-peer voice 1 pots
trunkgroup Local-PRI
description Local Trunks, Local calls
destination-pattern 81[2-9]..[2-9]......
progress_ind setup enable 3
progress_ind progress enable 8
forward-digits 11

[sudhir kumar1]

Thanks for the reply

But i can also see the option of adding trunk group under controller configuration.

Can you pls explain is it required to add trunk group under controller.

regards..

sudhir kumar

[Sreekanth Narayanan]

The option of configuring trunk-group command under the controller is for Channel Associated Signaling (CAS) controllers like T1 CAS, E1 R2 CAS. When using PRI, the trunk-group command has to be configured under Serial Interface.
You can take a look at this IOS command reference that explains the various places trunk-group can be configured.
https://www.cisco.com/en/US/docs/ios/12_3/vvf_r/vrg_t1_ps1839_TSD_Products_Command_Reference_Chapter.html#wp1500903

[Roger Kallberg]

Trunks groups can be configured under controllers for PRIs also. It's not just for CAS configurations. The referenced Cisco IOS Voice Command Reference is quite old as it's for 12.3 I believe.

Where you choose to configure is a matter of preference. Personally I prefer to do it on the controllers.

[Roger Jin]

edit