Controlling Multiple PRI T-1's with 1 d Channel

Unanswered Question

We are connecting a Redcom IGX to three Cisco 3745 routers (12.4(7g) ios) with 13 T-1's using MGCP and a Call manager running 4.1. We just converted to PRI using 4ESS between the two. The redcom has a way to control (span) up to 5 T-1's using one D Channel, is it possible to control (span) multiple T-1's using one D Channel on the call manager?

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
teodorgeorgiev Fri, 09/14/2007 - 00:44


as far as I know, this is not possible.

Protocols like NFAS, R2 and QSIG can not be used on MGCP controlled gateways.

rob.huffman Fri, 09/14/2007 - 05:52

Hi Justin,

Teodor is correct here (nice one T!) NFAS is only currently supported with h.323 not MGCP.

Here is a Cisco note indicating this as well as a couple of config docs;

From Esteban @ Cisco;

From Milan;

From Chris;

Hope this helps!



This Discussion