I am trying to setup UCBE and MGCP with a 2811 Router and PRI. The issue is that only 12 channels of the PRI are going to be active and MGCP keeps overwriting to using the full 24 channels again in the router. Where do I change the config so it only uses the first 12 channels?
You need to manually configure your mgcp gateway. Remove the following commands..
ccm-manager config server ...
What is happening is that callmanager is automatically configuring the mgcp gateway because of this commands and callmanager will always configure the 24 channels unless you edit the service parameters and busy out some channels
Further the good information provided by Deji +5, here is a little more detail.
Firstly Cisco stipulate that they do not support fractional PRI with MGCP, the alternative is to H.323.
However, it is possible to reconfigure the controller in order to restrict the number of timeslots, and ensure that CallManager does not reconfigure the controller back to 24.
If conserving DSPs is not a requirement for configuring transcoding, then you can simply leave the timeslots as configured, and then busy the timeslots that are not available within the CallManager service parameters under MGCP Settings:-
Take a look at this document for busy-out b-channels:-
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...