MRP configuration

[dmainzer]

I have an MRP200 with a VWIC-1MFT-T1 voice card installed. This is for a new installation. The service being proviced by our LEC is called "Access Advantage". It consists of a T1 trunk with multiple DS0's that support FXO-Loop-Start signalling on channels 1-12 and 18,19. There is also a DID group on channels 20-24 that support E&M-wink-start. I have configured 3 DS0 groups on the interface through the CLI, but do not have an "FXO-Loop-Start" option when I configure the voice card as an MGCP T1-CAS gateway. Do I need to configure this as H.323? or can this be done in MGCP?

[amishak]

you need 12.2(4) YH , 12.2(8) YJ, 12.2(8) YL for MGCP support.

-Amisha

Cisco Systems

[dmainzer]

The MRP shows registration with the Call Manager, so I must have the right IOS version. By the way, where do I find IOS versions for MRP blades? Please read the rest of the question. It seems that Call Manager will not allow an "FXO-loop-start" signal type on a T1 CAS connection for an MGCP gateway, but the CLI on the MRP will. Call Manager will only allow for E&M signalling on T! CAS. Is that a version limitation? Is my only choice to configure the MRP as an H.323 gateway? We are running CCM version 3.1.3a, and will be moving to 3.2

Thanks

[amishak]

I did read the entire question and I am suggesting to upgrade.

XL4 image supports MGCP for analog endpoints only. Considering the effort

needed and the fact that digital was to be supported soon, we didn't disable

the CLI for digital. Putting a port (eg 1/0:23) under a POTS dial peer with

mgcpapp will not automatically enable it for MGCP.

you will need the YH image or ..H.323 will also work.

-Amisha

Cisco Systems

[scadora]

The MRP will register with the CCM with earlier IOS versions, but only analog

MGCP ports will work before YH. You might be able to configure digital ports for MGCP, but they won't work properly. Info on YH is available at:

http://www.cisco.com/warp/public/cc/pd/ga/voicega/7750/prodlit/1787_pp.htm

But even if you upgrade your IOS to YH, you won't be able to do FXO-loop-start

on your T1 with MGCP. The CM and the MRP can only do E&M T1 CAS with MGCP. CCM 3.2 will not be any different.

If you have to do FXO-loop start, H323 is the way to go.