- Silver, 250 points or more
Running CCM 4.1.3. I found out that the site that we are turning up has E1 CAS, and not E1 PRI like I had thought. We are using MGCP. I can configure the router (2851 with VWIC2-MFT-2E1) to use CAS, but I cannot see to get CCM to. Whenever I open the configuration on the port, it goes straight to the Digital PRI config screen without asking if it is PRI or CAS. I have tried deleteing the port, changing the card. The only thing I haven't tried is deleting the gateway itself, and I'd rather not, because it was a bunch of analog ports already configured and removing and readding those will be a pain. Any thoughts?
I believe this MGCP with E1 CAS restriction is still applicable in all CCM Versions**;
Restrictions for MGCP PRI Backhaul and T1 CAS Support
â¢Voice interfaces on the NM-HDA and the AIM-VOICE-30 are not supported.
â¢Integrated access, in which the channels on a T1 or E1 interface are divided between a group used for voice and another group used for WAN access, is not supported when voice is controlled by Cisco Unified Communications Manager through MGCP.
â¢T1 and E1 protocols, such as QSIG, E1 R2, T1 FGD, and PRI NFAS, are not supported with MGCP only with H.323.
**E1 CAS is not supported.
Cisco CallManager can use H.323 gateways that support E1 CAS, but you must configure the E1 CAS interface on the gateway.
From this doc;
MGCP and H.323 Voice Gateway Protocol Comparison
Hope this helps!