PSTN with E1 CAS

[Rafael Jimenez]

I have a CUCMBE and a Cisco 2821. I see in some post the CCM (v3.1) doesnt support MGCP with E1 CAS. I would like to know if this still valid with CUCMBE (v 6.x).

Thanks.

[Rob Huffman · Accepted solution]

Hi Rafael,

This restriction is still applicable in all CCM Versions including CUCM-BE :)

Restrictions for MGCP PRI Backhaul and T1 CAS Support

•Voice interfaces on the NM-HDA and the AIM-VOICE-30 are not supported.

•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.

•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.

http://www.cisco.com/en/US/docs/ios/voice/cminterop/configuration/guide/vc_mgcp_t1cas.html#wp1003831

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;

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00801ec5cb.html#33733

MGCP and H.323 Voice Gateway Protocol Comparison

http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00806fedbe.shtml

Hope this helps!

Rob