PSTN with E1 CAS

Answered Question
Jul 19th, 2008
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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.

Correct Answer by Rob Huffman about 8 years 11 months ago

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



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Correct Answer
Rob Huffman Sat, 07/19/2008 - 08:11
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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



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