FAC or CMC features on digital (PRI) gateway ??

Unanswered Question
May 4th, 2007

The administration guide states clearly that FAC features work with all Cisco IP Phone models and MGCP-controlled analog gateway. I would wonder that FAC features work with digital gateway on PRI connection or not?

I have this problem too.
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rob.huffman Fri, 05/04/2007 - 04:55

Hi Hando,

The Digital PRI can be set to use MGCP so this should work just fine. Have a look;

How to Configure MGCP with Digital PRI and Cisco CallManager

From this doc;

http://www.cisco.com/en/US/tech/tk1077/technologies_configuration_example09186a00801ad22f.shtml

Here is another very helpful doc;

Forced Authorization Codes (FAC) Configuration Example

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_configuration_example09186a00807d11d4.shtml#req

Hope this helps!

Rob

Brandon Buffin Fri, 05/04/2007 - 04:57

Yes, you can use FAC/CMC with PRI. The distinction that is being made is between H.323 and MGCP. H.323 analog gateways do not support FAC/CMC because they cannot play tones. See the following link for confirmation.

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00802e225e.html

Hope this helps. If so, please rate the post.

Brandon

hando Fri, 05/04/2007 - 05:55

Basically, I understand that FAC/CMC is defining in Route Pattern. And it should be working if matching the pattern. However, the section "Interactions and Restrictions" of Client Matter Codes and Forced Authorization Codes and even in the IP Telephony Part 1 course materials. It states "The CMC and FAC features work with all Cisco IP Phone models and MGCP-controlled analog gateways." In addition, in "Interactions and Restrictions" section, it also states:

- H.323 analog gateways do not support FAC or CMC because these gateways cannot play tones;

- CTI devices and CTI-controlled Cisco IP Phones do not support FAC or CMC; and

- Cisco WebDialer does not support FAC or CMC.

As it specifies on IP Phone models MGCP-controlled analog gateways, H.323 analog gateway, CTI devices, CTI-controlled Cisco IP Phones and CIsco WebDialer, it does not mention digital gateway, so I would wonder that FAC/CMC is working with MGCP-controlled digital gateways?

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