BE 6000 and CIsco 2911 Router

[shanid1987]

I have BE6000 and CUCM is installed on it. I have 7 PSTN lines connected to a Cisco 2911 router. The cisco 2911 router passes all the incoming calls to BE 6000 and then BE 6000 to the ip phone. I have problem while dialing an autoattenndant enabled PSTN number my inputs are not working. When i am pessing any option accordiing to autoattendant there is no response for that. Please help me on this....

[Carlo Poggiarelli]

Hi.

Which signaling protocol are you running between CUCM and 2911?

Thanks

Regards

Carlo

[shanid1987]

i am using SIP protocol between BE 6000 and Cisco 2911.The codec is G711ulaw

[Carlo Poggiarelli]

Hi.

On your SIP trunk enable MTP and verify that MTP resources are assigned through Media Resource group list to that trunk.

On VG, add dtmf-relay rtp-nte to incoming voip dialpeer from CUCM.

If you can, please post VG config and the output of a debug ccsip messages while calling outside.

Thanks

Regards

Carlo

[shanid1987]

Please see the attached file. And please let me know the changes i have to do...

[Carlo Poggiarelli]

Hi.

On CUCM did you enabled MTP on SIP trunk?

on VG activate debug ccsip messages and make a call...

Please attach here the output.

Thanks

Regards

Carlo

[Mohammed al Baqari]

On  the 2911, dialpeers pointing to CUCM should be configured with the right DTMF signaling.

There are many ways of doing it. One of them is using RTP-NTE with MTP as Carlo pointed.

I suggest to use OOB protocol such as SIP-NOTIFY to avoid multiple hops in the call path.

I always try to avoid MTP allocation because if MTP allocation failed, CUCM by default will pass the call. This means that you have broken solution where the call is working but not DTMF signaling.

KPML is good but I have seen some bugs where DTMF relay stops working.