CUCM integration with PBX using sip trunk

Unanswered Question
Oct 24th, 2008

Dear Networkers,

We Implimented one Cisco CallManger Version 6.1in Central location and one PBX (SwichVox)in remote location.The link between CUCM and PBX through VPN.The VPN connected through ADSL modem.We can able to ping from CUCM to PBX.I Created one sip trunk and give destination Ip as PBX IP.I Created one route pattern and assign sip trunk as GW. When I make a call from CUCM to PBX I got fast busy signal.

Please look this issue with priority.

Thanks in advance...

I have this problem too.
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kvsaheednetpro Fri, 10/24/2008 - 05:05


Did you check the MTP required radio button in tne trunk configaration window. It is necessary to convert the sccp DTMF signal to SIP form.

Check the MTP configaration in the CM also

febinattingal Fri, 10/24/2008 - 06:37

Thanks for your reply...

I checked the MTP required radio button in the trunk configaration window and MTP also assigned to trunk using mrgl.My connectivity with CUCM and PBX via VPN...Is it ok


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