SIP TRUNK BETWEEN CUCM AND CUC

[Alex2025]

Hello Team,

I have configured a sip trunk link from my cucm cluster (pub and sub) to the cuc; the trunk link is up. The route pattern is also configured correctly because when I digit analyse the call it is routed to the trunk link. However, when I try to call the voicemail number, the call doesn't go through. Looking at the logs, I see that the call doesn't even go to the trunk link and I get the error message 1459617833 CCM_SIP_503_SERVICE_UNAVAILABLE. I'm on version 15 of CUCM and CUC

[Alex2025]

Hi team, I've solved the problem. I had to add the two cucm servers ( pub and sip) to the cuc and add the cuc as a tftp server. Thanks