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New Member

CM5.1 : Direct SIP Trunk to Services Provider [call Disconnects]

I have configured the SIP trunk [unauthenticated] to my services provider for outbound calling.

I can make a call using the SIP trunk configured in callmanager, but call is getting disconnect after every 15 min. Our service provider says every 15 min there there SIP server sends UPDATE messege to call manger which call manager is not responding and that's why call is getting disconnects.

When i checkd 'debug sh ip nat sip' output CM is sending 401 unauthorised message in response to UPDATE message. I am here with attaching the debug output for your referece.

I will be really glad full if someone can provide me the workaround for the same.


Re: CM5.1 : Direct SIP Trunk to Services Provider [call Disconne

You may be hitting with a bug: check the information in this bug : CSCsd38035

New Member

Re: CM5.1 : Direct SIP Trunk to Services Provider [call Disconne


Thank you very much for the reply. Yes you are right , i am hitting the same bug.

I have upgraded the UCM version and now it is working.