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CUCM 9 SIP trunk to PRI hold issue

Hello all.

     I had a strange issue when integrate a PRI gateway (2921) back to CUCM 9 use SIP trunk. A CUCM user can't put an PSTN incoming call to hold. The PSTN holdee gets dropped after 10 seconds. Compare the mid-call invite sent from the CUCM and received at he debug ccsip message of the Gateway, I can see the the CUCM mid-call invite the "contact" field ip address gets changed when arrived at the gateway. Which later cause the ACK can't sent back to the Gateway. I have change SIP profile in CUCM many times and SIP configure at gateway many times and am not sure what went wrong. Please help. Attached are the SIP messages from the CUCM and the Gateway. The only senario for this to work is check the MTP required.

  Thanks

 

2 REPLIES

Could you share the running

Could you share the running config of your gateway which terminates the SIp trunk? 

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Community Member

George,       Thanks for the

George,

       Thanks for the reply. Attached is the running configure of the gateway. thanks
 

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