sip proxy server -----> audioCodes Mediant Server 1000 ---> Cisco 2811 MGCP ----> Cisco UCM
My call comes from a sip proxy server into AudioCodes server via SIP trunk which is then connected with E1 QSIG link to MGCP gateway.
I can ring from Cisco SIP/SCCP phones through the proxy server sucessfully but when i try and ring the Cisco phones via the proxy server
, i get the SIP recovery timer error .
I see that the SETUP msg is received in the MGCP from audioCodes server, the mgcp then sends Call_proc and Alerting messages to Cisco UCM, i am wondering what else Cisco UCM is expecting which causes a timer to expire.
The Cisco phone will ring once and then it is disconnected.
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