recently we have added new phones to our existing voice network. We added cisco 7945G sip phones but we have some issue on outbound call. The voice will automatically drop after 20 sec
seems like we are not getting acknowledgement from the phone
1501598: *Sep 16 10:18:14.155: %VOICE_IEC-3-GW: SIP: Internal Error (ACK wait timeout): IEC=1.1.129.7.66.0 on callID 370874 GUID=96E85E89B8D011E8A8B2B2D1FE6878A8
1501599: *Sep 16 10:18:14.155: //370874/96E85E89A8B2/CCAPI/cc_api_call_disconnected:
Cause Value=102, Interface=0x7F138C6C5C38, Call Id=370874
1501600: *Sep 16 10:18:14.155: //370874/96E85E89A8B2/CCAPI/cc_api_call_disconnected:
Call Entry(Responsed=TRUE, Cause Value=102, Retry Count=0)
Can you please assist what is causing the issue.
Network Diagram
PSTN <--> CME(H.O. Router) <--> EXTERNAL NETWORK(MPLS) <--> GATEWAY ROUTER (REMOTE) <--> PHONES(SIP 7945G)
No voice configuration on remote gateway router only routing and IP address
Really appreciate your help
