Unity Connection 9.x & UCCX 7.x do not answer SIP Calls
We have SIP Trunks between our CUCM v7.1.3 and IPC Unigy system. All test calls to and from CUCM 7.1.3 and IPC Unigy working fine but have found when dialling from IPC Unigy to either Unity Connection 9.x or UCCX 7.x, the call rings without being answered. Believe it is something to do with the out-of-band signalling either not being present, or being present when it shouldn't.
Having difficulty tracing calls in log files.
Dialling from Unigy to either Unity Connection or UCCX via public telephone network call is answered ok.
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Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...