How to configure CME 8.6 SIP Trunk to CUC 11.5

[deblyn914]

Looking for help, Client lost voicemail on cme 8.6.  I want to build CUC 11.5 and connect with SIP trunk, are they compatible?

[Jaime Valencia]

Not according to the documentation

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/compatibility/matrix/b_cucclientmtx.html#id_24429

[deblyn914]

Thank you for responding, I saw that as well.  This Client's voicemail failed and I am looking to integrate unity via a sip trunk, I was hoping that someone had success irregardless of that document.  The client cannot afford a new system at this time but need voicemail.

[Jaime Valencia · Accepted solution]

If you have both systems, you're free to try it, but you obviously cannot call Cisco for support as it's not listed as compatible or supported. 

[deblyn914]

The guest has no smart-net, so no support anyway.  I will give it a try anyway, with my fingers crossed of course.

Thank you so much for responding to me.