CME not forwarding external calls to CUE voicemail

[PaulBunyanTech]

I have an issue with our voicemails on Unity Express that are not working form external calls. When I call into our system using an external number my phone will ring correctly but when it should go to voicemail all I hear is just dead air. But when I call to my extension from another extension the voicemail works fine. Our CME is version 12.0 and CUE is Verison 8.6.7. any advice is greatly appreciated.

[Dennis Mink]

sounds like a routing issue where RTP is not able to set up voice between the two IP addresses.

can you provide the debug ccsip messages out put of you are using Sip. or else tell us how the RTP stream is set up (source and destination)