I have a few phones on remote site registered in CUCM at main site through WAN. The phone functions are fine. However, I can't access voicemail from remote site phones either by pressing message button or dial voice mail pilot. It's just silence and the timer is counting. But when I use other phone to call that phone, it forwards to the voicemail correctly. I configured a same user for remote user at main site, it worked fine. Both CUCM and Unity Connection are 8.0. Any one can help?
Q: Sounds like this could be a codec issue, so it appears the call is connecting but you hear nothing, correct?
A: Yes, the phone shows connected to voicemail XXXX(pilot), but I hear nothing.
Q: When you are connected what codec do you see (double click ? on 79XX phone)?
A: From main site, it shows g.711ulaw, from remote site, nothing.
Q: What voicemail system do you have? What codecs is are enabled on it (advertised)?
A: The voice mail system I have is Unity Connection 8.0. I enabled g.711 (both ulaw and alaw) and g.729
Q: What is the codec defined between the phone's region and the region assigned to either SIP trunk if using SIP integration or voicemail ports if using SCCP?
A: I integrated using SCCP, the codec defined are g.722 and g.711. G.722 advertisement has been disabled.
Also, when I use IP communicator on my laptop which is totally fine in main site, it's just not working when I use VPN connect from home (The phone function is fine, just voicemail not working properly).
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