I have a 3.1(5) unity with a 3.2(2c) call manager.
Users can not dial into voice mail. When the msg button is hit, the display says connecting to voice mail port, nothing is heard, and then the call is dropped. If I reset unity, it starts working again, and then fails in about an hour. this started happening the other day.
In the event viewer I see an avmiu_mc error 530:
Component Miu: Thread 0x00000E94 had a Failure on Port 6 in AvWav
This sounds like an issue with codecs from the one event and the problem described. Are the phones in the same region as your voicemail ports? If so, is the region g711 or g729?
If you desire a g729-g729 connection between the phones and Unity, make sure Unity's record format is set for g729 and the codec is installed on the Unity server (this will be obvious from Application events during startup for each of the TSP ports stating 'g729 enabled').
Anyone using g729 will want the latest codec from the CCO download site (CCO registration req'd):
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