Is this being looked at by NCH?
a customer calls in axon gets the call transfers the call to IVM, IVM OGM picks up and plays greating - customer enters extension number and then its dead air until either the call is picked up or goes to voicemail.
in IVM you see ----
command - transfer
voip blind transfer to: (extension number dialed)
play system prompt: Ringing
transfer sip call to: (extension dialed)
call has disconnected.
So i would assume it would be something with transfering the call back throu axon to the extension and the (play system prompt: Ringing) gets lost.