I have configured mgcp fall back and it seems to work fine, with the exception that I cannot access voice mail.
Under call-manager-fallback. I have voicemail <my vm number>. When I push the message button, I get a reorder tone.
If I change the voicemail number to a known extension, and I press the message button, the extension rings.
How do I get voice mail to work on mgcp fall back? Thanks in advance