Random numbers seem like there is no ringing, then we hear the voicemail message. If you call with a cell phone you get the rings and all signalling.
There are now 2 external numbers that are exhibiting the same exact behavior. I am afraid that we are going to get more an more.
tail -f /var/log/asterix/full looks like any other call.
All other internal and external calls are great.
I also mirrored the interface on the PBX and there is no audio there either.