I’m pretty new to Asterisk and have pretty much setup the box and it has been running well except that on occasion I have been getting ‘empty’ voicemails from my Vonage account.
The setup that I have is
Vonage box --> TDM400 -->asterisk box
The system works great for calls coming in and out etc but i get these voicemails that always run for 34 or 35 seconds and have a dialtone for 6 seconds followed by a busy tone.
I don’t know a lot about all of the configs but I had assumed that because the Vonage box is setup to work in the US and the default settings for Asterisk ‘should’ match it, I have not changed any of the line level settings etc.
I have been able to reproduce the problem by letting the call go to voicemail and then hanging up just before the voicemail greeting has finished.
I guess my question is: Is there any way to stop voicemails being sent if all they contain is a dailtone followed by a busy tone?!
I have put one of the VM’s that ive been getting on the net if it helps