Problem with Asterisk Audio when ztdummy is loaded

Hell All,

  Really strange problem that I am facing on one of asterisk install.

These are the version I am using
Asterisk: 1.4.20
Zaptel: 1.4.9

When I start asterisk without ztdummy loaded everything looks fine. Audio works fine for this dialplan.

exten => 66666,1,Answer()
exten => 66666,2,Playback(tt-monkeys)
exten => 66666,3,Hangup()

But when I load ztdummy the Audio stops working, why is this strange behavior by asterisk?


some manuals say that you better have HZ=1000 in your kernel config…

I dont know if its a good idea, but I would try to start asterisk like
asterisk -fdvvvvvvvvvvvvvv | less to check you dont have any strange errors…