[asterisk-users] TDM400 stopped bridging outgoing FXO call

[Yuan LIU]

My TDM400/zaptel 1.2.10/Asterisk 1.2.13 suddenly stopped bridging outgoing 
FXO calls.  If I make a call (from an FXS channel) to a PSTN destination, 
and the other side answers, Asterisk will show continued ringback on the FXS 
channel, while the PSTN side hears silence.  No error message appears.

If a call from PSTN terminates on the same FXO, Asterisk can still ring the 
FXS channel, and when FXS is picked up, normal conversation can complete.  
So the bridge is broken only when making outgoing calls.

I am not sure what I have changed during the past few days.  Any 
suggestions?

Yuan Liu