[Asterisk-Users] Sometimes calls are silent

[Jonathan Bartlett]

I'm setting up an asterisk server, used as a gateway to regular phone 
lines.  I've got a TDM400P card with FXO modules, but I'm only using one 
to test.

When I make outgoing calls, occassionally it seems like the incoming 
audio is switched off.  It will work fine for several calls, and then 
for several more calls the incoming audio will be silent.  The other 
party can still hear me, I just can't hear them.

I'm using fxs with ks.  I've tried it w/ echo cancelling both on and 
off.  Anyone else have this problem?  It never happens in the middle of 
a call, either.  The call either has sound or it doesn't have sound.

I'm using Firefly for my SIP phone, but I don't think it's an issue with 
the soft phone.

Thanks!

Jon