[asterisk-users] outgoing calls not working on sangoma A200

[kazabe]

Hi.

I have 3 lines connected to a SangomaA200.   All was working normally,
but 3 days ago we experiment this issue.    The outside callers can
call us normally; but when we try to do an external call, just receive
the message "all circuits are busy".

Only happen with outgoing call.  Incomming calls work fine.

if the conf was not modified, what can i check to search the reason of
that issue?

thanks and regards