Hello community !
I have a pri/sip gateway audiocode mediant 1000 (4 E1) connected to an asterisk 13.3.2.
When I loopback 2 E1 together, route a call from asterisk to the audiocode, through the loopback, back to the audiocode, then to the asterisk and finally to the echo application, everything works fine.
When I connect the E1 to a EuroISDN E1 from an operator, and place an incoming through the audiocode, then asterisk and an extension, audio is clear, two ways, no problem.
However… if I route the same call to the same echo application as before, echo is garbled - ie what is said on the pstn phone is echoed back by asterisk garbled. But the weird comes here… if I record with MixMonitor, audio is clear, both ways !!! and the played-back message just before the echo() is also fine.
Codecs are G711a in all cases, and nothing is changed apart from the E1 not being in loopback.
I can not understand why the echo function is not working in this last config !
Any ideas ?