I’m having a weird problem (running Asterisk 1.0) when we have 2 concurrent calls active. The first call works perfectly, as designed - however with the 2nd call, they can hear us - but we are unable to hear them.
Let me explain a little more about our system.
We are running an “Auto-Attendant” style system, so when the call comes it, it prompts to press 1, 2 or 3 for each department.
Our handsets are setup with multiple lines, i.e. my primary extension is 701 and the person sitting next to me is 702. I also have, Ext 7101, 7201 & 7301 running off the same phone and same with each other employee here except with the next consecutive number.
When a call comes in for group 1, all handsets in group 1 will ring eg. 7101, 7102, 7103 etc. A person answers the call and will have full communication abilities to the person and everything is fine. When a 2nd call comes in, again all the hansets for group 1 will ring. The next person who now picks up this call will answer it, and seem like they are working correctly. The person on the other end of the line can hear us perfectly, but we are unable to hear them. This occurs with the 2nd call that comes in on ANY group… i.e if there is 1 call active in group 1 and the 2nd call that comes in is directed to group 2 - the problem will still occur.
To add something further into the mix, we have all calls records to a .wav file for security reasons (this has been disabled during diagnostics of the problem) - and both ends of the conversation are being recorded and are being received into the system
We feel that the problem is possibly occuring during the bridging in the G729 codec with the secondary call, however are unable to know if it is or not.
Can anyone provide a possibly solution/workaround or tests that we can perform to move further with this issue?