We replaced several Asterisk 1.8 based systems with Freepbx systems running Asterisk 13 recently. Almost from the very start we had problems with the users experiencing what they call “dropped calls” We have gone and done many things, reworked the Sonicwall routers, changed timers. But still we get complaints. Packet captures show calls being rejected for one reason or another. It dawned on me that maybe the way Asterisk is handling the “Rejected” calls and what it does with them is the issue between the two different versions. Can someone tell me if there was a difference between versions? My theory is that in version 1.8 the system got a rejected message and presented to the user a “Fast Busy” where now the call is dropped. Personally I would prefer only two responses from the phone system, busy for a rejected call or ringing on a call progressing. Where woud I change this in the dialplan?
Thanks for any ideas