Hello, everyone... I've got a tough question here: :shock: Scenario: I have two LANs (192.168.1.0/24 and 192.168.2.0/24), each with one SIP ATA (192.168.x.5), in addition I have installed a 3CX server on 192.168.1.1 Configured everything without STUN, extensions (101 for 192.168.1.5 and 201 for 192.168.2.5) call each other without any problem. Now... My issue: I have recently acquired a DID number and set it to ring on ext. 101, everything works fine, audio is still crystal clear... However, when I set it to ring on ext. 201, audio is garbled: the reason, as I discovered it when logging verbose: the 3CX server sits as a 'proxy' and forwards RTP packets from 201 to the external DID and vice-versa... So RTP packets going to 201 are going through the SIP server and are being relayed to the extension despite the fact that I disabled PBX audio relay in 3CX. The link between the two subnets cannot handle extra bandwidth need. Does anyone have any solution for this? And thanks! w.