Hi I installed 3 Patton Sn4114 4 fxo ports for analog trunks. i upgraded them to the latest firmware and applied the config file generated by the 3CX system. i am able to call out and receive call correctly. I have an issue while talking to an external party and both users talk at the same time the audio of the other end will cut off for a second. If i make a little sound, the audio will cut off and comes back after a seconds. I know this isnt normal with the 3CX itself because if i call the voicemail i can talk and the audio will not be affected. I also connected a sip trunk on that system and did the same test without the issue happening. anyone have seen this?> I am now sure the issue if with the Patton. i am using yealink T46G and T48G with latest firmware supported by 3CX.