Hi ml, I'm experiencing some problem detecting hangup with sip channel. I have an asterisk on remote site behind NAT and two xlite at home behind nat. I can make calls between them but hangup cannot be detected. When I try to hangup a call I see xlite that tell me "hanging up" for some seconds and hangups the call but the other side still be connected.. I also see on asterisk cli this message: chan_sip.c:787 retrans_pkt: Maximum retries exceeded on call 1AD8E1FA-D373-4A15-804C-11A7A0BDBD99@192.168.1.76 for seqno 45854 (Non-critical Response) Does someone experience the same problem? Can someone help me? Thanks. Marco Ziglioli