Sip read: INVITE sip:1001@[[asterisk-server-ip]]SIP/2.0 Via: SIP/2.0/UDP [[my public ip]]:33677;branch=z9hG4bK1d9e4e58a97824e8 From: "zs1" ;tag=0a4e765231a2b75b To: Contact: Supported: replaces, timer Call-ID: f6077d7ae238917a@[[my public ip]] CSeq: 37285 INVITE User-Agent: Grandstream GXP2000 1.1.0.16 Max-Forwards: 70 Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK Content-Type: application/sdp Content-Length: 262 v=0 o=zs1 8000 8000 IN IP4 [[my public ip]] s=SIP Call c=IN IP4 [[my public ip]] t=0 0 m=audio 33088 RTP/AVP 0 8 4 18 3 a=sendrecv a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:4 G723/8000 a=rtpmap:18 G729/8000 a=rtpmap:3 GSM/8000 a=ptime:20 13 headers, 13 lines Using latest request as basis request Sending to [[my public ip]] : 33677 (non-NAT) Reliably Transmitting (NAT): SIP/2.0 407 Proxy Authentication Required Via: SIP/2.0/UDP [[my public ip]]:33677;branch=z9hG4bK1d9e4e58a97824e8;received=[[my public ip]];rport=6050 From: "zs1" ;tag=0a4e765231a2b75b To: ;tag=as44437258 Call-ID: f6077d7ae238917a@[[my public ip]] CSeq: 37285 INVITE User-Agent: Asterisk PBX Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER Contact: Proxy-Authenticate: Digest realm="asterisk", nonce="12bd8c48" Content-Length: 0 to [[my public ip]]:6050 Scheduling destruction of call 'f6077d7ae238917a@[[my public ip]]' in 15000 ms Found user 'zs1' server*CLI> Sip read: INVITE sip:1001@[[asterisk-server-ip]]SIP/2.0 Via: SIP/2.0/UDP [[my public ip]]:33677;branch=z9hG4bK1d9e4e58a97824e8 From: "zs1" ;tag=0a4e765231a2b75b To: Contact: Supported: replaces, timer Call-ID: f6077d7ae238917a@[[my public ip]] CSeq: 37285 INVITE User-Agent: Grandstream GXP2000 1.1.0.16 Max-Forwards: 70 Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK Content-Type: application/sdp Content-Length: 262 v=0 o=zs1 8000 8001 IN IP4 [[my public ip]] s=SIP Call c=IN IP4 [[my public ip]] t=0 0 m=audio 33088 RTP/AVP 0 8 4 18 3 a=sendrecv a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:4 G723/8000 a=rtpmap:18 G729/8000 a=rtpmap:3 GSM/8000 a=ptime:20 13 headers, 13 lines Ignoring this request Transmitting (NAT): SIP/2.0 488 Not Acceptable Here Via: SIP/2.0/UDP [[my public ip]]:33677;branch=z9hG4bK1d9e4e58a97824e8;received=[[my public ip]];rport=6050 From: "zs1" ;tag=0a4e765231a2b75b To: ;tag=as44437258 Call-ID: f6077d7ae238917a@[[my public ip]] CSeq: 37285 INVITE User-Agent: Asterisk PBX Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER Contact: Content-Length: 0 to [[my public ip]]:6050 Retransmitting #1 (NAT): SIP/2.0 407 Proxy Authentication Required Via: SIP/2.0/UDP [[my public ip]]:33677;branch=z9hG4bK1d9e4e58a97824e8;received=[[my public ip]];rport=6050 From: "zs1" ;tag=0a4e765231a2b75b To: ;tag=as44437258 Call-ID: f6077d7ae238917a@[[my public ip]] CSeq: 37285 INVITE User-Agent: Asterisk PBX Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER Contact: Proxy-Authenticate: Digest realm="asterisk", nonce="12bd8c48" Content-Length: 0