interface: eth0 (10.10.2.0/255.255.255.0) filter: (ip) and ( port 5060 ) U 10.10.2.110:5060 -> 10.10.2.146:5060 INVITE sip:21262758@10.10.2.146 SIP/2.0. Via: SIP/2.0/UDP 10.10.2.110:5060;branch=z9hG4bKcde68da3955fb820;rport. Max-Forwards: 70. From: 2222 ;tag=7c8f42f7419981c0. To: . Call-ID: 155cde7a93856bc5@10.10.2.110. CSeq: 1 INVITE. Contact: 2222 . Allow: INVITE, ACK, CANCEL, BYE, REFER, NOTIFY, OPTIONS, INFO. User-Agent: D-Link/DVG-1402S-1.00.012GNR. Supported: timer. Session-Expires: 30;refresher=uac. Content-Type: application/sdp. Content-Length: 224. . v=0. o=- 211649939 211649939 IN IP4 10.10.2.110. s=-. c=IN IP4 10.10.2.110. t=0 0. m=audio 49152 RTP/AVP 18 8 101. a=rtpmap:18 G729/8000. a=rtpmap:8 PCMA/8000. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. U 10.10.2.146:5060 -> 10.10.2.110:5060 SIP/2.0 422 Session Interval Too Small. Via: SIP/2.0/UDP 10.10.2.110:5060;branch=z9hG4bKcde68da3955fb820;received=10.10.2.110;rport=5060. From: 2222 ;tag=7c8f42f7419981c0. To: ;tag=as5cf6c552. Call-ID: 155cde7a93856bc5@10.10.2.110. CSeq: 1 INVITE. Server: Asterisk PBX 10.9.0. Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH. Supported: replaces, timer. Date: Thu, 20 Dec 2012 12:26:47 GMT. Min-SE: 90. Content-Length: 0. . U 10.10.2.110:5060 -> 10.10.2.146:5060 ACK sip:21262758@10.10.2.146 SIP/2.0. Via: SIP/2.0/UDP 10.10.2.110:5060;branch=z9hG4bKcde68da3955fb820;rport. Max-Forwards: 70. From: 2222 ;tag=7c8f42f7419981c0. To: ;tag=as5cf6c552. Call-ID: 155cde7a93856bc5@10.10.2.110. CSeq: 1 ACK. User-Agent: D-Link/DVG-1402S-1.00.012GNR. Content-Length: 0. . U 10.10.2.110:5060 -> 10.10.2.146:5060 ACK sip:21262758@10.10.2.146 SIP/2.0. Via: SIP/2.0/UDP 10.10.2.110:5060;branch=z9hG4bKcde68da3955fb820;rport. Max-Forwards: 70. From: 2222 ;tag=7c8f42f7419981c0. To: ;tag=as5cf6c552. Call-ID: 155cde7a93856bc5@10.10.2.110. CSeq: 1 ACK. User-Agent: D-Link/DVG-1402S-1.00.012GNR. Content-Length: 0. . U 10.10.2.110:5060 -> 10.10.2.146:5060 INVITE sip:21262758@10.10.2.146 SIP/2.0. Via: SIP/2.0/UDP 10.10.2.110:5060;branch=z9hG4bK1cb66cf2c638e98c;rport. Max-Forwards: 70. From: 2222 ;tag=7c8f42f7419981c0. To: . Call-ID: 155cde7a93856bc5@10.10.2.110. CSeq: 2 INVITE. Contact: 2222 . Allow: INVITE, ACK, CANCEL, BYE, REFER, NOTIFY, OPTIONS, INFO. User-Agent: D-Link/DVG-1402S-1.00.012GNR. Supported: timer. Session-Expires: 90;refresher=uac. Min-SE: 90. Content-Type: application/sdp. Content-Length: 224. . v=0. o=- 211649939 211649939 IN IP4 10.10.2.110. s=-. c=IN IP4 10.10.2.110. t=0 0. m=audio 49152 RTP/AVP 18 8 101. a=rtpmap:18 G729/8000. a=rtpmap:8 PCMA/8000. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. U 10.10.2.146:5060 -> 10.10.2.110:5060 SIP/2.0 100 Trying. Via: SIP/2.0/UDP 10.10.2.110:5060;branch=z9hG4bK1cb66cf2c638e98c;received=10.10.2.110;rport=5060. From: 2222 ;tag=7c8f42f7419981c0. To: . Call-ID: 155cde7a93856bc5@10.10.2.110. CSeq: 2 INVITE. Server: Asterisk PBX 10.9.0. Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH. Supported: replaces, timer. Contact: . Content-Length: 0. . U 10.10.2.146:5060 -> 10.10.2.110:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 10.10.2.110:5060;branch=z9hG4bK1cb66cf2c638e98c;received=10.10.2.110;rport=5060. From: 2222 ;tag=7c8f42f7419981c0. To: ;tag=as5cf6c552. Call-ID: 155cde7a93856bc5@10.10.2.110. CSeq: 2 INVITE. Server: Asterisk PBX 10.9.0. Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH. Supported: replaces, timer. Contact: . Content-Type: application/sdp. Content-Length: 254. . v=0. o=root 696658747 696658747 IN IP4 10.10.2.146. s=Asterisk PBX 10.9.0. c=IN IP4 10.10.2.146. t=0 0. m=audio 12762 RTP/AVP 18 101. a=rtpmap:18 G729/8000. a=fmtp:18 annexb=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-16. a=ptime:30. a=sendrecv. U 10.10.2.110:5060 -> 10.10.2.146:5060 ACK sip:21262758@10.10.2.146:5060 SIP/2.0. Via: SIP/2.0/UDP 10.10.2.110:5060;branch=z9hG4bK645f889183da58d6;rport. Max-Forwards: 70. From: 2222 ;tag=7c8f42f7419981c0. To: ;tag=as5cf6c552. Call-ID: 155cde7a93856bc5@10.10.2.110. CSeq: 2 ACK. User-Agent: D-Link/DVG-1402S-1.00.012GNR. Content-Length: 0. . U 10.10.2.110:5060 -> 10.10.2.146:5060 BYE sip:21262758@10.10.2.146:5060 SIP/2.0. Via: SIP/2.0/UDP 10.10.2.110:5060;branch=z9hG4bKcbfd1be29e447ee9;rport. Max-Forwards: 70. From: 2222 ;tag=7c8f42f7419981c0. To: ;tag=as5cf6c552. Call-ID: 155cde7a93856bc5@10.10.2.110. CSeq: 3 BYE. Allow: INVITE, ACK, CANCEL, BYE, REFER, NOTIFY, OPTIONS, INFO. User-Agent: D-Link/DVG-1402S-1.00.012GNR. Content-Length: 0. . U 10.10.2.146:5060 -> 10.10.2.110:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 10.10.2.110:5060;branch=z9hG4bKcbfd1be29e447ee9;received=10.10.2.110;rport=5060. From: 2222 ;tag=7c8f42f7419981c0. To: ;tag=as5cf6c552. Call-ID: 155cde7a93856bc5@10.10.2.110. CSeq: 3 BYE. Server: Asterisk PBX 10.9.0. Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH. Supported: replaces, timer. Content-Length: 0. .