Re: [Serusers] [OT?]BYE issues

Franz Edler wrote: After much investigation and talking with the other developer here this is what we have discovered:- I have run into a problem with the BYE SIP message being forwarded to the MS RTC client that sent it. If the end point that originated the INVITE (RTC Client A) subsequently sends the BYE, all is well like this ... RTC Client A SIP Server RTC Client B -----INVITE--------------> -----INVITE----------------> <----100 Trying----------- <----100 Trying------------- <----180 Ringing---------- <----180 Ringing------------ <----200 OK--------------- <----200 OK----------------- -----ACK-----------------> -----ACK-------------------> ... ---BYE-------------------> ----BYE--------------------> <----200 OK--------------- <----200 OK----------------- However, if the end point that received the INVITE (RTC Client B) subsequently sends the BYE, then the BYE is INCORRECTLY FORWARDED to RTC client B which (correctly) responds with a 481 like this... RTC Client A SIP Server RTC Client B -----INVITE--------------> -----INVITE----------------> <----100 Trying----------- <----100 Trying------------- <----180 Ringing---------- <----180 Ringing------------ <----200 OK--------------- <----200 OK----------------- -----ACK-----------------> -----ACK-------------------> ... <----BYE-------------------- -----BYE-------------------> <----481 Call Leg/T DNE---- At first I thought maybe the SIP server was sending the BYE to the wrong place in error. So I checked on some public servers like sipphone.com and the behaviour was the same. Also, to check that this was not my RTC client application code messing up, I reproduced the same problem with RTCSample which is shipped with RTC 1.2. Has anyone else seend this behaviour? Is this a known problem? ANy suggested workarounds? Thanks in advance ... For anyone interested, here is the ethereal log of the problematic scenario. In this case RTC Client A is 17476684616(a)sipphone.com, RTC Client B is 17476685542(a)sipphone.com and the SIP Server is 198.65.166.131. No. Time Source Destination Protocol Info 26 12.514112 198.65.166.144 192.168.2.16 SIP/SDP [TCP Retransmission] Request: INVITE sip:xxx.xxx.xxx.135:55007;transport=tcp, with session description Frame 26 (1506 bytes on wire, 1506 bytes captured) Arrival Time: Aug 16, 2004 13:14:42.171480000 Time delta from previous packet: 12.514112000 seconds Time since reference or first frame: 12.514112000 seconds Frame Number: 26 Packet Length: 1506 bytes Capture Length: 1506 bytes Ethernet II, Src: 00:09:5b:a8:af:c8, Dst: 00:08:a1:05:a7:17 Destination: 00:08:a1:05:a7:17 (CnetTech_05:a7:17) Source: 00:09:5b:a8:af:c8 (Netgear_a8:af:c8) Type: IP (0x0800) Internet Protocol, Src Addr: 198.65.166.144 (198.65.166.144), Dst Addr: 192.168.2.16 (192.168.2.16) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x10 (DSCP 0x04: Unknown DSCP; ECN: 0x00) 0001 00.. = Differentiated Services Codepoint: Unknown (0x04) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 1492 Identification: 0xf9f6 (63990) Flags: 0x04 (Don't Fragment) 0... = Reserved bit: Not set .1.. = Don't fragment: Set ..0. = More fragments: Not set Fragment offset: 0 Time to live: 46 Protocol: TCP (0x06) Header checksum: 0x1d93 (correct) Source: 198.65.166.144 (198.65.166.144) Destination: 192.168.2.16 (192.168.2.16) Transmission Control Protocol, Src Port: 35683 (35683), Dst Port: 7534 (7534), Seq: 1, Ack: 1, Len: 1440 Source port: 35683 (35683) Destination port: 7534 (7534) Sequence number: 1 (relative sequence number) Next sequence number: 1441 (relative sequence number) Acknowledgement number: 1 (relative ack number) Header length: 32 bytes Flags: 0x0010 (ACK) 0... .... = Congestion Window Reduced (CWR): Not set .0.. .... = ECN-Echo: Not set ..0. .... = Urgent: Not set ...1 .... = Acknowledgment: Set .... 0... = Push: Not set .... .0.. = Reset: Not set .... ..0. = Syn: Not set .... ...0 = Fin: Not set Window size: 5808 Checksum: 0x4692 (correct) Options: (12 bytes) NOP NOP Time stamp: tsval 961303496, tsecr 0 SEQ/ACK analysis TCP Analysis Flags This frame is a (suspected) retransmission Session Initiation Protocol Request-Line: INVITE sip:xxx.xxx.xxx.135:55007;transport=tcp SIP/2.0 Method: INVITE Resent Packet: False Message Header Record-Route: <sip:17476685542@198.65.166.131;transport=tcp;ftag=8fff010e644f4415a81b01004f5525f3;lr> Via: SIP/2.0/TCP 198.65.166.131;branch=z9hG4bKaa22.41ffc1f4.1;i=911 Via: SIP/2.0/TCP xxx.xxx.xxx.135:44538 Max-Forwards: 69 From: "HS User" <sip:17476684616@proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a SIP from address: "HS User" <sip:17476684616@proxy01.sipphone.com> SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a To: <sip:17476685542@sipphone.com> Call-ID: 50ff745bbe664826af92e6820b46acda(a)192.168.2.28 CSeq: 1 INVITE Contact: <sip:17476684616@proxy01.sipphone.com:44538;maddr=xxx.xxx.xxx.135;transport=tcp;nat=yes> User-Agent: RTC/1.2 Content-Type: application/sdp Content-Length: 765 P-hint: usrloc routed P-RTP-Proxy: YES P-Behind-NAT: Yes Message body Session Description Protocol Session Description Protocol Version (v): 0 Owner/Creator, Session Id (o): - 0 0 IN IP4 xxx.xxx.xxx.135 Owner Username: - Session ID: 0 Session Version: 0 Owner Network Type: IN Owner Address Type: IP4 Owner Address: xxx.xxx.xxx.135 Session Name (s): session Connection Information (c): IN IP4 198.65.166.131 Connection Network Type: IN Connection Address Type: IP4 Connection Address: 198.65.166.131 Bandwidth Information (b): CT:1000 Bandwidth Modifier: CT Bandwidth Value: 1000 Time Description, active time (t): 0 0 Session Start Time: 0 Session Stop Time: 0 Media Description, name and address (m): audio 47206 RTP/AVP 97 111 112 6 0 8 4 5 3 101 Media Type: audio Media Port: 47206 Media Proto: RTP/AVP Media Format: 97 Media Format: 111 Media Format: 112 Media Format: 6 Media Format: 0 Media Format: 8 Media Format: 4 Media Format: 5 Media Format: 3 Media Format: 101 Encryption Key (k): base64:UPAp6wJTz2cKuhRz2kaheKDj8gepCwNLQfyrmuH4s+E Key Type: base64 Key Data: UPAp6wJTz2cKuhRz2kaheKDj8gepCwNLQfyrmuH4s+E Media Attribute (a): rtpmap:97 red/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 97 red/8000 Media Attribute (a): rtpmap:111 SIREN/16000 Media Attribute Fieldname: rtpmap Media Attribute Value: 111 SIREN/16000 Media Attribute (a): fmtp:111 bitrate=16000 Media Attribute Fieldname: fmtp Media Attribute Value: 111 bitrate=16000 Media Attribute (a): rtpmap:112 G7221/16000 Media Attribute Fieldname: rtpmap Media Attribute Value: 112 G7221/16000 Media Attribute (a): fmtp:112 bitrate=24000 Media Attribute Fieldname: fmtp Media Attribute Value: 112 bitrate=24000 Media Attribute (a): rtpmap:6 DVI4/16000 Media Attribute Fieldname: rtpmap Media Attribute Value: 6 DVI4/16000 Media Attribute (a): rtpmap:0 PCMU/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 0 PCMU/8000 Media Attribute (a): rtpmap:8 PCMA/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 8 PCMA/8000 Media Attribute (a): rtpmap:4 G723/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 4 G723/8000 Media Attribute (a): rtpmap:5 DVI4/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 5 DVI4/8000 Media Attribute (a): rtpmap:3 GSM/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 3 GSM/8000 Media Attribute (a): rtpmap:101 telephone-event/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 101 telephone-event/8000 Media Attribute (a): fmtp:101 0-16 Media Attribute Fieldname: fmtp Media Attribute Value: 101 0-16 Media Attribute (a): encryption:optional Media Attribute Fieldname: encryption Media Attribute Value: optional Media Description, name and address (m): video 57526 RTP/AVP 34 31 Media Type: video Media Port: 57526 Media Proto: RTP/AVP Media Format: 34 Media Format: 31 Encryption Key (k): base64:dXc/jG6ZtplhGUCGBKCdIfntQR/PxRNDeymbnC9WK9U Key Type: base64 Key Data: dXc/jG6ZtplhGUCGBKCdIfntQR/PxRNDeymbnC9WK9U Media Attribute (a): rtpmap:34 H263/90000 Media Attribute Fieldname: rtpmap Media Attribute Value: 34 H263/90000 Media Attribute (a): rtpmap:31 H261/90000 Media Attribute Fieldname: rtpmap Media Attribute Value: 31 H261/90000 Media Attribute (a): encryption:optional Media Attribute Fieldname: encryption Media Attribute Value: optional Media Description, name and address (m): application 27591 tcp msdat Media Type: application Media Port: 27591 Media Proto: tcp Media Format: msdat No. Time Source Destination Protocol Info 28 12.514795 192.168.2.16 198.65.166.144 SIP Status: 100 Trying Frame 28 (489 bytes on wire, 489 bytes captured) Arrival Time: Aug 16, 2004 13:14:42.172163000 Time delta from previous packet: 0.000683000 seconds Time since reference or first frame: 12.514795000 seconds Frame Number: 28 Packet Length: 489 bytes Capture Length: 489 bytes Ethernet II, Src: 00:08:a1:05:a7:17, Dst: 00:09:5b:a8:af:c8 Destination: 00:09:5b:a8:af:c8 (Netgear_a8:af:c8) Source: 00:08:a1:05:a7:17 (CnetTech_05:a7:17) Type: IP (0x0800) Internet Protocol, Src Addr: 192.168.2.16 (192.168.2.16), Dst Addr: 198.65.166.144 (198.65.166.144) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 475 Identification: 0x16ee (5870) Flags: 0x04 (Don't Fragment) 0... = Reserved bit: Not set .1.. = Don't fragment: Set ..0. = More fragments: Not set Fragment offset: 0 Time to live: 128 Protocol: TCP (0x06) Header checksum: 0xb2a4 (correct) Source: 192.168.2.16 (192.168.2.16) Destination: 198.65.166.144 (198.65.166.144) Transmission Control Protocol, Src Port: 7534 (7534), Dst Port: 35683 (35683), Seq: 1, Ack: 1497, Len: 423 Source port: 7534 (7534) Destination port: 35683 (35683) Sequence number: 1 (relative sequence number) Next sequence number: 424 (relative sequence number) Acknowledgement number: 1497 (relative ack number) Header length: 32 bytes Flags: 0x0018 (PSH, ACK) 0... .... = Congestion Window Reduced (CWR): Not set .0.. .... = ECN-Echo: Not set ..0. .... = Urgent: Not set ...1 .... = Acknowledgment: Set .... 1... = Push: Set .... .0.. = Reset: Not set .... ..0. = Syn: Not set .... ...0 = Fin: Not set Window size: 65535 Checksum: 0x093b (correct) Options: (12 bytes) NOP NOP Time stamp: tsval 31110, tsecr 961303496 Session Initiation Protocol Status-Line: SIP/2.0 100 Trying Status-Code: 100 Resent Packet: False Message Header Via: SIP/2.0/TCP 198.65.166.131;branch=z9hG4bKaa22.41ffc1f4.1;i=911 Via: SIP/2.0/TCP xxx.xxx.xxx.135:44538 From: "HS User" <sip:17476684616@proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a SIP from address: "HS User" <sip:17476684616@proxy01.sipphone.com> SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a To: <sip:17476685542@sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910 SIP to address: <sip:17476685542@sipphone.com> SIP tag: 161092ccf5a84e5ab90efe06a8771910 Call-ID: 50ff745bbe664826af92e6820b46acda(a)192.168.2.28 CSeq: 1 INVITE User-Agent: RTC/1.2 Content-Length: 0 No. Time Source Destination Protocol Info 30 12.756633 192.168.2.16 198.65.166.144 SIP Status: 180 Ringing Frame 30 (593 bytes on wire, 593 bytes captured) Arrival Time: Aug 16, 2004 13:14:42.414001000 Time delta from previous packet: 0.241838000 seconds Time since reference or first frame: 12.756633000 seconds Frame Number: 30 Packet Length: 593 bytes Capture Length: 593 bytes Ethernet II, Src: 00:08:a1:05:a7:17, Dst: 00:09:5b:a8:af:c8 Destination: 00:09:5b:a8:af:c8 (Netgear_a8:af:c8) Source: 00:08:a1:05:a7:17 (CnetTech_05:a7:17) Type: IP (0x0800) Internet Protocol, Src Addr: 192.168.2.16 (192.168.2.16), Dst Addr: 198.65.166.144 (198.65.166.144) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 579 Identification: 0x16ef (5871) Flags: 0x04 (Don't Fragment) 0... = Reserved bit: Not set .1.. = Don't fragment: Set ..0. = More fragments: Not set Fragment offset: 0 Time to live: 128 Protocol: TCP (0x06) Header checksum: 0xb23b (correct) Source: 192.168.2.16 (192.168.2.16) Destination: 198.65.166.144 (198.65.166.144) Transmission Control Protocol, Src Port: 7534 (7534), Dst Port: 35683 (35683), Seq: 424, Ack: 1497, Len: 527 Source port: 7534 (7534) Destination port: 35683 (35683) Sequence number: 424 (relative sequence number) Next sequence number: 951 (relative sequence number) Acknowledgement number: 1497 (relative ack number) Header length: 32 bytes Flags: 0x0018 (PSH, ACK) 0... .... = Congestion Window Reduced (CWR): Not set .0.. .... = ECN-Echo: Not set ..0. .... = Urgent: Not set ...1 .... = Acknowledgment: Set .... 1... = Push: Set .... .0.. = Reset: Not set .... ..0. = Syn: Not set .... ...0 = Fin: Not set Window size: 65535 Checksum: 0x0931 (correct) Options: (12 bytes) NOP NOP Time stamp: tsval 31113, tsecr 961303529 Session Initiation Protocol Status-Line: SIP/2.0 180 Ringing Status-Code: 180 Resent Packet: False Message Header Via: SIP/2.0/TCP 198.65.166.131;branch=z9hG4bKaa22.41ffc1f4.1;i=911 Via: SIP/2.0/TCP xxx.xxx.xxx.135:44538 From: "HS User" <sip:17476684616@proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a SIP from address: "HS User" <sip:17476684616@proxy01.sipphone.com> SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a To: <sip:17476685542@sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910 SIP to address: <sip:17476685542@sipphone.com> SIP tag: 161092ccf5a84e5ab90efe06a8771910 Call-ID: 50ff745bbe664826af92e6820b46acda(a)192.168.2.28 CSeq: 1 INVITE Record-Route: <sip:17476685542@198.65.166.131;transport=tcp;ftag=8fff010e644f4415a81b01004f5525f3;lr> User-Agent: RTC/1.2 Content-Length: 0 No. Time Source Destination Protocol Info 123 14.874474 192.168.2.16 198.65.166.144 SIP/SDP Status: 200 OK, with session description Frame 123 (1446 bytes on wire, 1446 bytes captured) Arrival Time: Aug 16, 2004 13:14:44.531842000 Time delta from previous packet: 2.117841000 seconds Time since reference or first frame: 14.874474000 seconds Frame Number: 123 Packet Length: 1446 bytes Capture Length: 1446 bytes Ethernet II, Src: 00:08:a1:05:a7:17, Dst: 00:09:5b:a8:af:c8 Destination: 00:09:5b:a8:af:c8 (Netgear_a8:af:c8) Source: 00:08:a1:05:a7:17 (CnetTech_05:a7:17) Type: IP (0x0800) Internet Protocol, Src Addr: 192.168.2.16 (192.168.2.16), Dst Addr: 198.65.166.144 (198.65.166.144) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 1432 Identification: 0x171d (5917) Flags: 0x04 (Don't Fragment) 0... = Reserved bit: Not set .1.. = Don't fragment: Set ..0. = More fragments: Not set Fragment offset: 0 Time to live: 128 Protocol: TCP (0x06) Header checksum: 0xaeb8 (correct) Source: 192.168.2.16 (192.168.2.16) Destination: 198.65.166.144 (198.65.166.144) Transmission Control Protocol, Src Port: 7534 (7534), Dst Port: 35683 (35683), Seq: 951, Ack: 1497, Len: 1380 Source port: 7534 (7534) Destination port: 35683 (35683) Sequence number: 951 (relative sequence number) Next sequence number: 2331 (relative sequence number) Acknowledgement number: 1497 (relative ack number) Header length: 32 bytes Flags: 0x0018 (PSH, ACK) 0... .... = Congestion Window Reduced (CWR): Not set .0.. .... = ECN-Echo: Not set ..0. .... = Urgent: Not set ...1 .... = Acknowledgment: Set .... 1... = Push: Set .... .0.. = Reset: Not set .... ..0. = Syn: Not set .... ...0 = Fin: Not set Window size: 65535 Checksum: 0x2c7e (correct) Options: (12 bytes) NOP NOP Time stamp: tsval 31134, tsecr 961303553 Session Initiation Protocol Status-Line: SIP/2.0 200 OK Status-Code: 200 Resent Packet: False Message Header Via: SIP/2.0/TCP 198.65.166.131;branch=z9hG4bKaa22.41ffc1f4.1;i=911 Via: SIP/2.0/TCP xxx.xxx.xxx.135:44538 From: "HS User" <sip:17476684616@proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a SIP from address: "HS User" <sip:17476684616@proxy01.sipphone.com> SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a To: <sip:17476685542@sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910 SIP to address: <sip:17476685542@sipphone.com> SIP tag: 161092ccf5a84e5ab90efe06a8771910 Call-ID: 50ff745bbe664826af92e6820b46acda(a)192.168.2.28 CSeq: 1 INVITE Record-Route: <sip:17476685542@198.65.166.131;transport=tcp;ftag=8fff010e644f4415a81b01004f5525f3;lr> Contact: <sip:17476685542@sipphone.com:55007;maddr=xxx.xxx.xxx.135;transport=tcp> User-Agent: RTC/1.2 Content-Type: application/sdp Content-Length: 744 Message body Session Description Protocol Session Description Protocol Version (v): 0 Owner/Creator, Session Id (o): - 0 0 IN IP4 xxx.xxx.xxx.135 Owner Username: - Session ID: 0 Session Version: 0 Owner Network Type: IN Owner Address Type: IP4 Owner Address: xxx.xxx.xxx.135 Session Name (s): session Connection Information (c): IN IP4 xxx.xxx.xxx.135 Connection Network Type: IN Connection Address Type: IP4 Connection Address: xxx.xxx.xxx.135 Bandwidth Information (b): CT:1000 Bandwidth Modifier: CT Bandwidth Value: 1000 Time Description, active time (t): 0 0 Session Start Time: 0 Session Stop Time: 0 Media Description, name and address (m): audio 1652 RTP/AVP 97 111 112 6 0 8 4 5 3 101 Media Type: audio Media Port: 1652 Media Proto: RTP/AVP Media Format: 97 Media Format: 111 Media Format: 112 Media Format: 6 Media Format: 0 Media Format: 8 Media Format: 4 Media Format: 5 Media Format: 3 Media Format: 101 Encryption Key (k): base64:4dI9OtfFSOlW3z15eN2eORbIiIgFAqgJ5gdjdsF6zo4 Key Type: base64 Key Data: 4dI9OtfFSOlW3z15eN2eORbIiIgFAqgJ5gdjdsF6zo4 Media Attribute (a): rtpmap:97 red/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 97 red/8000 Media Attribute (a): rtpmap:111 SIREN/16000 Media Attribute Fieldname: rtpmap Media Attribute Value: 111 SIREN/16000 Media Attribute (a): fmtp:111 bitrate=16000 Media Attribute Fieldname: fmtp Media Attribute Value: 111 bitrate=16000 Media Attribute (a): rtpmap:112 G7221/16000 Media Attribute Fieldname: rtpmap Media Attribute Value: 112 G7221/16000 Media Attribute (a): fmtp:112 bitrate=24000 Media Attribute Fieldname: fmtp Media Attribute Value: 112 bitrate=24000 Media Attribute (a): rtpmap:6 DVI4/16000 Media Attribute Fieldname: rtpmap Media Attribute Value: 6 DVI4/16000 Media Attribute (a): rtpmap:0 PCMU/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 0 PCMU/8000 Media Attribute (a): rtpmap:8 PCMA/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 8 PCMA/8000 Media Attribute (a): rtpmap:4 G723/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 4 G723/8000 Media Attribute (a): rtpmap:5 DVI4/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 5 DVI4/8000 Media Attribute (a): rtpmap:3 GSM/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 3 GSM/8000 Media Attribute (a): rtpmap:101 telephone-event/8000 Media Attribute Fieldname: rtpmap Media Attribute Value: 101 telephone-event/8000 Media Attribute (a): fmtp:101 0-16 Media Attribute Fieldname: fmtp Media Attribute Value: 101 0-16 Media Attribute (a): encryption:optional Media Attribute Fieldname: encryption Media Attribute Value: optional Media Description, name and address (m): video 8286 RTP/AVP 34 31 Media Type: video Media Port: 8286 Media Proto: RTP/AVP Media Format: 34 Media Format: 31 Encryption Key (k): base64:NyQLbIpRWBJsB09qGKV79sBoeAt0MZ+swPh1IptHqGw Key Type: base64 Key Data: NyQLbIpRWBJsB09qGKV79sBoeAt0MZ+swPh1IptHqGw Media Attribute (a): rtpmap:34 H263/90000 Media Attribute Fieldname: rtpmap Media Attribute Value: 34 H263/90000 Media Attribute (a): rtpmap:31 H261/90000 Media Attribute Fieldname: rtpmap Media Attribute Value: 31 H261/90000 Media Attribute (a): encryption:optional Media Attribute Fieldname: encryption Media Attribute Value: optional Media Description, name and address (m): application 26567 tcp msdata Media Type: application Media Port: 26567 Media Proto: tcp Media Format: msdata Media Attribute (a): recvonly Media Attribute (a): encryption:optional Media Attribute Fieldname: encryption Media Attribute Value: optional No. Time Source Destination Protocol Info 242 36.216653 192.168.2.16 198.65.166.131 SIP Request: BYE sip:17476685542@198.65.166.131;transport=tcp;ftag=8fff010e644f4415a81b01004f5525f3;lr Frame 242 (597 bytes on wire, 597 bytes captured) Arrival Time: Aug 16, 2004 13:15:05.874021000 Time delta from previous packet: 21.342179000 seconds Time since reference or first frame: 36.216653000 seconds Frame Number: 242 Packet Length: 597 bytes Capture Length: 597 bytes Ethernet II, Src: 00:08:a1:05:a7:17, Dst: 00:09:5b:a8:af:c8 Destination: 00:09:5b:a8:af:c8 (Netgear_a8:af:c8) Source: 00:08:a1:05:a7:17 (CnetTech_05:a7:17) Type: IP (0x0800) Internet Protocol, Src Addr: 192.168.2.16 (192.168.2.16), Dst Addr: 198.65.166.131 (198.65.166.131) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 583 Identification: 0x1744 (5956) Flags: 0x04 (Don't Fragment) 0... = Reserved bit: Not set .1.. = Don't fragment: Set ..0. = More fragments: Not set Fragment offset: 0 Time to live: 128 Protocol: TCP (0x06) Header checksum: 0xb1ef (correct) Source: 192.168.2.16 (192.168.2.16) Destination: 198.65.166.131 (198.65.166.131) Transmission Control Protocol, Src Port: 1078 (1078), Dst Port: 5060 (5060), Seq: 0, Ack: 0, Len: 543 Source port: 1078 (1078) Destination port: 5060 (5060) Sequence number: 0 (relative sequence number) Next sequence number: 543 (relative sequence number) Acknowledgement number: 0 (relative ack number) Header length: 20 bytes Flags: 0x0018 (PSH, ACK) 0... .... = Congestion Window Reduced (CWR): Not set .0.. .... = ECN-Echo: Not set ..0. .... = Urgent: Not set ...1 .... = Acknowledgment: Set .... 1... = Push: Set .... .0.. = Reset: Not set .... ..0. = Syn: Not set .... ...0 = Fin: Not set Window size: 64111 Checksum: 0xcaf9 (correct) Session Initiation Protocol Request-Line: BYE sip:17476685542@198.65.166.131;transport=tcp;ftag=8fff010e644f4415a81b01004f5525f3;lr Method: BYE Resent Packet: False Message Header Via: SIP/2.0/TCP xxx.xxx.xxx.135:55007 Max-Forwards: 70 From: <sip:17476685542@sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910 SIP from address: <sip:17476685542@sipphone.com> SIP tag: 161092ccf5a84e5ab90efe06a8771910 To: "HS User" <sip:17476684616@proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a SIP to address: "HS User" <sip:17476684616@proxy01.sipphone.com> SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a Call-ID: 50ff745bbe664826af92e6820b46acda(a)192.168.2.28 CSeq: 1 BYE Route: <sip:17476684616@proxy01.sipphone.com:44538;maddr=xxx.xxx.xxx.135;transport=tcp;nat=yes> User-Agent: RTC/1.2 Content-Length: 0 No. Time Source Destination Protocol Info 249 36.689918 198.65.166.144 192.168.2.16 SIP Request: BYE sip:xxx.xxx.xxx.135:55007;transport=tcp Frame 249 (698 bytes on wire, 698 bytes captured) Arrival Time: Aug 16, 2004 13:15:06.347286000 Time delta from previous packet: 0.473265000 seconds Time since reference or first frame: 36.689918000 seconds Frame Number: 249 Packet Length: 698 bytes Capture Length: 698 bytes Ethernet II, Src: 00:09:5b:a8:af:c8, Dst: 00:08:a1:05:a7:17 Destination: 00:08:a1:05:a7:17 (CnetTech_05:a7:17) Source: 00:09:5b:a8:af:c8 (Netgear_a8:af:c8) Type: IP (0x0800) Internet Protocol, Src Addr: 198.65.166.144 (198.65.166.144), Dst Addr: 192.168.2.16 (192.168.2.16) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x10 (DSCP 0x04: Unknown DSCP; ECN: 0x00) 0001 00.. = Differentiated Services Codepoint: Unknown (0x04) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 684 Identification: 0x499e (18846) Flags: 0x04 (Don't Fragment) 0... = Reserved bit: Not set .1.. = Don't fragment: Set ..0. = More fragments: Not set Fragment offset: 0 Time to live: 46 Protocol: TCP (0x06) Header checksum: 0xd113 (correct) Source: 198.65.166.144 (198.65.166.144) Destination: 192.168.2.16 (192.168.2.16) Transmission Control Protocol, Src Port: 35749 (35749), Dst Port: 7534 (7534), Seq: 1, Ack: 1, Len: 632 Source port: 35749 (35749) Destination port: 7534 (7534) Sequence number: 1 (relative sequence number) Next sequence number: 633 (relative sequence number) Acknowledgement number: 1 (relative ack number) Header length: 32 bytes Flags: 0x0018 (PSH, ACK) 0... .... = Congestion Window Reduced (CWR): Not set .0.. .... = ECN-Echo: Not set ..0. .... = Urgent: Not set ...1 .... = Acknowledgment: Set .... 1... = Push: Set .... .0.. = Reset: Not set .... ..0. = Syn: Not set .... ...0 = Fin: Not set Window size: 5808 Checksum: 0x04f6 (correct) Options: (12 bytes) NOP NOP Time stamp: tsval 961305922, tsecr 0 Session Initiation Protocol Request-Line: BYE sip:xxx.xxx.xxx.135:55007;transport=tcp SIP/2.0 Method: BYE Resent Packet: False Message Header Record-Route: <sip:17476685542@198.65.166.131;transport=tcp;ftag=161092ccf5a84e5ab90efe06a8771910;lr> Via: SIP/2.0/TCP 198.65.166.131;branch=z9hG4bKaa22.51ffc1f4.1;i=421 Via: SIP/2.0/TCP xxx.xxx.xxx.135:55007 Max-Forwards: 69 From: <sip:17476685542@sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910 SIP from address: <sip:17476685542@sipphone.com> SIP tag: 161092ccf5a84e5ab90efe06a8771910 To: "HS User" <sip:17476684616@proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a SIP to address: "HS User" <sip:17476684616@proxy01.sipphone.com> SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a Call-ID: 50ff745bbe664826af92e6820b46acda(a)192.168.2.28 CSeq: 1 BYE User-Agent: RTC/1.2 Content-Length: 0 P-hint: usrloc routed P-RTP-Proxy: YES P-Behind-NAT: Yes No. Time Source Destination Protocol Info 255 37.002771 192.168.2.16 198.65.166.144 SIP Status: 481 Call Leg/Transaction Does Not Exist Frame 255 (515 bytes on wire, 515 bytes captured) Arrival Time: Aug 16, 2004 13:15:06.660139000 Time delta from previous packet: 0.312853000 seconds Time since reference or first frame: 37.002771000 seconds Frame Number: 255 Packet Length: 515 bytes Capture Length: 515 bytes Ethernet II, Src: 00:08:a1:05:a7:17, Dst: 00:09:5b:a8:af:c8 Destination: 00:09:5b:a8:af:c8 (Netgear_a8:af:c8) Source: 00:08:a1:05:a7:17 (CnetTech_05:a7:17) Type: IP (0x0800) Internet Protocol, Src Addr: 192.168.2.16 (192.168.2.16), Dst Addr: 198.65.166.144 (198.65.166.144) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 501 Identification: 0x1749 (5961) Flags: 0x04 (Don't Fragment) 0... = Reserved bit: Not set .1.. = Don't fragment: Set ..0. = More fragments: Not set Fragment offset: 0 Time to live: 128 Protocol: TCP (0x06) Header checksum: 0xb22f (correct) Source: 192.168.2.16 (192.168.2.16) Destination: 198.65.166.144 (198.65.166.144) Transmission Control Protocol, Src Port: 7534 (7534), Dst Port: 35749 (35749), Seq: 1, Ack: 633, Len: 449 Source port: 7534 (7534) Destination port: 35749 (35749) Sequence number: 1 (relative sequence number) Next sequence number: 450 (relative sequence number) Acknowledgement number: 633 (relative ack number) Header length: 32 bytes Flags: 0x0018 (PSH, ACK) 0... .... = Congestion Window Reduced (CWR): Not set .0.. .... = ECN-Echo: Not set ..0. .... = Urgent: Not set ...1 .... = Acknowledgment: Set .... 1... = Push: Set .... .0.. = Reset: Not set .... ..0. = Syn: Not set .... ...0 = Fin: Not set Window size: 64903 Checksum: 0x94a1 (correct) Options: (12 bytes) NOP NOP Time stamp: tsval 31355, tsecr 961305922 Session Initiation Protocol Status-Line: SIP/2.0 481 Call Leg/Transaction Does Not Exist Status-Code: 481 Resent Packet: False Message Header Via: SIP/2.0/TCP 198.65.166.131;branch=z9hG4bKaa22.51ffc1f4.1;i=421 Via: SIP/2.0/TCP xxx.xxx.xxx.135:55007 From: <sip:17476685542@sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910 SIP from address: <sip:17476685542@sipphone.com> SIP tag: 161092ccf5a84e5ab90efe06a8771910 To: "HS User" <sip:17476684616@proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a SIP to address: "HS User" <sip:17476684616@proxy01.sipphone.com> SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a Call-ID: 50ff745bbe664826af92e6820b46acda(a)192.168.2.28 CSeq: 1 BYE User-Agent: RTC/1.2 Content-Length: 0 SIP/2.0 -- Andrew Mee