1. I don't see any ACK packets in the packet dump. Does it work if you
use UDP instead of TCP?
regards,
Klaus
Andrew Mee wrote:
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
------------------------------------------------------------------------
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