[Serusers] [OT?]BYE issues
Andrew Mee
andrew at healthshare.net.au
Mon Aug 16 07:13:43 CEST 2004
Franz Edler wrote:
>>UAC(A)----------------SER-------------UAC(B)
>>
>>if A calls B and then A hangs up all is fine,
>>if A calls B and then B hangs up a 481 Call leg/transaction error
>>occurs, this does not even get sent to the A client, the 481 is
>>generated by SER. B then thinks it is still in a call.
>>
>
>Do you have an ethereal trace? Then I might help.
>
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 at sipphone.com, RTC Client B is 17476685542 at 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 at 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 at proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
SIP from address: "HS User"
<sip:17476684616 at proxy01.sipphone.com>
SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
To: <sip:17476685542 at sipphone.com>
Call-ID: 50ff745bbe664826af92e6820b46acda at 192.168.2.28
CSeq: 1 INVITE
Contact:
<sip:17476684616 at 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 at proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
SIP from address: "HS User"
<sip:17476684616 at proxy01.sipphone.com>
SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
To:
<sip:17476685542 at sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910
SIP to address: <sip:17476685542 at sipphone.com>
SIP tag: 161092ccf5a84e5ab90efe06a8771910
Call-ID: 50ff745bbe664826af92e6820b46acda at 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 at proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
SIP from address: "HS User"
<sip:17476684616 at proxy01.sipphone.com>
SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
To:
<sip:17476685542 at sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910
SIP to address: <sip:17476685542 at sipphone.com>
SIP tag: 161092ccf5a84e5ab90efe06a8771910
Call-ID: 50ff745bbe664826af92e6820b46acda at 192.168.2.28
CSeq: 1 INVITE
Record-Route:
<sip:17476685542 at 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 at proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
SIP from address: "HS User"
<sip:17476684616 at proxy01.sipphone.com>
SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
To:
<sip:17476685542 at sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910
SIP to address: <sip:17476685542 at sipphone.com>
SIP tag: 161092ccf5a84e5ab90efe06a8771910
Call-ID: 50ff745bbe664826af92e6820b46acda at 192.168.2.28
CSeq: 1 INVITE
Record-Route:
<sip:17476685542 at 198.65.166.131;transport=tcp;ftag=8fff010e644f4415a81b01004f5525f3;lr>
Contact:
<sip:17476685542 at 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 at 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 at 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 at sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910
SIP from address: <sip:17476685542 at sipphone.com>
SIP tag: 161092ccf5a84e5ab90efe06a8771910
To: "HS User"
<sip:17476684616 at proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
SIP to address: "HS User" <sip:17476684616 at proxy01.sipphone.com>
SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
Call-ID: 50ff745bbe664826af92e6820b46acda at 192.168.2.28
CSeq: 1 BYE
Route:
<sip:17476684616 at 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 at 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 at sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910
SIP from address: <sip:17476685542 at sipphone.com>
SIP tag: 161092ccf5a84e5ab90efe06a8771910
To: "HS User"
<sip:17476684616 at proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
SIP to address: "HS User" <sip:17476684616 at proxy01.sipphone.com>
SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
Call-ID: 50ff745bbe664826af92e6820b46acda at 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 at sipphone.com>;tag=161092ccf5a84e5ab90efe06a8771910
SIP from address: <sip:17476685542 at sipphone.com>
SIP tag: 161092ccf5a84e5ab90efe06a8771910
To: "HS User"
<sip:17476684616 at proxy01.sipphone.com>;tag=8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
SIP to address: "HS User" <sip:17476684616 at proxy01.sipphone.com>
SIP tag: 8fff010e644f4415a81b01004f5525f3;epid=e062c2bd1a
Call-ID: 50ff745bbe664826af92e6820b46acda at 192.168.2.28
CSeq: 1 BYE
User-Agent: RTC/1.2
Content-Length: 0
SIP/2.0
--
Andrew Mee
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