On 02/24/2010 08:40 PM, Vikram Ragukumar wrote:
Daniel,

I have tried to summarize the SIP message flow below. I am also including
the entire SIP trace at the end of this message.

       Cell Phone     Kamailio        Phone B
           |              |              |
           |INVITE        |              |
           |------------->|              |
           |100 Trying    |              |
           |<-------------|              |
           |              |INVITE        |
           |              |------------->|
           |              |100 trying    |
           |              |<-------------|
           |              |183SessionProg|
           |              |<-------------|
           |183SessionProg|              |
           |<-------------|              |
           |              |    200 OK    |
           |    200 OK    |<-------------|
           |<-------------|              |
           |     ACK      |              |
           |------------->|              |
           |              |     ACK      |
           |              |------------->|
           |200 OK        |              |
           |<-------------|              |
           |              |     BYE      |
           |              |<-------------|<- BYE,ruri=acco...@voipswitch
           |              |     BYE      |
           |              |------------->|
           |              |     BYE      |
           |              |------------->|


What might be causing VoipSwitch

Which one is the voipswitch in the diagram above? You refer to it but not included in diagram.

Daniel

  to send a BYE with ruri=acco...@voipswitch?
As a result the BYE message never gets forwarded to the cellphone, and the
proxy repeatedly sends BYE messages back to VoipSwitch.

Thanks in advance for your help.
Regards,
Vikram.

PS : Below is the SIP trace for the above call flow.

----------------------------------------------------------------------------
No.     Time        Source                Destination           Protocol Info
      16 5.676114    Cell_phone_gw        Proxy        SIP/SDP  Request:
INVITE sip:1...@voipswitch:5060, with session description

Frame 16 (1264 bytes on wire, 1264 bytes captured)
Ethernet II, Src: 00:26:f2:c8:44:11 (00:26:f2:c8:44:11), Dst:
Supermic_bd:b9:bc (00:30:48:bd:b9:bc)
Internet Protocol, Src: Cell_phone_gw (Cell_phone_gw), Dst: Proxy (Proxy)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
     Request-Line: INVITE sip:1...@voipswitch:5060 SIP/2.0
     Message Header
         Via: SIP/2.0/UDP
192.168.1.101:5060;rport;branch=z9hG4bKPjVuvvDqG5otxrgR6y9gyqnqWOpoBvIGXW
         Max-Forwards: 70
         From: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         To: sip:1...@voipswitch
         Contact: "91131"<sip:91...@192.168.1.101:5060>
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         CSeq: 24680 INVITE
         Route:<sip:Proxy:5060;lr>
         Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY,
REFER, MESSAGE, OPTIONS
         Supported: replaces, 100rel, timer, norefersub
         Session-Expires: 1800
         Min-SE: 90
         Proxy-Authorization: Digest username="91131", realm="VoipSwitch",
nonce="126686109922231105302513908108",
uri="sip:1...@voipswitch:5060",
response="55122bcb903503303164237e62481f52"
         Content-Type: application/sdp
         Content-Length:   379
     Message Body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 3475932668 3475932668 IN IP4
192.168.1.101
             Session Name (s): pjmedia
             Connection Information (c): IN IP4 192.168.1.101
             Time Description, active time (t): 0 0
             Session Attribute (a): X-nat:0
             Media Description, name and address (m): audio 4000 RTP/AVP
114 18 113 0 8 101
             Media Attribute (a): rtcp:4001 IN IP4 192.168.1.101
             Media Attribute (a): rtpmap:114 AMR/8000
             Media Attribute (a): rtpmap:18 G729/8000
             Media Attribute (a): rtpmap:113 iLBC/8000
             Media Attribute (a): fmtp:113 mode=30
             Media Attribute (a): rtpmap:0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
             Media Attribute (a): sendrecv
             Media Attribute (a): rtpmap:101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-15

No.     Time        Source                Destination           Protocol Info
      17 5.744897    Proxy        Cell_phone_gw        SIP      Status: 100
Giving a try

Frame 17 (429 bytes on wire, 429 bytes captured)
Ethernet II, Src: Supermic_bd:b9:bc (00:30:48:bd:b9:bc), Dst:
00:26:f2:c8:44:11 (00:26:f2:c8:44:11)
Internet Protocol, Src: Proxy (Proxy), Dst: Cell_phone_gw (Cell_phone_gw)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
     Status-Line: SIP/2.0 100 Giving a try
     Message Header
         Via: SIP/2.0/UDP
192.168.1.101:5060;rport=5060;branch=z9hG4bKPjVuvvDqG5otxrgR6y9gyqnqWOpoBvIGXW;received=Cell_phone_gw
         From: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         To: sip:1...@voipswitch
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         CSeq: 24680 INVITE
         Server: Kamailio (1.5.3-notls (i386/linux))
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
      18 5.747037    Proxy        VoipSwitch          SIP/SDP  Request:
INVITE sip:1...@voipswitch:5060, with session description

Frame 18 (1434 bytes on wire, 1434 bytes captured)
Ethernet II, Src: Supermic_bd:b9:bc (00:30:48:bd:b9:bc), Dst:
Unispher_40:b5:39 (00:90:1a:40:b5:39)
Internet Protocol, Src: Proxy (Proxy), Dst: VoipSwitch (VoipSwitch)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: sip (5060)
Session Initiation Protocol
     Request-Line: INVITE sip:1...@voipswitch:5060 SIP/2.0
     Message Header
         Record-Route:<sip:Proxy:5060;lr=on;nat=yes>
         Via: SIP/2.0/UDP Proxy:5060;branch=z9hG4bKd5eb.409fb37.0
         Via: SIP/2.0/UDP
192.168.1.101:5060;received=Cell_phone_gw;rport=5060;branch=z9hG4bKPjVuvvDqG5otxrgR6y9gyqnqWOpoBvIGXW
         Max-Forwards: 69
         From: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         To: sip:1...@voipswitch
         Contact: "91131"<sip:91...@cell_phone_gw:5060>
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         CSeq: 24680 INVITE
         Route:<sip:Proxy:5060;lr>
         Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY,
REFER, MESSAGE, OPTIONS
         Supported: replaces, 100rel, timer, norefersub
         Session-Expires: 1800
         Min-SE: 90
         Proxy-Authorization: Digest username="91131", realm="VoipSwitch",
nonce="126686109922231105302513908108",
uri="sip:1...@voipswitch:5060",
response="55122bcb903503303164237e62481f52"
         Content-Type: application/sdp
         Content-Length:   379
         P-hint: outbound
     Message Body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): - 3475932668 3475932668 IN IP4
192.168.1.101
             Session Name (s): pjmedia
             Connection Information (c): IN IP4 Proxy
             Time Description, active time (t): 0 0
             Session Attribute (a): X-nat:0
             Media Description, name and address (m): audio 35752 RTP/AVP
114 18 113 0 8 101
             Media Attribute (a): rtcp:35753
             Media Attribute (a): rtpmap:114 AMR/8000
             Media Attribute (a): rtpmap:18 G729/8000
             Media Attribute (a): rtpmap:113 iLBC/8000
             Media Attribute (a): fmtp:113 mode=30
             Media Attribute (a): rtpmap:0 PCMU/8000
             Media Attribute (a): rtpmap:8 PCMA/8000
             Media Attribute (a): sendrecv
             Media Attribute (a): rtpmap:101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-15
             Media Attribute (a): nortpproxy:yes

No.     Time        Source                Destination           Protocol Info
      19 5.934950    VoipSwitch          Proxy        SIP      Status: 100
Trying

Frame 19 (579 bytes on wire, 579 bytes captured)
Ethernet II, Src: Unispher_40:b5:39 (00:90:1a:40:b5:39), Dst:
Supermic_bd:b9:bc (00:30:48:bd:b9:bc)
Internet Protocol, Src: VoipSwitch (VoipSwitch), Dst: Proxy (Proxy)
User Datagram Protocol, Src Port: sip (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
     Status-Line: SIP/2.0 100 Trying
     Message Header
         CSeq: 24680 INVITE
         Via: SIP/2.0/UDP Proxy:5060;branch=z9hG4bKd5eb.409fb37.0
         Via: SIP/2.0/UDP
192.168.1.101:5060;received=Cell_phone_gw;rport=5060;branch=z9hG4bKPjVuvvDqG5otxrgR6y9gyqnqWOpoBvIGXW
         From: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         To: sip:1...@voipswitch;tag=22025110233933268788916305
         Contact:<sip:VoipSwitch:5060;transport=udp>
         Content-Length: 0
         Record-Route:<sip:Proxy:5060;lr=on;nat=yes>

No.     Time        Source                Destination           Protocol Info
      20 6.707560    VoipSwitch          Proxy        SIP/SDP  Status: 183
Session Progress, with session description

Frame 20 (868 bytes on wire, 868 bytes captured)
Ethernet II, Src: Unispher_40:b5:39 (00:90:1a:40:b5:39), Dst:
Supermic_bd:b9:bc (00:30:48:bd:b9:bc)
Internet Protocol, Src: VoipSwitch (VoipSwitch), Dst: Proxy (Proxy)
User Datagram Protocol, Src Port: sip (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
     Status-Line: SIP/2.0 183 Session Progress
     Message Header
         CSeq: 24680 INVITE
         Via: SIP/2.0/UDP Proxy:5060;branch=z9hG4bKd5eb.409fb37.0
         Via: SIP/2.0/UDP
192.168.1.101:5060;received=Cell_phone_gw;rport=5060;branch=z9hG4bKPjVuvvDqG5otxrgR6y9gyqnqWOpoBvIGXW
         From: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         To: sip:1...@voipswitch;tag=22025110233933268788916305
         Contact:<sip:VoipSwitch:5060;transport=udp>
         Content-Type: application/sdp
         Content-Length: 246
         Record-Route:<sip:Proxy:5060;lr=on;nat=yes>
     Message Body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): VoipSwitch 7304 7304 IN IP4
VoipSwitch
             Session Name (s): VoipSIP
             Session Information (i): Audio Session
             Connection Information (c): IN IP4 VoipSwitch
             Time Description, active time (t): 0 0
             Media Description, name and address (m): audio 6304 RTP/AVP 18
101
             Media Attribute (a): rtpmap:18 G729/8000/1
             Media Attribute (a): fmtp:18 annexb=no
             Media Attribute (a): rtpmap:101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-15
             Media Attribute (a): sendrecv

No.     Time        Source                Destination           Protocol Info
      21 6.734267    Proxy        Cell_phone_gw        SIP/SDP  Status: 183
Session Progress, with session description

Frame 21 (822 bytes on wire, 822 bytes captured)
Ethernet II, Src: Supermic_bd:b9:bc (00:30:48:bd:b9:bc), Dst:
00:26:f2:c8:44:11 (00:26:f2:c8:44:11)
Internet Protocol, Src: Proxy (Proxy), Dst: Cell_phone_gw (Cell_phone_gw)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
     Status-Line: SIP/2.0 183 Session Progress
     Message Header
         CSeq: 24680 INVITE
         Via: SIP/2.0/UDP
192.168.1.101:5060;received=Cell_phone_gw;rport=5060;branch=z9hG4bKPjVuvvDqG5otxrgR6y9gyqnqWOpoBvIGXW
         From: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         To: sip:1...@voipswitch;tag=22025110233933268788916305
         Contact:<sip:VoipSwitch:5060;transport=udp>
         Content-Type: application/sdp
         Content-Length: 267
         Record-Route:<sip:Proxy:5060;lr=on;nat=yes>
     Message Body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): VoipSwitch 7304 7304 IN IP4
VoipSwitch
             Session Name (s): VoipSIP
             Session Information (i): Audio Session
             Connection Information (c): IN IP4 Proxy
             Time Description, active time (t): 0 0
             Media Description, name and address (m): audio 35570 RTP/AVP
18 101
             Media Attribute (a): rtpmap:18 G729/8000/1
             Media Attribute (a): fmtp:18 annexb=no
             Media Attribute (a): rtpmap:101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-15
             Media Attribute (a): sendrecv
             Media Attribute (a): nortpproxy:yes

No.     Time        Source                Destination           Protocol Info
      22 15.889935   Cell_phone_gw        Proxy        UDP      Source
port: 5060  Destination port: 5060

Frame 22 (60 bytes on wire, 60 bytes captured)
Ethernet II, Src: 00:26:f2:c8:44:11 (00:26:f2:c8:44:11), Dst:
Supermic_bd:b9:bc (00:30:48:bd:b9:bc)
Internet Protocol, Src: Cell_phone_gw (Cell_phone_gw), Dst: Proxy (Proxy)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Data (2 bytes)

0000  0d 0a                                             ..

No.     Time        Source                Destination           Protocol Info
      23 19.801513   VoipSwitch          Proxy        SIP/SDP  Status: 200
OK, with session description

Frame 23 (854 bytes on wire, 854 bytes captured)
Ethernet II, Src: Unispher_40:b5:39 (00:90:1a:40:b5:39), Dst:
Supermic_bd:b9:bc (00:30:48:bd:b9:bc)
Internet Protocol, Src: VoipSwitch (VoipSwitch), Dst: Proxy (Proxy)
User Datagram Protocol, Src Port: sip (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
     Message Header
         CSeq: 24680 INVITE
         Via: SIP/2.0/UDP Proxy:5060;branch=z9hG4bKd5eb.409fb37.0
         Via: SIP/2.0/UDP
192.168.1.101:5060;received=Cell_phone_gw;rport=5060;branch=z9hG4bKPjVuvvDqG5otxrgR6y9gyqnqWOpoBvIGXW
         From: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         To: sip:1...@voipswitch;tag=22025110233933268788916305
         Contact:<sip:VoipSwitch:5060;transport=udp>
         Content-Type: application/sdp
         Content-Length: 246
         Record-Route:<sip:Proxy:5060;lr=on;nat=yes>
     Message Body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): VoipSwitch 7304 7304 IN IP4
VoipSwitch
             Session Name (s): VoipSIP
             Session Information (i): Audio Session
             Connection Information (c): IN IP4 VoipSwitch
             Time Description, active time (t): 0 0
             Media Description, name and address (m): audio 6304 RTP/AVP 18
101
             Media Attribute (a): rtpmap:18 G729/8000/1
             Media Attribute (a): fmtp:18 annexb=no
             Media Attribute (a): rtpmap:101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-15
             Media Attribute (a): sendrecv

No.     Time        Source                Destination           Protocol Info
      24 19.851387   Proxy        Cell_phone_gw        SIP/SDP  Status: 200
OK, with session description

Frame 24 (808 bytes on wire, 808 bytes captured)
Ethernet II, Src: Supermic_bd:b9:bc (00:30:48:bd:b9:bc), Dst:
00:26:f2:c8:44:11 (00:26:f2:c8:44:11)
Internet Protocol, Src: Proxy (Proxy), Dst: Cell_phone_gw (Cell_phone_gw)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
     Status-Line: SIP/2.0 200 OK
     Message Header
         CSeq: 24680 INVITE
         Via: SIP/2.0/UDP
192.168.1.101:5060;received=Cell_phone_gw;rport=5060;branch=z9hG4bKPjVuvvDqG5otxrgR6y9gyqnqWOpoBvIGXW
         From: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         To: sip:1...@voipswitch;tag=22025110233933268788916305
         Contact:<sip:VoipSwitch:5060;transport=udp>
         Content-Type: application/sdp
         Content-Length: 267
         Record-Route:<sip:Proxy:5060;lr=on;nat=yes>
     Message Body
         Session Description Protocol
             Session Description Protocol Version (v): 0
             Owner/Creator, Session Id (o): VoipSwitch 7304 7304 IN IP4
VoipSwitch
             Session Name (s): VoipSIP
             Session Information (i): Audio Session
             Connection Information (c): IN IP4 Proxy
             Time Description, active time (t): 0 0
             Media Description, name and address (m): audio 35570 RTP/AVP
18 101
             Media Attribute (a): rtpmap:18 G729/8000/1
             Media Attribute (a): fmtp:18 annexb=no
             Media Attribute (a): rtpmap:101 telephone-event/8000
             Media Attribute (a): fmtp:101 0-15
             Media Attribute (a): sendrecv
             Media Attribute (a): nortpproxy:yes

No.     Time        Source                Destination           Protocol Info
      25 19.860918   Cell_phone_gw        Proxy        SIP      Request:
ACK sip:VoipSwitch:5060;transport=udp

Frame 25 (470 bytes on wire, 470 bytes captured)
Ethernet II, Src: 00:26:f2:c8:44:11 (00:26:f2:c8:44:11), Dst:
Supermic_bd:b9:bc (00:30:48:bd:b9:bc)
Internet Protocol, Src: Cell_phone_gw (Cell_phone_gw), Dst: Proxy (Proxy)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
     Request-Line: ACK sip:VoipSwitch:5060;transport=udp SIP/2.0
     Message Header
         Via: SIP/2.0/UDP
192.168.1.101:5060;rport;branch=z9hG4bKPj3R8VFolrcYnGiHZ65Foh4rL9rghVDXUW
         Max-Forwards: 70
         From: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         To: sip:1...@voipswitch;tag=22025110233933268788916305
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         CSeq: 24680 ACK
         Route:<sip:Proxy:5060;lr;nat=yes>
         Content-Length:  0

No.     Time        Source                Destination           Protocol Info
      26 19.901346   Proxy        VoipSwitch          SIP      Request: ACK
sip:VoipSwitch:5060;transport=udp

Frame 26 (521 bytes on wire, 521 bytes captured)
Ethernet II, Src: Supermic_bd:b9:bc (00:30:48:bd:b9:bc), Dst:
Unispher_40:b5:39 (00:90:1a:40:b5:39)
Internet Protocol, Src: Proxy (Proxy), Dst: VoipSwitch (VoipSwitch)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: sip (5060)
Session Initiation Protocol
     Request-Line: ACK sip:VoipSwitch:5060;transport=udp SIP/2.0
     Message Header
         Via: SIP/2.0/UDP Proxy:5060;branch=z9hG4bKd5eb.409fb37.2
         Via: SIP/2.0/UDP
192.168.1.101:5060;received=Cell_phone_gw;rport=5060;branch=z9hG4bKPj3R8VFolrcYnGiHZ65Foh4rL9rghVDXUW
         Max-Forwards: 69
         From: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         To: sip:1...@voipswitch;tag=22025110233933268788916305
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         CSeq: 24680 ACK
         Content-Length:  0

No.     Time        Source                Destination           Protocol Info
      27 27.987188   VoipSwitch          Proxy        SIP      Request: BYE
sip:91...@voipswitch

Frame 27 (420 bytes on wire, 420 bytes captured)
Ethernet II, Src: Unispher_40:b5:39 (00:90:1a:40:b5:39), Dst:
Supermic_bd:b9:bc (00:30:48:bd:b9:bc)
Internet Protocol, Src: VoipSwitch (VoipSwitch), Dst: Proxy (Proxy)
User Datagram Protocol, Src Port: sip (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
     Request-Line: BYE sip:91...@voipswitch SIP/2.0
     Message Header
         Route:<sip:Proxy:5060;lr=on;nat=yes>
         CSeq: 1 BYE
         Via: SIP/2.0/UDP
VoipSwitch:5060;branch=z9hG4bk220252102301223326901297
         From: sip:1...@voipswitch;tag=22025110233933268788916305
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         To: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
      28 28.211030   Proxy        VoipSwitch          SIP      Request: BYE
sip:91...@voipswitch

Frame 28 (490 bytes on wire, 490 bytes captured)
Ethernet II, Src: Supermic_bd:b9:bc (00:30:48:bd:b9:bc), Dst:
Unispher_40:b5:39 (00:90:1a:40:b5:39)
Internet Protocol, Src: Proxy (Proxy), Dst: VoipSwitch (VoipSwitch)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: sip (5060)
Session Initiation Protocol
     Request-Line: BYE sip:91...@voipswitch SIP/2.0
     Message Header
         Max-Forwards: 10
         CSeq: 1 BYE
         Via: SIP/2.0/UDP Proxy:5060;branch=z9hG4bKa0bd.f0181ba.0
         Via: SIP/2.0/UDP
VoipSwitch:5060;rport=5060;received=VoipSwitch;branch=z9hG4bk220252102301223326901297
         From: sip:1...@voipswitch;tag=22025110233933268788916305
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         To: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
      29 28.698172   Proxy        VoipSwitch          SIP      Request: BYE
sip:91...@voipswitch

Frame 29 (490 bytes on wire, 490 bytes captured)
Ethernet II, Src: Supermic_bd:b9:bc (00:30:48:bd:b9:bc), Dst:
Unispher_40:b5:39 (00:90:1a:40:b5:39)
Internet Protocol, Src: Proxy (Proxy), Dst: VoipSwitch (VoipSwitch)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: sip (5060)
Session Initiation Protocol
     Request-Line: BYE sip:91...@voipswitch SIP/2.0
     Message Header
         Max-Forwards: 10
         CSeq: 1 BYE
         Via: SIP/2.0/UDP Proxy:5060;branch=z9hG4bKa0bd.f0181ba.0
         Via: SIP/2.0/UDP
VoipSwitch:5060;rport=5060;received=VoipSwitch;branch=z9hG4bk220252102301223326901297
         From: sip:1...@voipswitch;tag=22025110233933268788916305
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         To: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
      30 29.698214   Proxy        VoipSwitch          SIP      Request: BYE
sip:91...@voipswitch

Frame 30 (490 bytes on wire, 490 bytes captured)
Ethernet II, Src: Supermic_bd:b9:bc (00:30:48:bd:b9:bc), Dst:
Unispher_40:b5:39 (00:90:1a:40:b5:39)
Internet Protocol, Src: Proxy (Proxy), Dst: VoipSwitch (VoipSwitch)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: sip (5060)
Session Initiation Protocol
     Request-Line: BYE sip:91...@voipswitch SIP/2.0
     Message Header
         Max-Forwards: 10
         CSeq: 1 BYE
         Via: SIP/2.0/UDP Proxy:5060;branch=z9hG4bKa0bd.f0181ba.0
         Via: SIP/2.0/UDP
VoipSwitch:5060;rport=5060;received=VoipSwitch;branch=z9hG4bk220252102301223326901297
         From: sip:1...@voipswitch;tag=22025110233933268788916305
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         To: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         Content-Length: 0

No.     Time        Source                Destination           Protocol Info
      31 30.941201   Cell_phone_gw        Proxy        UDP      Source
port: 5060  Destination port: 5060

Frame 31 (60 bytes on wire, 60 bytes captured)
Ethernet II, Src: 00:26:f2:c8:44:11 (00:26:f2:c8:44:11), Dst:
Supermic_bd:b9:bc (00:30:48:bd:b9:bc)
Internet Protocol, Src: Cell_phone_gw (Cell_phone_gw), Dst: Proxy (Proxy)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Data (2 bytes)

0000  0d 0a                                             ..

No.     Time        Source                Destination           Protocol Info
      32 31.699278   Proxy        VoipSwitch          SIP      Request: BYE
sip:91...@voipswitch

Frame 32 (490 bytes on wire, 490 bytes captured)
Ethernet II, Src: Supermic_bd:b9:bc (00:30:48:bd:b9:bc), Dst:
Unispher_40:b5:39 (00:90:1a:40:b5:39)
Internet Protocol, Src: Proxy (Proxy), Dst: VoipSwitch (VoipSwitch)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: sip (5060)
Session Initiation Protocol
     Request-Line: BYE sip:91...@voipswitch SIP/2.0
     Message Header
         Max-Forwards: 10
         CSeq: 1 BYE
         Via: SIP/2.0/UDP Proxy:5060;branch=z9hG4bKa0bd.f0181ba.0
         Via: SIP/2.0/UDP
VoipSwitch:5060;rport=5060;received=VoipSwitch;branch=z9hG4bk220252102301223326901297
         From: sip:1...@voipswitch;tag=22025110233933268788916305
         Call-ID: s2iBR8MRCrDGTcqUah7j9RqDfbqDzefD
         To: "91131"
<sip:91...@voipswitch>;tag=TT8yqL1H.F8Pw9K1m.p38ry157WF5xdK
         Content-Length: 0
----------------------------------------------------------------------------

Hello,
can you post the entire call flow, from initial invite to to the bye.
There is some mistake done somewhere in the routing elements. The sip
trace will help to identify where.
Cheers,
Daniel



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--
Daniel-Constantin Mierla
Kamailio SIP Router Masterclass, Berlin, March 22-26, 2010
* http://www.asipto.com/index.php/sip-router-masterclass/


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