[SIPForum-discussion] SDP Message in SIP problem. Please Help.

Kristine Regis kristine at racequeen.ph
Tue Jul 28 07:09:40 UTC 2009


Hi,

Thank you for the reply. I have the wireshark trace. The SDP Message is 
already updated and the payload 101 is already there but still there is 
no voice streaming happening.

The trace is the following:

No.     Time        Source                Destination           Protocol 
Info
      7 1.105177    172.16.100.21         172.16.100.20         SIP/SDP  
Request: INVITE sip:1011 at ws20.racequeen.local, with session description

Frame 7 (671 bytes on wire, 671 bytes captured)
Ethernet II, Src: HonHaiPr_59:bf:74 (00:22:68:59:bf:74), Dst: 
HonHaiPr_59:bf:7a (00:22:68:59:bf:7a)
Internet Protocol, Src: 172.16.100.21 (172.16.100.21), Dst: 
172.16.100.20 (172.16.100.20)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol
    Request-Line: INVITE sip:1011 at ws20.racequeen.local SIP/2.0
    Message Header
        Max-Forwards: 69
        Content-Length: 222
        To: <sip:1011 at ws20.racequeen.local>
        Contact: <sip:172.16.100.21:5060;fid=server_1>
        Cseq: 1 INVITE
        Via: SIP/2.0/UDP 
172.16.100.21:5060;branch=z9hG4bKdaacb94b87d8c96340dbb28986e8f78f78bd
        Content-Type: application/sdp
        Call-Id: 172.16.100.21_3_5421782881147155363
        From: <sip:1009 at ws20.racequeen.local>;tag=fxo1xri9-3
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): root 3457739521 3457739521 IN 
IP4 ws21.racequeen.local
            Session Name (s): -
            Connection Information (c): IN IP4 ws21.racequeen.local
            Time Description, active time (t): 0 0
            Media Description, name and address (m): audio 32346 RTP/AVP 
0 8 101
            Media Attribute (a): rtpmap:0 PCMU/8000
            Media Attribute (a): rtpmap:8 PCMA/8000
            Media Attribute (a): rtpmap:101 telephone-event/8000
            Media Attribute (a): fmtp:101 0-15

No.     Time        Source                Destination           Protocol 
Info
      8 1.107079    172.16.100.20         172.16.100.21         SIP      
Status: 407 Proxy Authentication Required

Frame 8 (547 bytes on wire, 547 bytes captured)
Ethernet II, Src: HonHaiPr_59:bf:7a (00:22:68:59:bf:7a), Dst: 
HonHaiPr_59:bf:74 (00:22:68:59:bf:74)
Internet Protocol, Src: 172.16.100.20 (172.16.100.20), Dst: 
172.16.100.21 (172.16.100.21)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol
    Status-Line: SIP/2.0 407 Proxy Authentication Required
    Message Header
        To: 
<sip:1011 at ws20.racequeen.local>;tag=c97b4d1cb1f3d0da549e06a8d482ef63.7440
        Cseq: 1 INVITE
        Via: SIP/2.0/UDP 
172.16.100.21:5060;branch=z9hG4bKdaacb94b87d8c96340dbb28986e8f78f78bd
        Call-Id: 172.16.100.21_3_5421782881147155363
        From: <sip:1009 at ws20.racequeen.local>;tag=fxo1xri9-3
        Proxy-Authenticate: Digest realm="ws20.racequeen.local", 
nonce="4a6e6ca0000000026de77af5ef8dceea597d1fa785a4ee52"
        Server: OpenSIPS (1.5.1-tls (i386/linux))
        Content-Length: 0

No.     Time        Source                Destination           Protocol 
Info
      9 1.166012    172.16.100.21         172.16.100.20         SIP      
Request: ACK sip:1011 at ws20.racequeen.local

Frame 9 (404 bytes on wire, 404 bytes captured)
Ethernet II, Src: HonHaiPr_59:bf:74 (00:22:68:59:bf:74), Dst: 
HonHaiPr_59:bf:7a (00:22:68:59:bf:7a)
Internet Protocol, Src: 172.16.100.21 (172.16.100.21), Dst: 
172.16.100.20 (172.16.100.20)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol
    Request-Line: ACK sip:1011 at ws20.racequeen.local SIP/2.0
    Message Header
        Max-Forwards: 70
        Content-Length: 0
        To: 
<sip:1011 at ws20.racequeen.local>;tag=c97b4d1cb1f3d0da549e06a8d482ef63.7440
        Cseq: 1 ACK
        Via: SIP/2.0/UDP 
172.16.100.21:5060;branch=z9hG4bKdaacb94b87d8c96340dbb28986e8f78f78bd
        Call-Id: 172.16.100.21_3_5421782881147155363
        From: <sip:1009 at ws20.racequeen.local>;tag=fxo1xri9-3

No.     Time        Source                Destination           Protocol 
Info
     10 1.214436    172.16.100.21         172.16.100.20         SIP/SDP  
Request: INVITE sip:1011 at ws20.racequeen.local, with session description

Frame 10 (901 bytes on wire, 901 bytes captured)
Ethernet II, Src: HonHaiPr_59:bf:74 (00:22:68:59:bf:74), Dst: 
HonHaiPr_59:bf:7a (00:22:68:59:bf:7a)
Internet Protocol, Src: 172.16.100.21 (172.16.100.21), Dst: 
172.16.100.20 (172.16.100.20)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol
    Request-Line: INVITE sip:1011 at ws20.racequeen.local SIP/2.0
    Message Header
        Max-Forwards: 69
        Proxy-Authorization: Digest algorithm=MD5, username="1009", 
realm="ws20.racequeen.local", 
nonce="4a6e6ca0000000026de77af5ef8dceea597d1fa785a4ee52", 
uri="sip:1011 at ws20.racequeen.local", 
response="11238a9c03294b7a304d2746d7473168"
        Content-Length: 222
        To: <sip:1011 at ws20.racequeen.local>
        Contact: <sip:172.16.100.21:5060;fid=server_1>
        Cseq: 2 INVITE
        Via: SIP/2.0/UDP 
172.16.100.21:5060;branch=z9hG4bKdaac3bcf533d13cc42b7a6421db7f67c6376
        Content-Type: application/sdp
        From: <sip:1009 at ws20.racequeen.local>;tag=fxo1xri9-3
        Call-Id: 172.16.100.21_3_5421782881147155363
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): root 3457739522 3457739522 IN 
IP4 ws21.racequeen.local
            Session Name (s): -
            Connection Information (c): IN IP4 ws21.racequeen.local
            Time Description, active time (t): 0 0
            Media Description, name and address (m): audio 32346 RTP/AVP 
0 8 101
            Media Attribute (a): rtpmap:0 PCMU/8000
            Media Attribute (a): rtpmap:8 PCMA/8000
            Media Attribute (a): rtpmap:101 telephone-event/8000
            Media Attribute (a): fmtp:101 0-15

No.     Time        Source                Destination           Protocol 
Info
     16 1.220290    172.16.100.20         172.16.100.21         SIP      
Status: 100 Giving a try

Frame 16 (373 bytes on wire, 373 bytes captured)
Ethernet II, Src: HonHaiPr_59:bf:7a (00:22:68:59:bf:7a), Dst: 
HonHaiPr_59:bf:74 (00:22:68:59:bf:74)
Internet Protocol, Src: 172.16.100.20 (172.16.100.20), Dst: 
172.16.100.21 (172.16.100.21)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol
    Status-Line: SIP/2.0 100 Giving a try
    Message Header
        To: <sip:1011 at ws20.racequeen.local>
        Cseq: 2 INVITE
        Via: SIP/2.0/UDP 
172.16.100.21:5060;branch=z9hG4bKdaac3bcf533d13cc42b7a6421db7f67c6376
        From: <sip:1009 at ws20.racequeen.local>;tag=fxo1xri9-3
        Call-Id: 172.16.100.21_3_5421782881147155363
        Server: OpenSIPS (1.5.1-tls (i386/linux))
        Content-Length: 0

No.     Time        Source                Destination           Protocol 
Info
     29 1.275839    172.16.100.20         172.16.100.21         SIP      
Status: 180 Ringing

Frame 29 (470 bytes on wire, 470 bytes captured)
Ethernet II, Src: HonHaiPr_59:bf:7a (00:22:68:59:bf:7a), Dst: 
HonHaiPr_59:bf:74 (00:22:68:59:bf:74)
Internet Protocol, Src: 172.16.100.20 (172.16.100.20), Dst: 
172.16.100.21 (172.16.100.21)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol
    Status-Line: SIP/2.0 180 Ringing
    Message Header
        Max-Forwards: 70
        Record-Route: <sip:172.16.100.20;lr=on;did=d53.8b77d2a>
        To: <sip:1011 at ws20.racequeen.local>;tag=1992049861
        CSeq: 2 INVITE
        Via: SIP/2.0/UDP 
172.16.100.21:5060;branch=z9hG4bKdaac3bcf533d13cc42b7a6421db7f67c6376
        From: <sip:1009 at ws20.racequeen.local>;tag=fxo1xri9-3
        Call-ID: 172.16.100.21_3_5421782881147155363
        Contact: <sip:1011 at 172.16.100.20:45604;transport=udp>
        Content-Length: 0

No.     Time        Source                Destination           Protocol 
Info
     41 1.781782    172.16.100.20         172.16.100.21         SIP      
Status: 180 Ringing

Frame 41 (470 bytes on wire, 470 bytes captured)
Ethernet II, Src: HonHaiPr_59:bf:7a (00:22:68:59:bf:7a), Dst: 
HonHaiPr_59:bf:74 (00:22:68:59:bf:74)
Internet Protocol, Src: 172.16.100.20 (172.16.100.20), Dst: 
172.16.100.21 (172.16.100.21)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol
    Status-Line: SIP/2.0 180 Ringing
    Message Header
        Max-Forwards: 70
        Record-Route: <sip:172.16.100.20;lr=on;did=d53.8b77d2a>
        To: <sip:1011 at ws20.racequeen.local>;tag=1992049861
        CSeq: 2 INVITE
        Via: SIP/2.0/UDP 
172.16.100.21:5060;branch=z9hG4bKdaac3bcf533d13cc42b7a6421db7f67c6376
        From: <sip:1009 at ws20.racequeen.local>;tag=fxo1xri9-3
        Call-ID: 172.16.100.21_3_5421782881147155363
        Contact: <sip:1011 at 172.16.100.20:45604;transport=udp>
        Content-Length: 0

No.     Time        Source                Destination           Protocol 
Info
     54 3.930376    172.16.100.20         172.16.100.21         SIP/SDP  
Status: 200 OK, with session description

Frame 54 (656 bytes on wire, 656 bytes captured)
Ethernet II, Src: HonHaiPr_59:bf:7a (00:22:68:59:bf:7a), Dst: 
HonHaiPr_59:bf:74 (00:22:68:59:bf:74)
Internet Protocol, Src: 172.16.100.20 (172.16.100.20), Dst: 
172.16.100.21 (172.16.100.21)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol
    Status-Line: SIP/2.0 200 OK
    Message Header
        Max-Forwards: 70
        Record-Route: <sip:172.16.100.20;lr=on;did=d53.8b77d2a>
        To: <sip:1011 at ws20.racequeen.local>;tag=1992049861
        CSeq: 2 INVITE
        Via: SIP/2.0/UDP 
172.16.100.21:5060;branch=z9hG4bKdaac3bcf533d13cc42b7a6421db7f67c6376
        From: <sip:1009 at ws20.racequeen.local>;tag=fxo1xri9-3
        Call-ID: 172.16.100.21_3_5421782881147155363
        Contact: <sip:1011 at 172.16.100.20:45604;transport=udp>
        Content-Type: application/sdp
        Content-Length: 158
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): - 3344 3344 IN IP4 172.16.100.20
            Session Name (s): Minisip Session
            Time Description, active time (t): 0 0
            Media Description, name and address (m): audio 30216 RTP/AVP 0
            Connection Information (c): IN IP4 172.16.100.20
            Media Attribute (a): fmtp:0 PCMU/8000
            Media Attribute (a): rtpmap:0 PCMU/8000

No.     Time        Source                Destination           Protocol 
Info
     64 3.976924    172.16.100.21         172.16.100.20         SIP/SDP  
Request: ACK sip:1011 at 172.16.100.20:45604;transport=udp, with session 
description

Frame 64 (631 bytes on wire, 631 bytes captured)
Ethernet II, Src: HonHaiPr_59:bf:74 (00:22:68:59:bf:74), Dst: 
HonHaiPr_59:bf:7a (00:22:68:59:bf:7a)
Internet Protocol, Src: 172.16.100.21 (172.16.100.21), Dst: 
172.16.100.20 (172.16.100.20)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol
    Request-Line: ACK sip:1011 at 172.16.100.20:45604;transport=udp SIP/2.0
    Message Header
        Max-Forwards: 69
        Content-Length: 158
        To: <sip:1011 at ws20.racequeen.local>;tag=1992049861
        Cseq: 2 ACK
        Via: SIP/2.0/UDP 
172.16.100.21:5060;branch=z9hG4bKdaac9271347a14484bd68fca9e4cc9a21e2a
        Content-Type: application/sdp
        Route: <sip:172.16.100.20;lr=on;did=d53.8b77d2a>
        From: <sip:1009 at ws20.racequeen.local>;tag=fxo1xri9-3
        Call-Id: 172.16.100.21_3_5421782881147155363
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): - 3344 3344 IN IP4 172.16.100.20
            Session Name (s): Minisip Session
            Time Description, active time (t): 0 0
            Media Description, name and address (m): audio 30216 RTP/AVP 0
            Connection Information (c): IN IP4 172.16.100.20
            Media Attribute (a): fmtp:0 PCMU/8000
            Media Attribute (a): rtpmap:0 PCMU/8000

I do not know what really is the problem why both parties cannot hear 
each other. Please help me solve this.. Thank you very much..

Venkata Ramesh B wrote:
> Hi Kristine,
>
> The SDP has a problem that the rtpmap line is missing for payload 101 
> and it is mandatory. Since you say that the INVITE is accepted by the 
> server, it is hard to say if that is the real problem. Do you have the 
> full wireshark trace ?
>
> Best Regards,
> Ramesh.
>
> On Sat, Jul 25, 2009 at 9:38 AM, Kristine Regis <kristine at racequeen.ph 
> <mailto:kristine at racequeen.ph>> wrote:
>
>     Hi, I hope anyone could help me figure out what's the problem here.
>
>     I am currently developing a SIP Call. The flow of the call from INVITE
>     to BYE is correct, as I assume since the server accepted it - the
>     server
>     is OpenSIPs. My SDP is as follows:
>
>     v=0
>     o=root 3457409648 3457409648 IN IP4 172.16.100.21
>     s=-
>     c=IN IP4 172.16.100.21
>     t=0 0
>     m=audio 5060 RTP/AVP 0 8 101
>     a=rtpmap:0 PCMU/8000
>     a=rtpmap:8 PCMA/8000
>
>
>     I have this SDP and the voice streaming cannot be done. The caller and
>     the call cannot here each other. I don't know what is the problem here
>     or if the SDP above is wrong.
>
>     I hope you could help me solve this problem. Thank you.
>     _______________________________________________
>     This is the SIP Forum discussion mailing list
>     TO UNSUBSCRIBE, or edit your delivery options, please visit
>     http://sipforum.org/mailman/listinfo/discussion
>     Post to the list at discussion at sipforum.org
>     <mailto:discussion at sipforum.org>
>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20090728/d84eb170/attachment-0002.html>


More information about the discussion mailing list