[Users] Cisco Gateway Disconnects the call

Klaus Darilion klaus.mailinglists at pernau.at
Thu Jul 13 11:20:22 CEST 2006


Hi!

next time, please use the "-W byline" switch of ngrep.

The problem is the ACK - it is totally wrong - the request URI and the 
Route header is bad

If your client is RFC3261 complient, it should put the URI from the 
Contact of the 200 OK into the request URI, not the URI of the 
Record-Route header (this is the old SIP RFC behaviour).

Also if your client uses the old way (strict router), it has to put the 
complete Contact URI of the 200 Ok into the Route header.

Which client are you use?

regards
klaus




Hamid Ali Asgari wrote:
> Hi,
> 
>  
> 
> Here comes the dump from ngrep for a sample call.
> 
>  
> 
> Any idea what’s wrong?
> 
>  
> 
> Thanks,
> 
> Hamid
> 
>  
> 
> input: 102-to-C3660.sip.cap
> 
> #
> 
> U 192.168.11.102:5060 -> 85.15.7.18:5060
> 
>   INVITE sip:0098146 at shatel.ir SIP/2.0..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;
> 
>   branch=z9hG4bK10145..To: 0098146 <sip:0098146 at shatel.ir>..From: 
> 102 at shatel.
> 
>   ir <sip:102 at shatel.ir>;tag=analog-sip28734..Call-ID: 
> 32268 at 192.168.11.102..
> 
>   CSeq: 101 INVITE..Contact: 
> <sip:102 at 192.168.11.102:5060>..Max-Forwards: 70.
> 
>   .Allow: INVITE, BYE, CANCEL, ACK, OPTIONS, REFER, NOTIFY..Supported: 
> replac
> 
>   es..Content-Type: application/sdp..Content-Length: 
> 251....v=0..o=adiPhone 3
> 
>   2268 32268 IN IP4 192.168.11.102..s=Phone Call..c=IN IP4 
> 192.168.11.102..t=
> 
>   0 0..m=audio 6000 RTP/AVP 18 0 8 103..a=rtpmap:18 
> G729/8000/1..a=rtpmap:0 P
> 
>   CMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:103 
> telephone-event/8000..a=fmtp:1
> 
>   03 
> 0-15..                                                                 
> 
> #
> 
> U 85.15.7.18:5060 -> 85.15.7.19:5060
> 
>   INVITE sip:0098146 at shatel.ir SIP/2.0..Record-Route: 
> <sip:85.15.7.18;ftag=an
> 
>   alog-sip28734;lr=on>..Via: SIP/2.0/UDP 85.15.7.18;branch=0..Via: 
> SIP/2.0/UD
> 
>   P 192.168.11.102:5060;branch=z9hG4bK10145..To: 0098146 
> <sip:0098146 at shatel.
> 
>   ir>..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=analog-sip28734..Call-ID:
> 
>   32268 at 192.168.11.102..CSeq: 101 INVITE..Contact: 
> <sip:102 at 192.168.11.102:50
> 
>   60>..Max-Forwards: 69..Allow: INVITE, BYE, CANCEL, ACK, OPTIONS, 
> REFER, NOT
> 
>   IFY..Supported: replaces..Content-Type: 
> application/sdp..Content-Length: 25
> 
>   1....v=0..o=adiPhone 32268 32268 IN IP4 192.168.11.102..s=Phone 
> Call..c=IN
> 
>   IP4 192.168.11.102..t=0 0..m=audio 6000 RTP/AVP 18 0 8 
> 103..a=rtpmap:18 G72
> 
>   9/8000/1..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:103 
> telephon
> 
>   e-event/8000..a=fmtp:103 
> 0-15..                                           
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   SIP/2.0 100 trying -- your call is important to us..Via: SIP/2.0/UDP 
> 192.16
> 
>   8.11.102:5060;branch=z9hG4bK10145..To: 0098146 
> <sip:0098146 at shatel.ir>..Fro
> 
>   m: 102 at shatel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..Call-ID: 
> 32268 at 19
> 
>   2.168.11.102..CSeq: 101 INVITE..Server: OpenSer (1.0.1 
> (i386/linux))..Conte
> 
>   nt-Length: 0..Warning: 392 85.15.7.18:5060 "Noisy feedback tells:  
> pid=6514
> 
>    req_src_ip=192.168.11.102 req_src_port=5060 
> in_uri=sip:0098146 at shatel.ir o
> 
>   ut_uri=sip:0098146 at shatel.ir 
> via_cnt==1"....                              
> 
> #
> 
> U 85.15.7.19:5060 -> 85.15.7.18:5060
> 
>   SIP/2.0 100 Trying..Via: SIP/2.0/UDP 85.15.7.18;branch=0,SIP/2.0/UDP 
> 192.16
> 
>   8.11.102:5060;branch=z9hG4bK10145..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;
> 
>   tag=analog-sip28734..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9A65C-1F0E..Da
> 
>   te: Fri, 01 Mar 2002 00:10:32 GMT..Call-ID: 
> 32268 at 192.168.11.102..Server: C
> 
>   isco-SIPGateway/IOS-12.x..CSeq: 101 INVITE..Allow-Events: 
> telephone-event..
> 
>   Content-Length: 
> 0....                                                     
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   SIP/2.0 100 Trying..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;branch=z9hG4bK1014
> 
>   5..From: 102 at shatel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..To: 
> 0098146
> 
>    <sip:0098146 at shatel.ir>;tag=9A65C-1F0E..Date: Fri, 01 Mar 2002 
> 00:10:32 GM
> 
>   T..Call-ID: 32268 at 192.168.11.102..Server: 
> Cisco-SIPGateway/IOS-12.x..CSeq:
> 
>   101 INVITE..Allow-Events: telephone-event..Content-Length: 
> 0....          
> 
> #
> 
> U 85.15.7.19:5060 -> 85.15.7.18:5060
> 
>   SIP/2.0 183 Session Progress..Via: SIP/2.0/UDP 
> 85.15.7.18;branch=0,SIP/2.0/
> 
>   UDP 192.168.11.102:5060;branch=z9hG4bK10145..From: 102 at shatel.ir 
> <sip:102 at s
> 
>   hatel.ir>;tag=analog-sip28734..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9A65
> 
>   C-1F0E..Date: Fri, 01 Mar 2002 00:10:32 GMT..Call-ID: 
> 32268 at 192.168.11.102.
> 
>   .Server: Cisco-SIPGateway/IOS-12.x..CSeq: 101 INVITE..Allow: INVITE, 
> OPTION
> 
>   S, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, 
> UPDATE,
> 
>   REGISTER..Allow-Events: telephone-event..Contact: 
> <sip:0098146 at 85.15.7.19:5
> 
>   060>..Record-Route: 
> <sip:85.15.7.18;ftag=analog-sip28734;lr=on>..Content-Di
> 
>   sposition: session;handling=required..Content-Type: 
> application/sdp..Conten
> 
>   t-Length: 252....v=0..o=CiscoSystemsSIP-GW-UserAgent 6865 4884 IN IP4 
> 85.15
> 
>   .7.19..s=SIP Call..c=IN IP4 85.15.7.19..t=0 0..m=audio 16400 RTP/AVP 
> 18 103
> 
>   ..c=IN IP4 85.15.7.19..a=rtpmap:18 G729/8000..a=fmtp:18 
> annexb=no..a=rtpmap
> 
>   :103 telephone-event/8000..a=fmtp:103 
> 0-15..                              
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   SIP/2.0 183 Session Progress..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;branch=z
> 
>   9hG4bK10145..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=analog-sip28734..T
> 
>   o: 0098146 <sip:0098146 at shatel.ir>;tag=9A65C-1F0E..Date: Fri, 01 Mar 
> 2002 0
> 
>   0:10:32 GMT..Call-ID: 32268 at 192.168.11.102..Server: 
> Cisco-SIPGateway/IOS-12
> 
>   .x..CSeq: 101 INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, 
> COME
> 
>   T, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER..Allow-Events: 
> telephon
> 
>   e-event..Contact: <sip:0098146 at 85.15.7.19:5060>..Record-Route: 
> <sip:85.15.7
> 
>   .18;ftag=analog-sip28734;lr=on>..Content-Disposition: 
> session;handling=requ
> 
>   ired..Content-Type: application/sdp..Content-Length: 
> 252....v=0..o=CiscoSys
> 
>   temsSIP-GW-UserAgent 6865 4884 IN IP4 85.15.7.19..s=SIP Call..c=IN IP4 
> 85.1
> 
>   5.7.19..t=0 0..m=audio 16400 RTP/AVP 18 103..c=IN IP4 
> 85.15.7.19..a=rtpmap:
> 
>   18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:103 
> telephone-event/8000..a=fmt
> 
>   p:103 0-15..                                                    
>            
> 
> #
> 
> U 85.15.7.19:5060 -> 85.15.7.18:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 85.15.7.18;branch=0,SIP/2.0/UDP 
> 192.168.11
> 
>   .102:5060;branch=z9hG4bK10145..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=
> 
>   analog-sip28734..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9A65C-1F0E..Date:
> 
>   Fri, 01 Mar 2002 00:10:32 GMT..Call-ID: 32268 at 192.168.11.102..Server: 
> Cisco
> 
>   -SIPGateway/IOS-12.x..CSeq: 101 INVITE..Allow: INVITE, OPTIONS, BYE, 
> CANCEL
> 
>   , ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, 
> REGISTER..Allo
> 
>   w-Events: telephone-event..Contact: 
> <sip:0098146 at 85.15.7.19:5060>..Record-R
> 
>   oute: <sip:85.15.7.18;ftag=analog-sip28734;lr=on>..Content-Type: 
> applicatio
> 
>   n/sdp..Content-Length: 252....v=0..o=CiscoSystemsSIP-GW-UserAgent 6865 
> 4884
> 
>    IN IP4 85.15.7.19..s=SIP Call..c=IN IP4 85.15.7.19..t=0 0..m=audio 
> 16400 R
> 
>   TP/AVP 18 103..c=IN IP4 85.15.7.19..a=rtpmap:18 G729/8000..a=fmtp:18 
> annexb
> 
>   =no..a=rtpmap:103 telephone-event/8000..a=fmtp:103 
> 0-15..                 
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;branch=z9hG4bK10145..F
> 
>   rom: 102 at shatel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..To: 
> 0098146 <si
> 
>   p:0098146 at shatel.ir>;tag=9A65C-1F0E..Date: Fri, 01 Mar 2002 00:10:32 
> GMT..C
> 
>   all-ID: 32268 at 192.168.11.102..Server: Cisco-SIPGateway/IOS-12.x..CSeq: 
> 101
> 
>   INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, 
> SUBS
> 
>   CRIBE, NOTIFY, INFO, UPDATE, REGISTER..Allow-Events: 
> telephone-event..Conta
> 
>   ct: <sip:0098146 at 85.15.7.19:5060>..Record-Route: 
> <sip:85.15.7.18;ftag=analo
> 
>   g-sip28734;lr=on>..Content-Type: application/sdp..Content-Length: 
> 252....v=
> 
>   0..o=CiscoSystemsSIP-GW-UserAgent 6865 4884 IN IP4 85.15.7.19..s=SIP 
> Call..
> 
>   c=IN IP4 85.15.7.19..t=0 0..m=audio 16400 RTP/AVP 18 103..c=IN IP4 
> 85.15.7.
> 
>   19..a=rtpmap:18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:103 
> telephone-even
> 
>   t/8000..a=fmtp:103 
> 0-15..                                                 
> 
> #
> 
> U 192.168.11.102:5060 -> 85.15.7.18:5060
> 
>   ACK sip:85.15.7.18;ftag=analog-sip28734;lr SIP/2.0..Via: SIP/2.0/UDP 
> 192.16
> 
>   8.11.102:5060;branch=z9hG4bK9072..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9
> 
>   A65C-1F0E..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=analog-sip28734..Cal
> 
>   l-ID: 32268 at 192.168.11.102..CSeq: 101 
> ACK..Route:<sip:0098146 at shatel.ir>..C
> 
>   ontact: <sip:102 at 192.168.11.102:5060>..Max-Forwards: 
> 70..Content-Length: 0.
> 
>   
> ...                                                                       
> 
> #
> 
> U 85.15.7.19:5060 -> 85.15.7.18:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 85.15.7.18;branch=0,SIP/2.0/UDP 
> 192.168.11
> 
>   .102:5060;branch=z9hG4bK10145..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=
> 
>   analog-sip28734..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9A65C-1F0E..Date:
> 
>   Fri, 01 Mar 2002 00:10:32 GMT..Call-ID: 32268 at 192.168.11.102..Server: 
> Cisco
> 
>   -SIPGateway/IOS-12.x..CSeq: 101 INVITE..Allow: INVITE, OPTIONS, BYE, 
> CANCEL
> 
>   , ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, 
> REGISTER..Allo
> 
>   w-Events: telephone-event..Contact: 
> <sip:0098146 at 85.15.7.19:5060>..Record-R
> 
>   oute: <sip:85.15.7.18;ftag=analog-sip28734;lr=on>..Content-Type: 
> applicatio
> 
>   n/sdp..Content-Length: 252....v=0..o=CiscoSystemsSIP-GW-UserAgent 6865 
> 4884
> 
>    IN IP4 85.15.7.19..s=SIP Call..c=IN IP4 85.15.7.19..t=0 0..m=audio 
> 16400 R
> 
>   TP/AVP 18 103..c=IN IP4 85.15.7.19..a=rtpmap:18 G729/8000..a=fmtp:18 
> annexb
> 
>   =no..a=rtpmap:103 telephone-event/8000..a=fmtp:103 
> 0-15..                 
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;branch=z9hG4bK10145..F
> 
>   rom: 102 at shatel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..To: 
> 0098146 <si
> 
>   p:0098146 at shatel.ir>;tag=9A65C-1F0E..Date: Fri, 01 Mar 2002 00:10:32 
> GMT..C
> 
>   all-ID: 32268 at 192.168.11.102..Server: Cisco-SIPGateway/IOS-12.x..CSeq: 
> 101
> 
>   INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, 
> SUBS
> 
>   CRIBE, NOTIFY, INFO, UPDATE, REGISTER..Allow-Events: 
> telephone-event..Conta
> 
>   ct: <sip:0098146 at 85.15.7.19:5060>..Record-Route: 
> <sip:85.15.7.18;ftag=analo
> 
>   g-sip28734;lr=on>..Content-Type: application/sdp..Content-Length: 
> 252....v=
> 
>   0..o=CiscoSystemsSIP-GW-UserAgent 6865 4884 IN IP4 85.15.7.19..s=SIP 
> Call..
> 
>   c=IN IP4 85.15.7.19..t=0 0..m=audio 16400 RTP/AVP 18 103..c=IN IP4 
> 85.15.7.
> 
>   19..a=rtpmap:18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:103 
> telephone-even
> 
>   t/8000..a=fmtp:103 
> 0-15..                                                 
> 
> #
> 
> U 192.168.11.102:5060 -> 85.15.7.18:5060
> 
>   ACK sip:85.15.7.18;ftag=analog-sip28734;lr SIP/2.0..Via: SIP/2.0/UDP 
> 192.16
> 
>   8.11.102:5060;branch=z9hG4bK10994..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=
> 
>   9A65C-1F0E..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=analog-sip28734..Ca
> 
>   ll-ID: 32268 at 192.168.11.102..CSeq: 101 
> ACK..Route:<sip:0098146 at shatel.ir>..
> 
>   Contact: <sip:102 at 192.168.11.102:5060>..Max-Forwards: 
> 70..Content-Length: 0
> 
>   
> ....                                                                      
> 
> #
> 
> U 85.15.7.19:5060 -> 85.15.7.18:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 85.15.7.18;branch=0,SIP/2.0/UDP 
> 192.168.11
> 
>   .102:5060;branch=z9hG4bK10145..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=
> 
>   analog-sip28734..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9A65C-1F0E..Date:
> 
>   Fri, 01 Mar 2002 00:10:32 GMT..Call-ID: 32268 at 192.168.11.102..Server: 
> Cisco
> 
>   -SIPGateway/IOS-12.x..CSeq: 101 INVITE..Allow: INVITE, OPTIONS, BYE, 
> CANCEL
> 
>   , ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, 
> REGISTER..Allo
> 
>   w-Events: telephone-event..Contact: 
> <sip:0098146 at 85.15.7.19:5060>..Record-R
> 
>   oute: <sip:85.15.7.18;ftag=analog-sip28734;lr=on>..Content-Type: 
> applicatio
> 
>   n/sdp..Content-Length: 252....v=0..o=CiscoSystemsSIP-GW-UserAgent 6865 
> 4884
> 
>    IN IP4 85.15.7.19..s=SIP Call..c=IN IP4 85.15.7.19..t=0 0..m=audio 
> 16400 R
> 
>   TP/AVP 18 103..c=IN IP4 85.15.7.19..a=rtpmap:18 G729/8000..a=fmtp:18 
> annexb
> 
>   =no..a=rtpmap:103 telephone-event/8000..a=fmtp:103 
> 0-15..                 
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;branch=z9hG4bK10145..F
> 
>   rom: 102 at shatel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..To: 
> 0098146 <si
> 
>   p:0098146 at shatel.ir>;tag=9A65C-1F0E..Date: Fri, 01 Mar 2002 00:10:32 
> GMT..C
> 
>   all-ID: 32268 at 192.168.11.102..Server: Cisco-SIPGateway/IOS-12.x..CSeq: 
> 101
> 
>   INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, 
> SUBS
> 
>   CRIBE, NOTIFY, INFO, UPDATE, REGISTER..Allow-Events: 
> telephone-event..Conta
> 
>   ct: <sip:0098146 at 85.15.7.19:5060>..Record-Route: 
> <sip:85.15.7.18;ftag=analo
> 
>   g-sip28734;lr=on>..Content-Type: application/sdp..Content-Length: 
> 252....v=
> 
>   0..o=CiscoSystemsSIP-GW-UserAgent 6865 4884 IN IP4 85.15.7.19..s=SIP 
> Call..
> 
>   c=IN IP4 85.15.7.19..t=0 0..m=audio 16400 RTP/AVP 18 103..c=IN IP4 
> 85.15.7.
> 
>   19..a=rtpmap:18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:103 
> telephone-even
> 
>   t/8000..a=fmtp:103 0-15..      
>                                             
> 
> #
> 
> U 192.168.11.102:5060 -> 85.15.7.18:5060
> 
>   ACK sip:85.15.7.18;ftag=analog-sip28734;lr SIP/2.0..Via: SIP/2.0/UDP 
> 192.16
> 
>   8.11.102:5060;branch=z9hG4bK24833..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=
> 
>   9A65C-1F0E..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=analog-sip28734..Ca
> 
>   ll-ID: 32268 at 192.168.11.102..CSeq: 101 
> ACK..Route:<sip:0098146 at shatel.ir>..
> 
>   Contact: <sip:102 at 192.168.11.102:5060>..Max-Forwards: 
> 70..Content-Length: 0
> 
>   ....                
>                                                        
> 
> #
> 
> U 85.15.7.19:5060 -> 85.15.7.18:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 85.15.7.18;branch=0,SIP/2.0/UDP 
> 192.168.11
> 
>   .102:5060;branch=z9hG4bK10145..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=
> 
>   analog-sip28734..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9A65C-1F0E..Date:
> 
>   Fri, 01 Mar 2002 00:10:32 GMT..Call-ID: 32268 at 192.168.11.102..Server: 
> Cisco
> 
>   -SIPGateway/IOS-12.x..CSeq: 101 INVITE..Allow: INVITE, OPTIONS, BYE, 
> CANCEL
> 
>   , ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, 
> REGISTER..Allo
> 
>   w-Events: telephone-event..Contact: 
> <sip:0098146 at 85.15.7.19:5060>..Record-R
> 
>   oute: <sip:85.15.7.18;ftag=analog-sip28734;lr=on>..Content-Type: 
> applicatio
> 
>   n/sdp..Content-Length: 252....v=0..o=CiscoSystemsSIP-GW-UserAgent 6865 
> 4884
> 
>    IN IP4 85.15.7.19..s=SIP Call..c=IN IP4 85.15.7.19..t=0 0..m=audio 
> 16400 R
> 
>   TP/AVP 18 103..c=IN IP4 85.15.7.19..a=rtpmap:18 G729/8000..a=fmtp:18 
> annexb
> 
>   =no..a=rtpmap:103 telephone-event/8000..a=fmtp:103 0-15..            
>       
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;branch=z9hG4bK10145..F
> 
>   rom: 102 at shatel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..To: 
> 0098146 <si
> 
>   p:0098146 at shatel.ir>;tag=9A65C-1F0E..Date: Fri, 01 Mar 2002 00:10:32 
> GMT..C
> 
>   all-ID: 32268 at 192.168.11.102..Server: Cisco-SIPGateway/IOS-12.x..CSeq: 
> 101
> 
>   INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, 
> SUBS
> 
>   CRIBE, NOTIFY, INFO, UPDATE, REGISTER..Allow-Events: 
> telephone-event..Conta
> 
>   ct: <sip:0098146 at 85.15.7.19:5060>..Record-Route: 
> <sip:85.15.7.18;ftag=analo
> 
>   g-sip28734;lr=on>..Content-Type: application/sdp..Content-Length: 
> 252....v=
> 
>   0..o=CiscoSystemsSIP-GW-UserAgent 6865 4884 IN IP4 85.15.7.19..s=SIP 
> Call..
> 
>   c=IN IP4 85.15.7.19..t=0 0..m=audio 16400 RTP/AVP 18 103..c=IN IP4 
> 85.15.7.
> 
>   19..a=rtpmap:18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:103 
> telephone-even
> 
>   t/8000..a=fmtp:103 
> 0-15..                                                 
> 
> #
> 
> U 192.168.11.102:5060 -> 85.15.7.18:5060
> 
>   ACK sip:85.15.7.18;ftag=analog-sip28734;lr SIP/2.0..Via: SIP/2.0/UDP 
> 192.16
> 
>   8.11.102:5060;branch=z9hG4bK1701..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9
> 
>   A65C-1F0E..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=analog-sip28734..Cal
> 
>   l-ID: 32268 at 192.168.11.102..CSeq: 101 
> ACK..Route:<sip:0098146 at shatel.ir>..C
> 
>   ontact: <sip:102 at 192.168.11.102:5060>..Max-Forwards: 
> 70..Content-Length: 0.
> 
>   
> ...                                                                       
> 
> #
> 
> U 85.15.7.19:5060 -> 85.15.7.18:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 85.15.7.18;branch=0,SIP/2.0/UDP 
> 192.168.11
> 
>   .102:5060;branch=z9hG4bK10145..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=
> 
>   analog-sip28734..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9A65C-1F0E..Date:
> 
>   Fri, 01 Mar 2002 00:10:32 GMT..Call-ID: 32268 at 192.168.11.102..Server: 
> Cisco
> 
>   -SIPGateway/IOS-12.x..CSeq: 101 INVITE..Allow: INVITE, OPTIONS, BYE, 
> CANCEL
> 
>   , ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, 
> REGISTER..Allo
> 
>   w-Events: telephone-event..Contact: 
> <sip:0098146 at 85.15.7.19:5060>..Record-R
> 
>   oute: <sip:85.15.7.18;ftag=analog-sip28734;lr=on>..Content-Type: 
> applicatio
> 
>   n/sdp..Content-Length: 252....v=0..o=CiscoSystemsSIP-GW-UserAgent 6865 
> 4884
> 
>    IN IP4 85.15.7.19..s=SIP Call..c=IN IP4 85.15.7.19..t=0 0..m=audio 
> 16400 R
> 
>   TP/AVP 18 103..c=IN IP4 85.15.7.19..a=rtpmap:18 G729/8000..a=fmtp:18 
> annexb
> 
>   =no..a=rtpmap:103 telephone-event/8000..a=fmtp:103 
> 0-15..                 
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;branch=z9hG4bK10145..F
> 
>   rom: 102 at shatel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..To: 
> 0098146 <si
> 
>   p:0098146 at shatel.ir>;tag=9A65C-1F0E..Date: Fri, 01 Mar 2002 00:10:32 
> GMT..C
> 
>   all-ID: 32268 at 192.168.11.102..Server: Cisco-SIPGateway/IOS-12.x..CSeq: 
> 101
> 
>   INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, 
> SUBS
> 
>   CRIBE, NOTIFY, INFO, UPDATE, REGISTER..Allow-Events: 
> telephone-event..Conta
> 
>   ct: <sip:0098146 at 85.15.7.19:5060>..Record-Route: 
> <sip:85.15.7.18;ftag=analo
> 
>   g-sip28734;lr=on>..Content-Type: application/sdp..Content-Length: 
> 252....v=
> 
>   0..o=CiscoSystemsSIP-GW-UserAgent 6865 4884 IN IP4 85.15.7.19..s=SIP 
> Call..
> 
>   c=IN IP4 85.15.7.19..t=0 0..m=audio 16400 RTP/AVP 18 103..c=IN IP4 
> 85.15.7.
> 
>   19..a=rtpmap:18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:103 
> telephone-even
> 
>   t/8000..a=fmtp:103 
> 0-15..                                                 
> 
> #
> 
> U 192.168.11.102:5060 -> 85.15.7.18:5060
> 
>   ACK sip:85.15.7.18;ftag=analog-sip28734;lr SIP/2.0..Via: SIP/2.0/UDP 
> 192.16
> 
>   8.11.102:5060;branch=z9hG4bK15365..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=
> 
>   9A65C-1F0E..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=analog-sip28734..Ca
> 
>   ll-ID: 32268 at 192.168.11.102..CSeq: 101 
> ACK..Route:<sip:0098146 at shatel.ir>..
> 
>   Contact: <sip:102 at 192.168.11.102:5060>..Max-Forwards: 
> 70..Content-Length: 0
> 
>   
> ....                                                                      
> 
> #
> 
> U 85.15.7.19:5060 -> 85.15.7.18:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 85.15.7.18;branch=0,SIP/2.0/UDP 
> 192.168.11
> 
>   .102:5060;branch=z9hG4bK10145..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=
> 
>   analog-sip28734..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9A65C-1F0E..Date:
> 
>   Fri, 01 Mar 2002 00:10:32 GMT..Call-ID: 32268 at 192.168.11.102..Server: 
> Cisco
> 
>   -SIPGateway/IOS-12.x..CSeq: 101 INVITE..Allow: INVITE, OPTIONS, BYE, 
> CANCEL
> 
>   , ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, 
> REGISTER..Allo
> 
>   w-Events: telephone-event..Contact: 
> <sip:0098146 at 85.15.7.19:5060>..Record-R
> 
>   oute: <sip:85.15.7.18;ftag=analog-sip28734;lr=on>..Content-Type: 
> applicatio
> 
>   n/sdp..Content-Length: 252....v=0..o=CiscoSystemsSIP-GW-UserAgent 6865 
> 4884
> 
>    IN IP4 85.15.7.19..s=SIP Call..c=IN IP4 85.15.7.19..t=0 0..m=audio 
> 16400 R
> 
>   TP/AVP 18 103..c=IN IP4 85.15.7.19..a=rtpmap:18 G729/8000..a=fmtp:18 
> annexb
> 
>   =no..a=rtpmap:103 telephone-event/8000..a=fmtp:103 
> 0-15..                 
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;branch=z9hG4bK10145..F
> 
>   rom: 102 at shatel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..To: 
> 0098146 <si
> 
>   p:0098146 at shatel.ir>;tag=9A65C-1F0E..Date: Fri, 01 Mar 2002 00:10:32 
> GMT..C
> 
>   all-ID: 32268 at 192.168.11.102..Server: Cisco-SIPGateway/IOS-12.x..CSeq: 
> 101
> 
>   INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, 
> SUBS
> 
>   CRIBE, NOTIFY, INFO, UPDATE, REGISTER..Allow-Events: 
> telephone-event..Conta
> 
>   ct: <sip:0098146 at 85.15.7.19:5060>..Record-Route: 
> <sip:85.15.7.18;ftag=analo
> 
>   g-sip28734;lr=on>..Content-Type: application/sdp..Content-Length: 
> 252....v=
> 
>   0..o=CiscoSystemsSIP-GW-UserAgent 6865 4884 IN IP4 85.15.7.19..s=SIP 
> Call..
> 
>   c=IN IP4 85.15.7.19..t=0 0..m=audio 16400 RTP/AVP 18 103..c=IN IP4 
> 85.15.7.
> 
>   19..a=rtpmap:18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:103 
> telephone-even
> 
>   t/8000..a=fmtp:103 
> 0-15..                                                 
> 
> #
> 
> U 192.168.11.102:5060 -> 85.15.7.18:5060
> 
>   ACK sip:85.15.7.18;ftag=analog-sip28734;lr SIP/2.0..Via: SIP/2.0/UDP 
> 192.16
> 
>   8.11.102:5060;branch=z9hG4bK22111..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=
> 
>   9A65C-1F0E..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=analog-sip28734..Ca
> 
>   ll-ID: 32268 at 192.168.11.102..CSeq: 101 
> ACK..Route:<sip:0098146 at shatel.ir>..
> 
>   Contact: <sip:102 at 192.168.11.102:5060>..Max-Forwards: 
> 70..Content-Length: 0
> 
>   
> ....                                                                      
> 
> #
> 
> U 85.15.7.19:5060 -> 85.15.7.18:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 85.15.7.18;branch=0,SIP/2.0/UDP 
> 192.168.11
> 
>   .102:5060;branch=z9hG4bK10145..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=
> 
>   analog-sip28734..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9A65C-1F0E..Date:
> 
>   Fri, 01 Mar 2002 00:10:32 GMT..Call-ID: 32268 at 192.168.11.102..Server: 
> Cisco
> 
>   -SIPGateway/IOS-12.x..CSeq: 101 INVITE..Allow: INVITE, OPTIONS, BYE, 
> CANCEL
> 
>   , ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, 
> REGISTER..Allo
> 
>   w-Events: telephone-event..Contact: 
> <sip:0098146 at 85.15.7.19:5060>..Record-R
> 
>   oute: <sip:85.15.7.18;ftag=analog-sip28734;lr=on>..Content-Type: 
> applicatio
> 
>   n/sdp..Content-Length: 252....v=0..o=CiscoSystemsSIP-GW-UserAgent 6865 
> 4884
> 
>    IN IP4 85.15.7.19..s=SIP Call..c=IN IP4 85.15.7.19..t=0 0..m=audio 
> 16400 R
> 
>   TP/AVP 18 103..c=IN IP4 85.15.7.19..a=rtpmap:18 G729/8000..a=fmtp:18 
> annexb
> 
>   =no..a=rtpmap:103 telephone-event/8000..a=fmtp:103 
> 0-15..                 
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;branch=z9hG4bK10145..F
> 
>   rom: 102 at shatel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..To: 
> 0098146 <si
> 
>   p:0098146 at shatel.ir>;tag=9A65C-1F0E..Date: Fri, 01 Mar 2002 00:10:32 
> GMT..C
> 
>   all-ID: 32268 at 192.168.11.102..Server: Cisco-SIPGateway/IOS-12.x..CSeq: 
> 101
> 
>   INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, 
> SUBS
> 
>   CRIBE, NOTIFY, INFO, UPDATE, REGISTER..Allow-Events: 
> telephone-event..Conta
> 
>   ct: <sip:0098146 at 85.15.7.19:5060>..Record-Route: 
> <sip:85.15.7.18;ftag=analo
> 
>   g-sip28734;lr=on>..Content-Type: application/sdp..Content-Length: 
> 252....v=
> 
>   0..o=CiscoSystemsSIP-GW-UserAgent 6865 4884 IN IP4 85.15.7.19..s=SIP 
> Call..
> 
>   c=IN IP4 85.15.7.19..t=0 0..m=audio 16400 RTP/AVP 18 103..c=IN IP4 
> 85.15.7.
> 
>   19..a=rtpmap:18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:103 
> telephone-even
> 
>   t/8000..a=fmtp:103 
> 0-15..                                                 
> 
> #
> 
> U 192.168.11.102:5060 -> 85.15.7.18:5060
> 
>   ACK sip:85.15.7.18;ftag=analog-sip28734;lr SIP/2.0..Via: SIP/2.0/UDP 
> 192.16
> 
>   8.11.102:5060;branch=z9hG4bK2061..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=9
> 
>   A65C-1F0E..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=analog-sip28734..Cal
> 
>   l-ID: 32268 at 192.168.11.102..CSeq: 101 
> ACK..Route:<sip:0098146 at shatel.ir>..C
> 
>   ontact: <sip:102 at 192.168.11.102:5060>..Max-Forwards: 
> 70..Content-Length: 0.
> 
>   
> ...                                                                       
> 
> #
> 
> U 85.15.7.19:55584 -> 85.15.7.18:5060
> 
>   BYE sip:102 at 192.168.11.102:5060 SIP/2.0..Via: SIP/2.0/UDP  
> 85.15.7.19:5060;
> 
>   branch=z9hG4bK11BD8..From: 0098146 
> <sip:0098146 at shatel.ir>;tag=9A65C-1F0E..
> 
>   To: 102 at shatel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..Date: Fri, 
> 01 Ma
> 
>   r 2002 00:10:32 GMT..Call-ID: 32268 at 192.168.11.102..User-Agent: 
> Cisco-SIPGa
> 
>   teway/IOS-12.x..Max-Forwards: 70..Route: 
> <sip:85.15.7.18;ftag=analog-sip287
> 
>   34;lr=on>..Timestamp: 1014941453..CSeq: 101 BYE..Content-Length: 
> 0....    
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   BYE sip:102 at 192.168.11.102:5060 SIP/2.0..Record-Route: 
> <sip:85.15.7.18;ftag
> 
>   =9A65C-1F0E;lr=on>..Via: SIP/2.0/UDP 
> 85.15.7.18;branch=z9hG4bK6b5f.4db3aed2
> 
>   .0..Via: SIP/2.0/UDP  85.15.7.19:5060;branch=z9hG4bK11BD8..From: 
> 0098146 <s
> 
>   ip:0098146 at shatel.ir>;tag=9A65C-1F0E..To: 102 at shatel.ir 
> <sip:102 at shatel.ir>
> 
>   ;tag=analog-sip28734..Date: Fri, 01 Mar 2002 00:10:32 GMT..Call-ID: 
> 32268 at 1
> 
>   92.168.11.102..User-Agent: Cisco-SIPGateway/IOS-12.x..Max-Forwards: 
> 69..Tim
> 
>   estamp: 1014941453..CSeq: 101 BYE..Content-Length: 0..P-hint: 
> rr-enforced..
> 
>   
> ..                                                                        
> 
> #
> 
> U 192.168.11.102:5060 -> 85.15.7.18:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 
> 85.15.7.18;branch=z9hG4bK6b5f.4db3aed2.0,S
> 
>   IP/2.0/UDP 85.15.7.19:5060;branch=z9hG4bK11BD8..To: 102 at shatel.ir 
> <sip:102@
> 
>   shatel.ir>;tag=analog-sip28734..From: 0098146 
> <sip:0098146 at shatel.ir>;tag=9
> 
>   A65C-1F0E..Call-ID: 32268 at 192.168.11.102..CSeq: 101 
> BYE..Record-Route:<sip:
> 
>   85.15.7.18;ftag=9A65C-1F0E;lr>..Content-Length: 
> 0....                     
> 
> #
> 
> U 85.15.7.18:5060 -> 85.15.7.19:5060
> 
>   SIP/2.0 200 OK..Via: SIP/2.0/UDP 
> 85.15.7.19:5060;branch=z9hG4bK11BD8..To: 1
> 
>   02 at shatel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..From: 0098146 
> <sip:00
> 
>   98146 at shatel.ir>;tag=9A65C-1F0E..Call-ID: 32268 at 192.168.11.102..CSeq: 
> 101 B
> 
>   YE..Record-Route:<sip:85.15.7.18;ftag=9A65C-1F0E;lr>..Content-Length: 
> 0....
> 
> #
> 
> U 85.15.7.18:5060 -> 192.168.11.102:5060
> 
>   SIP/2.0 408 Request Timeout..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;branch=z9
> 
>   hG4bK10145..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=3d932da19f2bc0936ad76a2
> 
>   d09ced739-edc2..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=analog-sip28734
> 
>   ..Call-ID: 32268 at 192.168.11.102..CSeq: 101 INVITE..Server: OpenSer 
> (1.0.1 (
> 
>   i386/linux))..Content-Length: 0..Warning: 392 85.15.7.18:5060 "Noisy 
> feedba
> 
>   ck tells:  pid=6517 req_src_ip=192.168.11.102 req_src_port=5060 
> in_uri=sip:
> 
>   0098146 at shatel.ir out_uri=sip:0098146 at shatel.ir 
> via_cnt==0"....           
> 
> #
> 
> U 192.168.11.102:5060 -> 85.15.7.18:5060
> 
>   ACK sip:0098146 at shatel.ir SIP/2.0..Via: SIP/2.0/UDP 
> 192.168.11.102:5060;bra
> 
>   nch=z9hG4bK10145..To: 0098146 
> <sip:0098146 at shatel.ir>;tag=3d932da19f2bc0936
> 
>   ad76a2d09ced739-edc2..From: 102 at shatel.ir 
> <sip:102 at shatel.ir>;tag=analog-si
> 
>   p28734..Call-ID: 32268 at 192.168.11.102..CSeq: 101 ACK..Content-Length: 
> 0....
> 
> #
> 
> U 85.15.7.18:5060 -> 85.15.7.19:5060
> 
>   ACK sip:0098146 at shatel.ir SIP/2.0..Max-Forwards: 10..Record-Route: 
> <sip:85.
> 
>   15.7.18;ftag=analog-sip28734;lr=on>..Via: SIP/2.0/UDP 
> 85.15.7.18;branch=0..
> 
>   Via: SIP/2.0/UDP 192.168.11.102:5060;branch=z9hG4bK10145..To: 0098146 
> <sip:
> 
>   0098146 at shatel.ir>;tag=3d932da19f2bc0936ad76a2d09ced739-edc2..From: 
> 102 at sha
> 
>   tel.ir <sip:102 at shatel.ir>;tag=analog-sip28734..Call-ID: 
> 32268 at 192.168.11.1
> 
>   02..CSeq: 101 ACK..Content-Length: 
> 0....                                  
> 
> exit
> 





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