[Users] Cisco Gateway Disconnects the call

Klaus Darilion klaus.mailinglists at pernau.at
Wed Jul 12 09:55:27 CEST 2006


Hi Hamid!

Please send also the 200 OK received be the SIP client - to verify if 
the ACK is correct. Further, please use ngrep as the SIP dumps are more 
readable:

ngrep -W byline port 5060

regards
klaus


Hamid Ali Asgari wrote:
> I don't guess it is bad ACK routing, since the ACK routing works fine if the
> UA is Windows Messenger.
> 
> But it may be a bad formated ACK (not sure). Bellow are the ACKS from both
> UAs, one difference is in the RequestLine; the one form Wmessenger has
> "lr=on" but the other one from the my UA sets only "lr". Alothough I am not
> sure if this would be the case.
> 
> Hope SIP gurus and openser pros could shine a light on this.
> 
> Thanks,
> Hamid
> 
> ACK from Windows Messenger
> --------------------------
> Session Initiation Protocol
> RequestLine: ACK sip:85.15.7.18;ftag=27ccb8cd605f40e7bb41568eaec3a335;lr=on
> SIP/2.0
> 	Method: ACK
> 	Resent Packet: False
> Message Header
> 	Via: SIP/2.0/UDP 192.168.11.136:9560
> 	MaxForwards: 70
> 	From: "103 at shatel.ir" <sip:103 at shatel.ir>;
> tag=27ccb8cd605f40e7bb41568eaec3a335; epid=9998c5a301
> 	  SIP Display info: "103 at shatel.ir"
> 	  SIP from address: sip:103 at shatel.ir
> 	  SIP tag: 27ccb8cd605f40e7bb41568eaec3a335
> 	To: <sip:0098146 at shatel.ir>;tag=22FA78219D
> 	  SIP to address: sip:0098146 at shatel.ir
> 	  SIP tag: 22FA78219D
> 	CallID: d253f8dd0d6546819347b0ba28986e24
> 	CSeq: 1 ACK
> 	Route: <sip:0098146 at 85.15.7.19:5060>
> 	UserAgent: RTC/1.3
> 	ContentLength: 0
> 
> 
> ACK from my UA
> ---------------------------------
> Session Initiation Protocol
> RequestLine: ACK sip:85.15.7.18;ftag=analogsip28734;lr SIP/2.0
> 	Method: ACK
> 	Resent Packet: False
> Message Header
> 	Via: SIP/2.0/UDP 192.168.11.102:5060;branch=z9hG4bK9072
> 	To: 0098146 <sip:0098146 at shatel.ir>;tag=9A65C1F0E
> 	  SIP Display info: 0098146
> 	  SIP to address: sip:0098146 at shatel.ir
> 	  SIP tag: 9A65C1F0E
> 	From: 102 at shatel.ir <sip:102 at shatel.ir>;tag=analogsip28734
> 	  SIP Display info: 102 at shatel.ir
> 	  SIP from address: sip:102 at shatel.ir
> 	  SIP tag: analogsip28734
> 	CallID: 32268 at 192.168.11.102
> 	CSeq: 101 ACK
> 	Route:<sip:0098146 at shatel.ir>
> 	Contact: <sip:102 at 192.168.11.102:5060>
> 	  Contact Binding: <sip:102 at 192.168.11.102:5060>
> 		URI: <sip:102 at 192.168.11.102:5060>
> 		  SIP contact address: sip:102 at 192.168.11.102:5060
> 	MaxForwards: 70
> 	ContentLength: 0
> 
> 
> 
> 





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