The only issue I can see is in the formation of FROM header in ACK request. See if this header is exactly equal to that of INVITE. Everything else seems to be fine.
Thanks Gaurav Khare ----- Original Message ----- From: "Vivek Batra" <[email protected]> To: <[email protected]> Sent: Tuesday, January 22, 2013 9:40 AM Subject: [Sip-implementors] Keep retransmitting 486 Busy... > Hi folks, > > > > I am facing issue with one specific service provider where UAS is busy and > hence sends 486 Busy message, and also get ACK for 486 Busy but UAS > somehow > couldn't match the ACK transaction and keep retransmitting 486 Busy till > timeout. Can you have a look at ACK message below and suggest what is > going > wrong here. > > > > Best Regards, > > Vivek Batra > > > > > > INVITE sip:[email protected]:5060 SIP/2.0 > > From: "Anonymous" > <sip:[email protected]:5060>;user=phone;tag=ccid-176140755-358439439 > > Contact: sip:[email protected]:5060 > > Via: SIP/2.0/UDP 69.132.136.5:5060;branch=z9hG4bK-358439439-1 > > To: <sip:[email protected]:5060> > > Call-ID: [email protected] > > CSeq: 1 INVITE > > > > SIP/2.0 486 Busy Here > > From: > "Anonymous"<sip:[email protected]:5060>;tag=ccid-176140755-358439439 > ;user=phone > > To: > <sip:[email protected]:5060>;tag=5f9a28-8801a8c0-13c4-50ef98ff-4aa1 > 46a5-50ef98ff > > Call-ID: [email protected] > > CSeq: 1 INVITE > > Via: SIP/2.0/UDP > 69.132.136.5:5060;received=69.132.196.11;branch=z9hG4bK-358439439-1 > > > > ACK sip:[email protected]:5060 SIP/2.0 > > Via: SIP/2.0/UDP 69.132.196.11:5060;branch=z9hG4bK-358439439-1 > > From: > "Anonymous"<sip:[email protected]:5060>;tag=ccid-176140755-358439439 > ;user=phone > > To: > <sip:[email protected]:5060>;tag=5f9a28-8801a8c0-13c4-50ef98ff-4aa1 > 46a5-50ef98ff > > Call-ID: [email protected] > > CSeq: 1 ACK > > > > SIP/2.0 486 Busy Here (keep retransmitting 486 Busy).. > > > > Best Regards, > > Vivek Batra > > > > > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > ________________________________ DISCLAIMER: The information in this message is confidential and may be legally privileged. It is intended solely for the addressee. Access to this message by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, or distribution of the message, or any action or omission taken by you in reliance on it, is prohibited and may be unlawful. Please immediately contact the sender if you have received this message in error. Further, this e-mail may contain viruses and all reasonable precaution to minimize the risk arising there from is taken by OnMobile. OnMobile is not liable for any damage sustained by you as a result of any virus in this e-mail. All applicable virus checks should be carried out by you before opening this e-mail or any attachment thereto. Thank you - OnMobile Global Limited. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
