Re: [Sip-implementors] Query

2011-01-19 Thread Iñaki Baz Castillo
2011/1/20 Kondaveeti Seshagiri : > If proxy not retransmit non-2XX final responses to a TCP UAC, then > What is difference between transport over UDP and TCP? non 2XX responses are hop by hop, so if a SIP UAS or proxy replies a non-2XX via TCP it doesn't need to send retransmissions as it *already

Re: [Sip-implementors] Query on comparing VIA Header Sent-by params

2011-01-19 Thread Iñaki Baz Castillo
2011/1/20 prashanth.me : > As per the RFC 3261 in section 18.1.2, On receiving a Response must > check the Sent-By field of VIA header to that of configured in Request. > Are the below sent-by params of VIA header in Request and Response are > same? Should UA discard the response? > > Request conta

[Sip-implementors] Query on comparing VIA Header Sent-by params

2011-01-19 Thread prashanth.me
Hi, As per the RFC 3261 in section 18.1.2, On receiving a Response must check the Sent-By field of VIA header to that of configured in Request. Are the below sent-by params of VIA header in Request and Response are same? Should UA discard the response? Request contains sent-by IP and port: Via:

Re: [Sip-implementors] SIP over TCP

2011-01-19 Thread Polystar T & M
No not in this case. The B side of the scenario is a SIPp test script so I pretty much decides myself what to do there. The problem is that SIPp will complain and exit the scenario when signaling comes on the second TCP connection // Andreas -Original Message- From: santosh.kalsang...@w

Re: [Sip-implementors] Query

2011-01-19 Thread Kondaveeti Seshagiri
I have doubt in this case. If proxy not retransmit non-2XX final responses to a TCP UAC, then What is difference between transport over UDP and TCP? I think TCP i.e. at Transport layer sends data reliably (Retransmits if not received Acknowledgement for TCP packet) irrespective of Application l

[Sip-implementors] Query on SDP hold

2011-01-19 Thread Chandan Kumar
Hi,    As per O/A model rfc 3264 re-invite offer with  SDP containing connection IP 0.0.0.0 is  not recommended . Since UA neither send any RTP/RTCP as the destination media address is not known nor receive any RTP/RTCP from 0.0.0.0.   we are facing interop issue with B2BUA  when a re-Invite  off

Re: [Sip-implementors] Query of receiving re-INVITE without offer

2011-01-19 Thread Paul Kyzivat
On 1/19/2011 4:13 AM, Sunil wrote: > Hi All, > > Please clarify how to handle the below requirement of rfc 3261in case of > 3 scenarios: The UAS MUST ensure that the session description overlaps > with its previous session description in media formats, transports, or > other parameters that requi

[Sip-implementors] CfP: IPTComm 2011

2011-01-19 Thread Volker Hilt
5th Conference on Principles, Systems and Applications of IP Telecommunications (IPTComm 2011) http://www.iptcomm.org August 1-2, 2011 Illinois Institute of Technology

Re: [Sip-implementors] SIP over TCP

2011-01-19 Thread santosh.kalsangrah
Hi Andreas, Is it 481 (call leg/transaction does not exist) response for BYE? I happen to see same behavior but in different scenario. Thanks, Santosh -Original Message- From: sip-implementors-boun...@lists.cs.columbia.edu [mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Beha

[Sip-implementors] SIP over TCP

2011-01-19 Thread Polystar T & M
Hi, I've just recently started to look at a scenario when SIP is sent over TCP (not UDP as I'm used to have). I see a behavior that I'm not really sure it correct: It's a very basic SIP call UAA -> UAB 1. UAA sends INVITE to UAB 2. UAB answers with 180 and 200 OK 3. UAA send

[Sip-implementors] Query of receiving re-INVITE without offer

2011-01-19 Thread Sunil
Hi All, Please clarify how to handle the below requirement of rfc 3261in case of 3 scenarios: The UAS MUST ensure that the session description overlaps with its previous session description in media formats, transports, or other parameters that require support from the peer. 1. User A and User

Re: [Sip-implementors] CORRECTION - SIP TCP Re Invite withdifferent TCP Source Port

2011-01-19 Thread Kamalakanta Palei (kpalei)
Hi Albert In general, - responses to requests (received on TCP) should be sent to source port. - responses to requests (received on UDP) should be sent to port present in Via. However there are number of parameters those can affect your destination transport params such as maddr