Re: [Sip-implementors] Fwd: ue-addr parameter in SIP Contact header

2019-10-07 Thread Paul Kyzivat
Ranjit, Based on the further detail you provide below I conclude that this is most likely a question about 3GPP IMS behavior and specifications. I suggest that you take this to a 3GPP forum. (I don't know what that would be. Hopefully one of the people here who are involved in 3GPP can make

Re: [Sip-implementors] Fwd: ue-addr parameter in SIP Contact header

2019-10-07 Thread Christer Holmberg
to:schoenin...@gmail.com>, "mailto:Sip-implementors@lists.cs.columbia.edu; <mailto:Sip-implementors@lists.cs.columbia.edu>, Christer Holmberg <mailto:christer.holmb...@ericsson.com>, "mailto:pkyzi...@alum.mit.edu; <mailto:pkyzi...@alum.mit.edu> Subject: Re: [Sip-implemen

Re: [Sip-implementors] Fwd: ue-addr parameter in SIP Contact header

2019-10-07 Thread Christer Holmberg
a.edu" , Christer Holmberg , "pkyzi...@alum.mit.edu" Subject: Re: [Sip-implementors] Fwd: ue-addr parameter in SIP Contact header Hi Philip Yes, I agree that connection and relation to UE are maintained by P-CSCF and S-CSCF does not need them. But in some call scenarios,

Re: [Sip-implementors] Fwd: ue-addr parameter in SIP Contact header

2019-10-07 Thread Ranjit Avasarala
; > *From: *Ranjit Avasarala > *Date: *Monday, 7 October 2019 at 6.42 > *To: *Philipp Schöning , " > Sip-implementors@lists.cs.columbia.edu" < > Sip-implementors@lists.cs.columbia.edu>, Christer Holmberg < > christer.holmb...@ericsson.com>, "pkyzi.

Re: [Sip-implementors] Fwd: ue-addr parameter in SIP Contact header

2019-10-06 Thread Ranjit Avasarala
Hi Philip Yes, I agree that connection and relation to UE are maintained by P-CSCF and S-CSCF does not need them. But in some call scenarios, the S-CSCF connects to subsequent network elements like MRF and it is supposed to pass the "ue-addr" parameter it receives from P-CSCF (in Contact header)

Re: [Sip-implementors] Fwd: ue-addr parameter in SIP Contact header

2019-10-06 Thread Philipp Schöning
Hi Ranjit, I can't answer the question, but I have another question: Isn't the connection and relation to the UE maintained by the P-CSCF? >From my perspective the S-CSCF does not have any relation to the UE. BR Philipp ___ Sip-implementors mailing

[Sip-implementors] Fwd: ue-addr parameter in SIP Contact header

2019-10-03 Thread Ranjit Avasarala
Hello SIP experts I have a scenario where, the S-CSCF is ignoring ue-addr=x.y.z.a;transport=udp parameter in INVITE request. Ignoring in the sense that it is not adding the "ue-addr" parameter in the INVITE it forwards to next hop but in another scenario, when the "ue-addr" is of the format