Re: [Sip-implementors] Why is a stateless proxy needed?

2011-02-10 Thread Parthasarathi R (partr)
I agree with Dale that SIP was designed in internet way wherein endpoints has to be intelligent. But the legacy telecom system believes in the network as intelligent with full of dump end-points from PSTN days, this leads to the building of SIP network full of B2BUA/stateful proxy. IMS architectu

Re: [Sip-implementors] Telephony DTMF adaptation

2011-01-30 Thread Parthasarathi R (partr)
Hi Mikko, AFAIK, RFC 2833/4733 is supported by lot of SIP devices and works well for End-to-End SIP scenario. Even though RFC 4730 exists, I heard that only few implementation supports KPML SUB/NOT mechanism. As you expect, INFO will not be accepted in IETF but 3GPP IMS spec supports it (ove

Re: [Sip-implementors] Multiple early media sessions within a samedialog

2011-01-06 Thread Parthasarathi R (partr)
Hi, Please read inline Thanks Partha -Original Message- From: sip-implementors-boun...@lists.cs.columbia.edu [mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Nataraju A.B Sent: Thursday, January 06, 2011 10:40 PM To: Harlin Dyvia Helina Sathianathan Cc: sip-implement

Re: [Sip-implementors] Invite Client Transaction after it gets 100trying

2010-09-25 Thread Parthasarathi R (partr)
Hi Vivek, It is based on UAC application. UAC application shall start the timer and move the transaction to "terminated" state when the timer expires. Regards Partha From: sip-implementors-boun...@lists.cs.columbia.edu on behalf of Vivek Singla Sent: Sat 9/