Re: [Sip-implementors] Expires header. Why not mandatory for DialogForming INVITE

2010-07-11 Thread sunilkumar.verma
Hi, Its not mandatory as it may flood the network with Re-invites or Updates even in valid call scenarios which are running for quite a long time. I could see that as the main reason. Also if we are using TCP as transport we can build TCP based "Keep alive" mechanism. Session timers are mainly

Re: [Sip-implementors] Expires header. Why not mandatory for Dialog Forming INVITE

2010-07-11 Thread Sumit Jindal
Hi Ranganathan, Just think of some good value you can put in this header when the other side is an IVR, would that value work for normal calls also. The sip stack I worked on are using some kind of timer C for UACs also. Regards, Sumit Jindal On Sun, Jul 11, 2010 at 1:57 AM, M. Ranganathan wrot