There is another standard i.e. RFC 4028. it elicits the requirements for implementing "SIP Session Timer", which is very similar to registration expires. according to that standard the recommended refresh interval should be half of Session Expires interval.
Cheers! Nitin Arora Samsung India Software Centre, Noida. On 4/7/08, 이성우 <[EMAIL PROTECTED]> wrote: > > Dear, > > As shown in title, my question is when UAC has to re-send REGISTER message > to refresh its binding in REGISTRAR? Let's say that UAC has received 200 OK > meessage whose expire parameter value in Contact header is 3600. I think I > have read somewhere in RFC which says subsequent REGISTER message should(?) > be send at the time when half of the expire value in 200 OK is elapsed. > Unfortunately I don't know exactly where I have read this, and all I find > now is that UAC is supposed to send REGISTER message simply before expire > interval elapses (RFC3261 10.2.4). Isn't there anybody who can clearify > this? > > Thanks. > > Lee, Sungwoo > > Mobile: 82-10-3015-4329 > Telecommunication System Div. > Samsung Electronics Co., LTD. > > IMPOSSIBLE itself says I M POSSIBLE > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
