Harbansu, 'Min-SE' header defined in view of avoiding *too frequent refreshes*, which might overload the adjacent proxies.
Can you please share the scenario where you might need this lower maximum refresh rate. One use case, I can think of is in the case of long duration calls (may be greater than ONE hour). I have observed this scenario in the case of Nortel switches, where soon after one hour call used to hung up. In this case you might need to refresh the call to continue beyond one hour. Hope this helps... Thanks, Nataraju A B On Wed, Mar 7, 2012 at 7:33 PM, harbhanu sahai <[email protected]>wrote: > Hi, > Proxy receives a INV request having Session-Expires value as 3600 and MinSE > of 2800. > > If proxy configuration requires that the session expiration to be 1800, > what should be the handling of request at its end? > > UAC ------------------ > PXY > SE:3600 MinSE:1800 > MinSE:2800 > > > Should Proxy reject the request with a 5xx response or there is any other > option. > > AFAIK RFC-4028 defines that proxy can reject with 422 to define a *higher > minimum* for session timer but wondering why there is no provision to > define a *lower maximum*. Does it never form a valid use-case ? > > Thanks! > > Regards, > harbhanu > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > -- Thanks, Nataraju A.B. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
