Hi Mark, of course we could specify how to indicate the retention time to the agent.
But again the question is if we really need it, because CC has to be requested as soon as possible anyway. If you wait much longer than 20 to 30 seconds, the more probable it becomes that someone else calls and activates CC to the callee. So from my point of view the definition of a retention timer which is known to agent and monitor will be sufficient. BR, Martin > -----Ursprüngliche Nachricht----- > Von: Mark Michelson [mailto:[email protected]] > Gesendet: Donnerstag, 6. August 2009 18:02 > An: Hülsemann, Martin > Cc: [email protected] > Betreff: Re: AW: [BLISS] draft-ietf-bliss-call-completion-04 > Recommendation for retention time? > > [email protected] wrote: > > Hi Mark, > > > > until now such a retention indication was not discussed. > It's clear that there will be a temporal relationship between > failed call and CC request, but the question is if we really > have to indicate this via SIP? > > > > If we say that about 20 s should be enough to activate CC, > incl. time for signalling and user interaction, the > definition of a 20 s retention timer at the CC agent should > be sufficient to prevent the expiry of the possibility for CC. > > > > > > BR, Martin > > > > Thank you for the response, Martin, and sorry for not > replying sooner, myself. > > I'm not too concerned about what a reasonable default expiry > for the CC offer should be. What I am concerned about is > whether this may be expressed in some way. For instance, > could an expires= parameter be added to the Call-Info header > sent by the CC monitor in cases where call completion > services are available? > > Mark Michelson > _______________________________________________ BLISS mailing list [email protected] https://www.ietf.org/mailman/listinfo/bliss
