Re: What is a "session"?

[Erik Nordmark <Erik.Nordmark@eng.sun.com>]

> Erik,
> 
> I think there is a fairly clear notion of what a session is for
> multimedia data in which SIP is used to make the initial connection
> (after all, SIP is the Session Initiation Protocol). SIP defines
> the INVITE to start a session and BYE to terminate it. The state
> involved in maintaining the session is identified in the SDP message
> within the INVITE 

A agree that SIP defines what a session is in the SIP context.
But the document doesn't talk about "SIP sessions" but an
general notion of "session" which is confusing at best.


Has there been any study on what it would take to, in general,
move SIP sessions from one device to another device e.g. from
a phone to a laptop? (independent of the actual session/application)
Do we know that this is feasible in general, or does it actually
require application specific awareness of SIP session mobility to
make it work?

  Erik