Re: Context Id

Hi Raphael,

Thanks for your response and excellent explanation. I understand context better now. So if I am an external entity monitoring MGW and would like to know about a subscribers call/session details, then a user might have multiple context ids which must be analyzed right? So conceptually a  context is created for a user per transaction initiated by the user with diff remote physical terminations.

Thanks and regards
Geetha 

--- On Tue, 5/12/09, Raphael Tryster <[email protected]> wrote:

> From: Raphael Tryster <[email protected]>
> Subject: RE: [Megaco] Context Id
> To: "Priya Krishnan" <[email protected]>, [email protected]
> Date: Tuesday, May 12, 2009, 10:42 PM
> Hi Priya,
> 
> A termination (representing a user) can only be in one
> context at a
> time.  Typically, in a 3-party scenario, a termination
> will move between
> contexts.  Remember that when the terminations are in
> different
> gateways, the MGC will create the required contexts on each
> MG.  For
> example, suppose A, B and C are physical terminations in
> different
> gateways, and A can bounce back and forth between B and C
> by pressing
> flash.  The MGC would typically create 2 contexts on
> A's gateway, where
> each context contains an ephemeral termination, one of them
> with a
> remote descriptor pointing to B, and the other to C. 
> Each time A
> presses flash, the MGC will MOVE A's physical termination
> out of one
> context and into another.  At the same time, B's and
> C's physical
> terminations are each in their own contexts on their
> respective MGs,
> where each context also contains an ephemeral termination
> whose remote
> descriptor points to A.  As A bounces between talking
> to B and C, the
> MGC will control who hears whom by changing the Mode of
> each of the
> terminations.
> 
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]
> On Behalf
> Of Priya Krishnan
> Sent: Wednesday, 13 May 2009 8:03 AM
> To: [email protected]
> Subject: [Megaco] Context Id
> 
> 
> Hi All,
> 
> As a beginner in MeGaco I have one question on context ID.
> The context
> ID is not quite clear to me. Hope to get response. 
> 
> A user  can have multiple contexts right ?
> Each context indicates a particular set of related
> terminations.  For
> example, if a user is having a 3 way conf call, there are 3
> terminations
> in a context with an ID. if that user is on call waiting on
> the other
> line , he is in a different context also at the same time.
> So there are
> 2 context ids for this user at this point in time. A
> combination of
> context id, termination ID+ other info like user ID can
> recognize the
> user accurately.
> 
> Is my understanding right? Please clarify.
> 
> Thanks
> Priya
> 
> 
>       
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