Subject: RE: [Megaco] Properties in Base Root Package!!

From: "Kevin Boyle" <[email-masked]>
Date: Thu, 2 Mar 2006 12:49:03 -0500

I have to agree with Christian: every MG will have a limit to the number
of contexts.  There has to be data associated with the context, like the
topology, the priority and emergency status and the list of terminations
in the context.  These things take up space in the datastore.
Therefore, it is *impossible* that an MG could have an infinite number
of contexts.

I believe that if the MG can, in fact, support a number of contexts
equal to the address range, that it return the maximum value of the
address range.  For H.248, this is 0xFFFFFFFD or 4294967293.

Kevin 

-----Original Message-----
From: Christian Groves [mailto:[email-masked]] 
Sent: Thursday, March 02, 2006 1:20 AM
To: B Venkat S.R Swamy
Cc: [email-masked]
Subject: Re: [Megaco] Properties in Base Root Package!!

Hello,

I think you'll find that there probably wasn't alot of thought behind
specifying 'double' and its been hanging around pre-H.248.1v1. There is
no such thing as an "infinite" number of contexts support. Anyone that
can design a MG that can support an infinite number of contexts will be
a rich person!!! However I would be weary buying a MG from someone who
says this. Needless to say if they design it H.248 won't be able to
address any more terminations than 0xFFFFFFFD.

Regards, Christian

B Venkat S.R Swamy wrote:

> Hi
>
> Although you are right that maximum theoretical number of simultaneous

> contexts any gateway can handle is 0xFFFFFFFD, but BaseRoot package 
> allows MG or MGC to specify maximum number to simultaneous context to 
> be 8byte number(double).
> I believe it was intentionally specified as double although the 
> Context ID is only 4byte Unsigned Integer.
>
> Therefore even specifying 0xFFFFFFFE or 0xFFFFFFFF would mean a 
> infinite number of contexts support at MG end.
>
> regards
> B Venkat S.R Swamy
> Senior Technical Leader
> Flextronics Software Systems
> Phone: +91-124- 4176213
> Fax: +91-124-4300247
> web: www.flextronicssoftware.com
> Inactive hide details for Christian Groves 
> <[email-masked]>Christian Groves 
> <[email-masked]>
>
>
>                         *Christian Groves
>                         <[email-masked]>*
>
>                         03/02/2006 06:25 AM
>
> 	
>
> To
> 	
> Mudit Gupta <[email-masked]>
>
> cc
> 	
> B Venkat S.R Swamy/HSS@HSS, [email-masked]
>
> Subject
> 	
> Re: [Megaco] Properties in Base Root Package!!
>
> 	
>
>
> Hello Mudit,
>
> You have a limit on how you address Contexts e.g.
>
> ;The values 0x0, 0xFFFFFFFE and 0xFFFFFFFF are reserved.
> ;'-' is used for NULL context. '*' is ALL. '$' is CHOOSE.
> ContextID = (UINT32 / "*" / "-" / "$")
>
> So I would suggest the maximum theoretical number of contexts any 
> gateway could handle is 0xFFFFFFFD.
>
> Regards, Christian
>
> Mudit Gupta wrote:
>
> > Hi
> >
> > Suppose, if I don't want to put any limit on the max number of 
> > contexts, of course there will be system limitation always, but I 
> > don't want to force it. As, I don't have any limit on number of 
> > contexts then the MG should also reply with the same. As the zero
> > ("0") is not being used, we can use it for this purpose as there are

> > lots of instances where NULL/ZERO is used to describe infinite.
> >
> > Regards,
> >
> > Mudit
> >
> > --------------------------------------------------------------------
> > ----
> >
> > *From:* B Venkat S.R Swamy [mailto:[email-masked]]
> > *Sent:* Wednesday, March 01, 2006 3:08 PM
> > *To:* Mudit Gupta
> > *Cc:* [email-masked]
> > *Subject:* Re: [Megaco] Properties in Base Root Package!!
> >
> > Hi
> >
> > Any real systems will always be bounded by some resource contraints 
> > and IMO MG should return some finite large value(limited to Double 
> > for "MaxNumberOfContexts" and integer for
> > "MaxTerminationsPerContext") as configured either by MGC or locally 
> > provisioned.
> >
> >
> > regards
> > B Venkat S.R Swamy
> > Senior Technical Leader
> > Flextronics Software Systems
> > Phone: +91-124- 4176213
> > Fax: +91-124-4300247
> > web: www.flextronicssoftware.com
> > Inactive hide details for "Mudit Gupta" <[email-masked]>"Mudit

> > Gupta" <[email-masked]>
> >
> > *"Mudit Gupta" <[email-masked]>*
> >
> > 03/01/2006 01:23 PM
> >
> >
> >
> > To
> >
> >
> >
> >
> > <[email-masked]>
> >
> > cc
> >
> >
> >
> > Subject
> >
> >
> >
> >
> > [Megaco] Properties in Base Root Package!!
> >
> >
> >
> >
> > Hi All
> >
> > My query is about the properties defined in base root package. There

> > are total 8 properties, out of these there are two properties called

> > "MaxNumberOfContexts" and "MaxTerminationsPerContext". My query is 
> > if I don't want to put any limit on these values then what values 
> > should be returned by the MG if the MGC/CA does audit on the ROOT 
> > termination for Media descriptor.
> >
> > I think value "0" (zero) can be returned as if any of these 
> > properties has zero value literally then this MG is of no use 
> > (what's the use of MG supporting zero contexts?) and that's why we 
> > can interpret zero value as no-limit.
> >
> > Please, provide me your feedbacks and what you think should be 
> > returned in this case or if you think that there should be limit 
> > always then also reply me back.
> >
> > Regards,
> > Mudit _______________________________________________
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> >
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