[cisco-voip] Part 2: Conferencing Codecs Across WAN

[Craig Staffin]

Jason,

The easiest way to think of it is this.

What phone or Device is asking for the resource is the MRGL it will use.

So if a phone in site A conferences in 4 phones at site B the resources on
site A will be used even though more phones are at Site B than A.

Does that make sense?

Craig Staffin
CCIE# 25802

On Tue, Jan 19, 2010 at 5:56 PM, Rhodium <rhodium_uk at yahoo.co.uk> wrote:

> Hi All,
>
> Part 2 of the saga of the conferencing... :)
>
> Apologies if I am overthinking this but I had a client ask me this question
> and couldn't fathom an answer:
>
> Same scenario as before but this time, both routers (A & B) have PVDMs for
> conferencing. Phones in A uses router A's resources as primary and phones in
> B use router's B resources as primary.
>
> Phones A1 & A2 --router A ---(WAN)--- router B-- Phones B1 and B2
>
> Now if we have an established conference call initiated by a user in site B
> (phone B1) with one user in site A (A1) and another user in site B (B2),
> giving rise to A1, B1 and B2 in conference the PVDMs in router B will be
> used to host the conference.
>
> Now what happens if phone A1 in site A tries to ad hoc conference another
> user, therefore invoking his local router's conferencing resources, will we
> have the following:
>
> 1.) B1, B2 and A1 use router B's conferencing resources.
> 2.) A1 again and A2 use router A's conferencing resources.
> 3.) RTP stream from each conferencing router to each other, so router A's
> conferencing resource will have an RTP stream to router B's conferencing
> resource.
>
> Did all that make sense? Not sure if I confused myself and others along
> with me but if I am not clear, please ask me to clarify.
>
> Regards,
>
> Jason
>
>
>
>
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