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

[Rhodium]

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