[cisco-voip] Which IPVC do I need?

[IT]

I am trying to determine which IPVC is right for me.

I have recently installed a CallManager infrastructure. It is a single
CM server with a 2821 gateway (2 PRI's), with several branch offices
connecting with 2801's via T1 VPN's or Point-to-Point T1's, and some
smallers (1-2 person) offices connecting with DSL.  I intend on placing
Polycom Video conference equipment in the offices connected via T1, and
VT Advantages all over the place. Most importantly, I would like to be
able to manage a large (20-30) person audio conference, but meet-me
conferences are insufficient, as we need to create access codes, and
caller announcements. Secondly, I would like to be able to host a 5-10
party Video conference, using both Polycom's and VTAdv's as endpoints.
Should I be looking at a 3540? Will a 3525 do anything for me? What do
the 3520's do? I have spent all day reading the Cisco docs on this
stuff, but I am the IT guy who is now being thrown in to the telco
world, and its all greek...

 

Thanks for the help.

-Avidan


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