[cisco-voip] PVDMs! What are they good for?

[Erik Erasmus (E)]

Lelio



I am implementing a solution now where we used PVDMs as follows:



1.	to handle the E1 PRI lines - probably the equivalent of your
T1s.
2.	at remote branches to handle the ISDN basic rate line to the
telco for local breakout



and soon we will have to add DSPS - PVDMs to allow conferencing in
branches and also to HQ across the IP cloud. As far as I know the Call
Manager only supports G711 conferences so if a branch connects to HQ
across an IP wan in a centralised CCM model via G729 you will need
DSPs at HQ to mix the G729 and G711 calls in a conference



also see the DSP calculator on www.cisco.com <http://www.cisco.com/>
- as clear as MUD in some cases as to how many DSPs to buy - but once
you playe with it online and get used to it it is actually very
usefull. DSPs are expensive so it is important to plan and get it
right first time





erik erasmus



________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lelio
Fulgenzi
Sent: 09 June 2006 09:23 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] PVDMs! What are they good for?



Can anyone explain briefly what the PVDMs are used for on the routers?
Do I need these if I am going to be running T1s, FXOs and SRST or do I
need them just for conferencing?



----------------------------------------------------------------------
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Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
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"I can eat fifty eggs." "Nobody can eat fifty eggs."



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