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

[Lelio Fulgenzi]

Thanks - that's what I was looking for to help me understand.

--------------------------------------------------------------------------------
Lelio Fulgenzi, B.A.
Network Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
"I can eat fifty eggs." "Nobody can eat fifty eggs."
  ----- Original Message ----- 
  From: Jim McBurnett 
  To: Erik Erasmus (E) ; Lelio Fulgenzi ; cisco-voip at puck.nether.net 
  Sent: Saturday, June 10, 2006 9:05 AM
  Subject: RE: [cisco-voip] PVDMs! What are they good for?


  Try this:
  http://www.cisco.com/en/US/products/hw/modules/ps3115/products_qanda_item0900aecd8016c6ad.shtml

  or 
  http://tinyurl.com/hsnsu

  Later,
  J



------------------------------------------------------------------------------
  From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Erik Erasmus (E)
  Sent: Friday, June 09, 2006 5:51 PM
  To: Lelio Fulgenzi; cisco-voip at puck.nether.net
  Subject: Re: [cisco-voip] PVDMs! What are they good for?


  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 - 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

   


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  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?

   

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

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