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<TITLE>Re: [cisco-voip] PVDMs! What are they good for?</TITLE>
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<FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Perhaps look at convedia ? Media translation is a hairy business... You will find that you need to stay on top of the user use cases to make sure a G729 caller tries to call a G711 call without hitting a translator.<BR>
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On 6/9/06 3:50 PM, "Erik Erasmus (E)" <ErasmuE4@telkom.co.za> wrote:<BR>
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</SPAN></FONT><BLOCKQUOTE><FONT COLOR="#000080"><FONT SIZE="4"><FONT FACE="Arial"><SPAN STYLE='font-size:13.0px'>Lelio<BR>
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I am implementing a solution now where we used PVDMs as follows:<BR>
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</SPAN></FONT></FONT></FONT><OL><LI><FONT COLOR="#000080"><FONT SIZE="4"><FONT FACE="Arial"><SPAN STYLE='font-size:13.0px'>to handle the E1 PRI lines – probably the equivalent of your T1s.</SPAN></FONT></FONT></FONT><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>
</SPAN></FONT><LI><FONT COLOR="#000080"><FONT SIZE="4"><FONT FACE="Arial"><SPAN STYLE='font-size:13.0px'>at remote branches to handle the ISDN basic rate line to the telco for local breakout</SPAN></FONT></FONT></FONT><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'> <BR>
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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<BR>
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also see the DSP calculator on www.cisco.com <a href="http://www.cisco.com/"><http://www.cisco.com/></a> – 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<BR>
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erik erasmus<BR>
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<FONT SIZE="4"><FONT FACE="Tahoma"><SPAN STYLE='font-size:13.0px'><B>From:</B> cisco-voip-bounces@puck.nether.net [<a href="mailto:cisco-voip-bounces@puck.nether.net]">mailto:cisco-voip-bounces@puck.nether.net]</a> <B>On Behalf Of </B>Lelio Fulgenzi<BR>
<B>Sent:</B> 09 June 2006 09:23 PM<BR>
<B>To:</B> cisco-voip@puck.nether.net<BR>
<B>Subject:</B> [cisco-voip] PVDMs! What are they good for?<BR>
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</SPAN></FONT><FONT SIZE="4"><FONT FACE="Times New Roman"><SPAN STYLE='font-size:13.0px'>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?<BR>
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</SPAN></FONT><FONT SIZE="4"><FONT FACE="Times New Roman"><SPAN STYLE='font-size:13.0px'>--------------------------------------------------------------------------------<BR>
Lelio Fulgenzi, B.A.<BR>
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1<BR>
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)<BR>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ <BR>
"I can eat fifty eggs." "Nobody can eat fifty eggs."<BR>
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</SPAN><FONT COLOR="#4A4A4A"><FONT SIZE="2"><SPAN STYLE='font-size:10.0px'>Keith Burns | Director of Product Development | OneIPVoice | 720.891.4279<BR>
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