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Hardware for Voip

Answered Question

Hi All,


In getting into this voip stuff, I have come to a point where i am slightly confused about the hardware. All of my sites will have 2800 series routers. What I do not understand is this whole DSP idea and how many do I need?! Can someone shed some light?


TIA,


R

Correct Answer by Brandon Buffin about 11 years 2 weeks ago

Here's a couple of commands that will help.


show diag

show voice dsp


Brandon

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Brandon Buffin Wed, 08/09/2006 - 05:21
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DSPs are used for media termination (PSTN connectivity), conferencing, and transcoding. The number you need depends on the number of PSTN calls, conferences, and transcoding sessions you need to support. The following link has some good information regarding the number of calls supported by different platforms/modules.


http://www.cisco.com/univercd/cc/td/doc/product/voice/c_callmg/4_2/srnd4_2/uc4_2/42media.htm#wp1044922


A great resource for figuring out your DSP requirements is the DSP calculator, found here:


http://www.cisco.com/cgi-bin/Support/DSP/cisco_prodsel.pl


Hope this helps. If so, please rate the post.


Brandon

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