[cisco-voip] DSP configuration

[Nick Matthews]

The DSP calculator as mentioned is the tool you're looking for.

But - your calculations are pretty close.

Instead of thinking in dsp/call, you should think about call/dsp.

The math here works like this:
16 channels / DSP
G711 - 16 calls per DSP
G729 - 6 calls per DSP.

If you were to switch it around, your calculations are 16 calls per
DSP on G711, and 8 for G729.  It's pretty close, but just close enough
to cause problems.

-nick

On Tue, Oct 13, 2009 at 4:56 PM, Micah Bennett <mbennett at als-xtn.com> wrote:
> Hello all
>
>
>
> Its been a while since our system deployment so I am trying to refresh
> myself on the DSP / PVDM quantity I need for the number of trunks I have.
>
>
>
> I have 276 Trunks coming into my primary location.
>
>
>
> Primary location has call manager cluster and IPCC express cluster.
>
>
>
> We have two remote offices connected via MPLS.
>
>
>
> My IPCC cluster is configured for G711.
>
>
>
> Any calls we send to the remote offices get sent at G729 to save on the
> bandwidth usage.
>
>
>
> If I recall, I need 1 DSP for every voice channel at G711 and 2 DSPs for
> every voice channel at G729.
>
> So at a minimum I would have 276 DSPs + X (X being the max quantity of
> trunks I expect to send out as G729).
>
>
>
> Also, all of the these DSPs (PVDM2-64) modules will be where every the voice
> trunks are.
>
>
>
> Will I need any DSPs at the remote offices if no Voice trunks will be
> terminated there?  Any calls they initiate will come across the MPLS network
> and go out from our primary location at G729.
>
>
>
> Micah Bennett
> Telecommunications Admin
> Active Outdoors
>
>
>
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