[cisco-voip] DSP configuration

Micah Bennett mbennett at als-xtn.com
Tue Oct 13 16:56:43 EDT 2009


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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