[cisco-voip] Design question on Voice Gateways / CFB / Transcoders

[Scott Voll]

Really depends on where the resources are going to be used.  you will need
the transcoding resources at the UCCx site.  That is where all the
transcoding will be done.  As for Conference resources, where ever it will
be used.  I'm guessing split.  some at each site.

YMMV

Scott

On Tue, Apr 27, 2010 at 6:49 PM, Bill Riley <bill at hitechconnection.net>wrote:

>  I am doing a redesign of an existing  voice network. We currently have
> two 3845’s. One 3845 has three MFT-2 port PRI’s. Four of the PRI’s are used
> for inbound and outbound calls. One port on the third MFT is used as a TIE
> line between a Nortel box. We also have the other 3845 with two MFT-2 ports.
> Four of those PRI’s are used for inbound and outbound calling. The TDM
> gateways are separated like this for business / political purposes which I
> can get around if I need to and consolidate all of the TDM cards into one
> 3845 by purchasing some Network Modules. The other design problem is they
> are currently sending a substantial number of calls over the WAN to the
> central UCCX servers as G.711. This is causing some network congestion
> problems at their remote facilities. At any given time I would estimate
> about 60 concurrent calls coming in as G.711 over the wan to UCCX. I now
> want to change the codec to G.729 over the WAN so I need to add some
> transcoding resources. They also have their conference bridges setup to use
> Call Manager as G.711 so I want to move those conference into the router as
> well. I know how to do all this and the configuration is not a problem, I am
> more concerned with what would be the best use of the routers. Should I
> leave the TDM interfaces split like this. Purchase two fully populated
> NM-HDV2 with four PVDM2-64. Place one NM module in each router and split the
> CFB’s / Transocding.  Should I consolidate the TDM interfaces in one router
> and configure the other router with two NM’s to only do the CFB and
> Transcoding? Or should I try to consolidate everything and place all 9 PRI’s
> and the extra NM’s for CFB and transcoding in one router. I have the extra
> physical routers so I think I should use them.
>
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