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How to upgrade the DSP Farm, such as NM-DSP-FARM-C36 to NM-HDV-FARM-C90, by adding PVDM modules

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When you use Digital Signal Processors (DSPs) on the Cisco VG200 for conferencing and transcoding, the collection of DSPs is referred to as a DSP Farm. To use this version of the Cisco VG200 with a DSP Farm, dedicate all the DSPs to this function. 

The Cisco VG200 can provide dedicated transcoding and conferencing resources when equipped with the High Density Voice Network Modules (NM-HDV) Farm module. This module is equipped with two DSP SIMMs, and it is capable of accepting an additional three DSP SIMMs. Each SIMM contains three DSPs. Each DSP supports a maximum of four transcoding sessions. However, when transcoding Global System for Moblie Communication (GSM) codecs, the maximum number of transcoding sessions is three.

Each DSP not allocated for transcoding can be used to support a single conference call. One conference call can include a maximum of six parties. In addition, one DSP must be reserved for transcoding for every three concurrent participants using GSM codecs.

The maximum number of transcoding sessions supported by a five-SIMM configuration is 60. The maximum number of conference calls supported by a five-SIMM configuration is 15.

Voice Gateway Hardware Components

NM-HDV

NM-HDV2

DSP cards

NM-DSP-FARM-C36

NM-HDV-FARM-C90

Voice Gateways

IOS gateways

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