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New Member

DSP

Hi Gurus,

Can anybody suggest some documents which explain DSP resource, DSP farm and how they interact/interface with other components in a IPT system?

Thanks!

3 REPLIES

Re: DSP

DSPs provide four major functions in a voice gateway:

- Voice termination: is the process of digitizing and packetizing the audio stream on a TDM interface. A DSP is required to convert the traditional audio stream to VoIP.

- Trancoding: is the process of matching two disparate VoIP streams. This is required when the codecs or sampling rate of two VoIP streams do not match.

- Conferencing: The DSPs in a voice gateway cna be registered to a CallManager to provide hardware based conferencing.

- Media termination point (MTP): You insert MTP's into a call to provide supplementary services if H323v2 is not supported end to end. Supplementary services include hold, converence, or other signaling instructions that are invoked during the call.

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_configuration_example09186a0080334294.shtml

Here is the DSP calculator:

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

Cisco voice gatewasy use various DSP models with different capabilities. Some GW and Network Moduls (NM) use modular DSPs, or Packet Voice DSP Modules (PVDM).

Re: DSP

Attached is a file with a DSP chapter that will give you great info.

New Member

Re: DSP

Hello. Can you share student guide for CIPT2? I have only CIPT1 Student Guide

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