How to calculate PVDM requirement for Cisco IP Telephony
DSP (Digital Signal Processors) is a chip that performs all the sampling, encoding, and compression functions on audio coming into your router .DSPs typically come in chips to install in your Cisco router that look like old memory SIMMs.
Cisco bundles these DSP chips into Packet Voice DSP modules (PVDM)
Cisco provides a DSP calculator that provides the number of DSP chips you need to
purchase based on the voice network you are supporting. This tool can be found at
www.cisco.com/web/applicat/dsprecal/index.html Note :- require CCO login
