DSP Allocation

The following calculation are based on PVDM2
Router 2821
IOS V: 15.1(4)M1

PVDM Table

PVDM Number of DSP
pvdm2-8 1/2 DSP
pvdm2-16 1 DSP
pvdm2-32 2 DSP
pvdm2-48 3 DSP
pvdm2-64 4 DSP

Conference

Conference Codec Participants / dsp Sessions /dsp
G.711 only 8 8
G.711 only 16 4
G.711 only 32 2
G.729 (even if only one Particiepent) 8 2
G.729 (even if only one Participant) 16 1

when a DSP is used for conferencing , it can’t be used for any other thing (like transcoding or mtp) , it will be totally reserved

MTP IOS Hardware

Codec Sessions / dsp
G.711 16
G729 Not supported , only G.711

MTP IOS software

Codec Sessions / dsp
G.711 10000 (on 2821 )
G729 10000 (on 2821 )

CallManager : support software MTP , but only G711 Transcoding

Codec Sessions / dsp
G.711 16
G729 a/ab 8
G729 / G729b 6
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