Motherboard vs NM DSP

Unanswered Question
May 21st, 2007

hi all

if i have PVDM2-xx on 28xx series gateway's motherboard, and a network module (NM-HDV2-1E1) but this module does not have any PVDM2 on it

how can i let the network module take DSP resourses from motherboard DSPs this is cause it needs dsp resources to make voice termination to pstn?

please help

I have this problem too.
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gogasca Tue, 05/22/2007 - 07:47

That is called DSP sharing.

To enable DSP sharing, use dspfarm commando in the voice-card configuration.

This example was taken from Voice GWs and GKs book.

2811 ISR with a PVDM2-16 in the mainboard and NM-HDV2 in slot 1. With this configuration, the DSPs on the main board are exported, allowing them to be allocated to voice calls arriving on a T1 or E1 port in the NM-HDV2. The DSPs in the NM-HDV2 are not being exported in this ex.

Router#conf t

Router(config)#network-clock-participate wic 2

Router(config)#network-clock-participate slot 1

Router(config)#voice-card 0



The DSPs on the main board of an ISR are configured under voice-card 0

user-cisco Tue, 05/22/2007 - 12:41

I tried dspfarm command under voice-card 0 and made a call from pstn to ip phone, it rings but calling party did not hear ring back and when call was answered there was no audio!!

please help solving this issue


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