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Motherboard vs NM DSP

user-cisco
Level 1
Level 1

‎05-21-2007 11:19 AM - edited ‎03-14-2019 09:37 PM

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

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gogasca
Level 10
Level 10

‎05-22-2007 07:47 AM

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

Router(config-voicecard)#dspfarm

Router(config-voicecard)#end

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

user-cisco
Level 1
Level 1
In response to gogasca

‎05-22-2007 12:41 PM

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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