dsp resources

Unanswered Question
Feb 16th, 2009

Hi there !

I'm having a problem with dspfarm.. the router in using only the PVDM2-64 and PVDM2-32 ... those are onboard pvdm's

How can I start using the PVDM-12 cards that are in NM-HDV?


Router Configurations


! Onboard

voice-card 0

no dspfarm

dsp services dspfarm



voice-card 1

no dspfarm


! ERROR when I tryied to configure DSP resource


(config)#voice-card 1

(config-voicecard)#dsp services dspfarm

dspfarm is configured for NM-HDV2 card.

Only one dspfarm type is allowed.



sccp ccm group 988

associate profile 6 register XCODE1234



dspfarm profile 6 transcode

codec g711ulaw

codec g729r8

codec g729br8

codec g711alaw

codec g729abr8

codec g729ar8

maximum sessions 8

associate application SCCP




show inventory


NAME: "2821 chassis", DESCR: "2821 chassis"

PID: CISCO2821 , VID: V03 , SN: FTX1038A5QD

NAME: "Two port E1 voice interface daughtercard on Slot 0 SubSlot 0", DESCR: "Two port E1 voice interface daughtercard"

PID: VWIC-2MFT-E1= , VID: 1.0, SN: 34840061

NAME: "PVDMII DSP SIMM with Two DSPs on Slot 0 SubSlot 4", DESCR: "PVDMII DSP SIMM with Two DSPs"

PID: PVDM2-32 , VID: V01 , SN: FOC10301UQX

NAME: "PVDMII DSP SIMM with four DSPs on Slot 0 SubSlot 5", DESCR: "PVDMII DSP SIMM with four DSPs"

PID: PVDM2-64 , VID: V01 , SN: FOC1038277V

NAME: "High Density Voice on Slot 1", DESCR: "High Density Voice"

PID: NM-HDV= , VID: 1.1, SN: JAE07361AED

NAME: "E1 (2 Port) Multi-Flex Trunk (Drop&Insert) WAN Daughter Card on Slot 1 SubSlot 0", DESCR: "E1 (2 Port) Multi-Flex Trunk (Drop&Insert) WAN Daughter Card"

PID: VWIC-2MFT-E1-DI= , VID: 1.0, SN: 30888188

NAME: "PVDM 3-C549 Simm on Slot 1 SubSlot 1", DESCR: "PVDM 3-C549 Simm"

PID: PVDM-12= , VID: 1.1, SN:

NAME: "PVDM 3-C549 Simm on Slot 1 SubSlot 2", DESCR: "PVDM 3-C549 Simm"

PID: PVDM-12= , VID: 1.1, SN:

NAME: "PVDM 3-C549 Simm on Slot 1 SubSlot 3", DESCR: "PVDM 3-C549 Simm"

PID: PVDM-12= , VID: 1.1, SN:

NAME: "PVDM 3-C549 Simm on Slot 1 SubSlot 4", DESCR: "PVDM 3-C549 Simm"

PID: PVDM-12= , VID: 1.1, SN:

NAME: "PVDM 3-C549 Simm on Slot 1 SubSlot 5", DESCR: "PVDM 3-C549 Simm"

PID: PVDM-12= , VID: 1.1, SN:



I have this problem too.
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Marwan ALshawi Mon, 02/16/2009 - 17:59

wit hDsp there is tow baisic commands

first you need to enable the dsp on the voice port

with dsp farm command in you case on both voice-card 0 and 1

voice-card 0

voice-card 0


no win your router you have a dsp chip on you r mainboard which is 0 and other one in card 1

u can share the DSP resource from the one on mainboard by issueing the following command

voice-card 0

dsp services dspfarm

u need ur voice card look like

voice-card 0


dsp services dspfarm



use show voice dsp for troubleshooting as well

good luck

hope this helps

Chris Deren Mon, 02/16/2009 - 18:06

Actually, in order to share the PVDMs from different NMs all you need is dspfarm command under the voice-card as I stated earlier, dsp services depfarm allows you to configure the PVDMs for media sharing i.e. conferencing. These 2 get confused by folks all the time, but they have their own specific functions.


pauleversonCFH Thu, 11/03/2011 - 09:07


I have just stumbled across this post.

Did you ever get this working?

I am struggling to get a HM-HDV with 5 x PVDM-12's to join a dspfarm that currently contains 4 x PVDM2-64's

Should this work?

andrei.goncalves Thu, 11/03/2011 - 10:12

Wow.... that’s a 2003 question.... I don’t remember if I solved that or how… sorry..

Now I have another voice gateway (2911 with lots of PVDM’s…)


De: pauleversonCFH

Enviada em: quinta-feira, 3 de novembro de 2011 14:08

Para: Andrei Goncalves

Assunto: - Re: dsp resources


Re: dsp resources

created by Paul Everson in IP Telephony - View the full discussion


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