Why my routers says I have two voice cards (DSP)

[Juan Gerardo Hernandez]

Hi all,

I just wanted to ask you, why my router has 2 voice cards, in the show run, look at my configuration.

voice-card 0
 dspfarm
 dsp services dspfarm
!
voice-card 1
!
!
voice rtp send-recv
!
voice service voip
 ip address trusted list
  ipv4 10.2.50.5
  ipv4 10.0.0.0 255.0.0.0
  ipv4 10.2.50.9
 h323
 modem passthrough nse codec g711ulaw
!

But, when I put, show inventory, it says that the router only have one card.

#show inv
NAME: "CISCO3945-CHASSIS", DESCR: "CISCO3945-CHASSIS"
PID: CISCO3945-CHASSIS , VID: V02, SN: FTX
NAME: "Cisco Services Performance Engine 250 for Cisco 3900 ISR on Slot 0", DESCR: "Cisco Services Performance Engine 250 for Cisco 3900 ISR"
PID: C3900-SPE250/K9   , VID: V04 , SN: FOC
NAME: "VWIC3-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1 on Slot 0 SubSlot 0", DESCR: "VWIC3-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1"
PID: VWIC3-2MFT-T1/E1  , VID: V01 , SN: FOC
NAME: "3rd generation four port FXS DID voice interface daughtercard on Slot 0 SubSlot 1", DESCR: "3rd generation four port FXS DID voice interface daughtercard"
PID: VIC3-4FXS/DID     , VID: V03 , SN: FOC
NAME: "PVDM3 DSP DIMM with 192 Channels on Slot 0 SubSlot 3", DESCR: "PVDM3 DSP DIMM with 192 Channels"
PID: PVDM3-192         , VID: V01 , SN: FOC
NAME: "Network Module Adapter for SM Slot on Slot 1", DESCR: "Network Module Adapter for SM Slot"
PID: SM-NM-ADPTR       , VID: V01, SN: FOC
NAME: "Enhanced High Density Voice Network Module on Slot 1", DESCR: "Enhanced High Density Voice Network Module"
PID: NM-HD-2VE         , VID: V01 , SN: FOC
NAME: "Services Module with Services Ready Engine on Slot 2", DESCR: "Services Module with Services Ready Engine"
PID: SM-SRE-910-K9     , VID: V01 , SN: FOC
NAME: "C3900 AC Power Supply 1", DESCR: "C3900 AC Power Supply 1"
PID: PWR-3900-AC       , VID: V03 , SN: QCS

¿am I wasting DSP resources by not using that "phantom" card?

I am using that DSP for the following configuration.

2 E1 DS0 voice link configuration (60) channels.

dspfarm profile 1 transcode  
 codec g729r8
 codec g729br8
 codec g711ulaw
 codec g711alaw
 codec g729ar8
 codec g729abr8
 maximum sessions 8
 associate application SCCP
!
dspfarm profile 2 conference  
 codec g711ulaw
 codec g711alaw
 codec g729ar8
 codec g729abr8
 codec g729r8
 codec g729br8
 maximum sessions 4
 associate application SCCP
!

What I meant to ask you, is...

do I only have 1 DSP card?

do that DSP card is the only card I need to perfectly fit my configuration?

I've read about DSP, but I only know fundamentals. I do not know very much the meaning on my router configuration. I just had a router with a similar configuration, copy/pasted it, and then in works.

Regards,

[Anthony Holloway]

Your High Density Voice Card has PVDM's on it.  They are most likely PVDM2's and you'll have some limitations using them in the same pool as your PVDM3's.

EDIT: Read through your inventory too fast.  If you had PVDMs on your module, they woulod be PVDM2's.

Anthony Holloway

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[islam.kamal]

YOu only have one DSP , PVDM3-192  which is on slot0,  Kindly find the below link.

http://www.cisco.com/en/US/prod/collateral/modules/ps3115/data_sheet_c78-553971.html

Thank you

please rate if this will help you

[Chris Deren · Accepted solution]

Blank NM-HD-2VE card in slot 1 via an adapter is what creates the dsp voice card, though there are not PVDMs in it, so no need to worry about it.

HTH,

Chris

[Ayodeji Okanlawon]

On the DSP side of things, you have a PVDM3-192. This PVDM has a total of 5 dsps in it. It is a combination of a single PVDM3-128 and PVDM3-64.

Each PVDM3-128 has 3 dsps and each PVDM3-64 has 2 dsps..Hence giving you a total of 5 dsps..

You can read more on PVDM2 and PVDM3 credit allocations here..

https://supportforums.cisco.com/docs/DOC-29164

Attached is a Q and A that helps you to understand Cisco PVDM better

Please rate all useful posts

"opportunity is a haughty goddess who waste no time with those who are unprepared"

[Juan Gerardo Hernandez]

Hi Cris, I didn't realize I had a Voice Card withput DSP, I didnt realice a NM could create a "Voice Card conf" even without a PVDM on it.

Well that was what I understood, also i'll check the links posted on this thread.

Thank you all of you for your time, your help is very useful.

regards.