CME: Ad-Hoc Multiparty Conferencing Problem

Answered Question
Jul 5th, 2008

Hi,

I am trying to configure DSPFarm for ad-hoc multiparty conferencing as per documentation but when i try to configure maximum session in "dspfarm profile 2 conference", the available value is just 0. and when i execute sh dspfarm all command, the output you can see below:

CME#sh dspfarm all

Dspfarm Profile Configuration

Profile ID = 2, Service = CONFERENCING, Resource ID = 1

Profile Description :

Profile Admin State : DOWN

Profile Operation State : DOWN

Application : SCCP Status : NOT ASSOCIATED

Resource Provider : FLEX_DSPRM Status : NONE

Number of Resource Configured : 0

Number of Resource Available : 0

Codec Configuration

Codec : g711ulaw, Maximum Packetization Period : 30 , Transcoder: Not Required

Codec : g711alaw, Maximum Packetization Period : 30 , Transcoder: Not Required

Codec : g729ar8, Maximum Packetization Period : 60 , Transcoder: Not Required

Codec : g729abr8, Maximum Packetization Period : 60 , Transcoder: Not Required

Codec : g729r8, Maximum Packetization Period : 60 , Transcoder: Not Required

Codec : g729br8, Maximum Packetization Period : 60 , Transcoder: Not Required

Total number of DSPFARM DSP channel(s) 0

CME#sh inventory

NAME: "2811 chassis", DESCR: "2811 chassis"

PID: CISCO2811 , VID: V05 , SN: FCZ120872XE

NAME: "WAN Interface Card - Serial (1T) on Slot 0 SubSlot 0", DESCR: "WAN Interface Card - Serial (1T)"

PID: WIC-1T= , VID: 1.0, SN: 36242834

NAME: "VWIC2-1MFT-T1/E1 - 1-Port RJ-48 Multiflex Trunk - T1/E1 on Slot 0 SubSlot 1", DESCR: "VWIC2-1MFT-T1/E1 - 1-Port RJ-48 Multiflex Trunk - T1/E1"

PID: VWIC2-1MFT-T1/E1 , VID: V01 , SN: FOC12122L32

NAME: "2nd generation four port FXO voice interface daughtercard on Slot 0 SubSlot 2", DESCR: "2nd generation four port FXO voice interface daughtercard"

PID: VIC2-4FXO , VID: V03 , SN: FOC12081UJ3

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

PID: PVDM2-16 , VID: V01 , SN: FOC11525U28

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

PID: PVDM2-16 , VID: V01 , SN: FOC12085AAK

NAME: "AIM Service Engine 0", DESCR: "AIM Service Engine"

PID: AIM-CUE , VID: V03 , SN: FOC12043MQE

If you think there is any problem with configuration, please write down sample steps for Ad-Hoc Conferencing for more then 3 participants.

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Note: i am using CME on cisco 2811 with ios c2800nm-spservicesk9-mz.124-15.T5.

I have this problem too.
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Correct Answer by rob.huffman about 8 years 5 months ago

Hi Rameez,

Just to add a note to confirm Deji's great assessment here (+5 points for you Deji :)

You can not share a DSP between voice termination ports and conference bridges.

Allocation of DSP Resources Within the Voice Network Module

You allocate DSP resources either to voice termination of the voice trunk group or to the DSP farm. Occasionally these allocations can conflict.

If you previously allocated DSP resources to voice termination and you now try to configure a DSP farm, you might find that insufficient DSP resources are available. Conversely, if you previously allocated DSP resources to a DSP farm and you now try to configure a trunk group, you might find that insufficient DSP resources are available.

If your requested configuration is rejected, you have two options:

•Insert more DSPs on the voice network module (NM-HDV or NM-HDV2)

•Allocate a different voice network module for either the DSP farm or the trunk group

http://www.cisco.com/en/US/docs/ios/voice/cminterop/configuration/guide/vc_enh_confr_vgr.html#wp1040335

Hope this helps!

Rob

Correct Answer by Ayodeji oladipo... about 8 years 5 months ago

when you see maximum number of seesion to be "0" that measn that you do not have dsp resources for conferencing.

You may have configured your pri to use all the dsp resources you have.

To resolve this you will need to either add more dsp (pvdms) or reconfigure your pri to use only a few of the dsps so you can have some left for conferencing..

Your best bet, is to use the dsp calculator to calculate the dsp required for voice calls and conferencing

http://www.cisco.com/cgi-bin/Support/DSP/cisco_prodsel.pl

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Correct Answer
Ayodeji oladipo... Sat, 07/05/2008 - 03:04

when you see maximum number of seesion to be "0" that measn that you do not have dsp resources for conferencing.

You may have configured your pri to use all the dsp resources you have.

To resolve this you will need to either add more dsp (pvdms) or reconfigure your pri to use only a few of the dsps so you can have some left for conferencing..

Your best bet, is to use the dsp calculator to calculate the dsp required for voice calls and conferencing

http://www.cisco.com/cgi-bin/Support/DSP/cisco_prodsel.pl

Correct Answer
rob.huffman Sat, 07/05/2008 - 03:30

Hi Rameez,

Just to add a note to confirm Deji's great assessment here (+5 points for you Deji :)

You can not share a DSP between voice termination ports and conference bridges.

Allocation of DSP Resources Within the Voice Network Module

You allocate DSP resources either to voice termination of the voice trunk group or to the DSP farm. Occasionally these allocations can conflict.

If you previously allocated DSP resources to voice termination and you now try to configure a DSP farm, you might find that insufficient DSP resources are available. Conversely, if you previously allocated DSP resources to a DSP farm and you now try to configure a trunk group, you might find that insufficient DSP resources are available.

If your requested configuration is rejected, you have two options:

•Insert more DSPs on the voice network module (NM-HDV or NM-HDV2)

•Allocate a different voice network module for either the DSP farm or the trunk group

http://www.cisco.com/en/US/docs/ios/voice/cminterop/configuration/guide/vc_enh_confr_vgr.html#wp1040335

Hope this helps!

Rob

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