AD HOc conference issue

Unanswered Question
Jul 14th, 2009
User Badges:

I can't seem to do it across the VPN.

Everyone is default g.711

Internal it works fine.

The site across the vpn can not do conferencing. So it seems that something is off. I just can't put my finger on it.

I have the CFB confgiure and have the MRG in both DP's

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Jaime Valencia Tue, 07/14/2009 - 09:58
User Badges:
  • Cisco Employee,
  • Hall of Fame,


and exactly what happens???

no audio?

error when pressing conference 1st time?

error when trying to conference the 3 parties?

hard phones? IPC?



if this helps, please rate

Enable CallManager detailed trace, you should find "out of resource" or simulator message.

Conferencing resource can be configured as a profile on the Voice Gateway if you have enough DSP resource. How to find out?

Do the "Max sess ?" under the "dspfarm profile 1 conference", you only need one!!

You can also do a "sho inv" - look at PBDM's.

voice-card 0


dsp services dspfarm


dspfarm profile 1 conference

codec g711ulaw

codec g711alaw

codec g729ar8

codec g729abr8

codec g729r8

codec g729br8

conference-join custom-cptone jointone

conference-leave custom-cptone leavetone

associate application SCCP

Max sess ?


sccp ccm group 500

bind interface GigabitEthernet0/1.5

associate ccm 500 priority 1

associate profile 1 register GW-CNF


sccp local GigabitEthernet0/1.5

sccp ccm identifier 500 version 4.1



Now add "Hardware conferance bridge" "GW-CNF" in CallManager and add to Resource Group for phones. Restart CallManager.

After Restart check CFB registration, and test.


This Discussion