Conference between CUCM 8 and CME

Unanswered Question
Feb 10th, 2012
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Hi voice team!

I have a CUCM (site A) with conference bridge working properly to internal calls and with another site C using CME.

But, the conference between CUCM (site A) and CME (site B) is not working...

The Site B configuration is bellow:


voice-card 0

dsp services dspfarm

interface Vlan1

description VLAN-IT7

ip address

ip flow ingress

ip nat inside

ip virtual-reassembly in

ip tcp adjust-mss 1452

h323-gateway voip interface

h323-gateway voip bind srcaddr

sccp local Vlan1

sccp ccm identifier 10 version 7.0



sccp ccm group 1

associate ccm 10 priority 1

associate profile 1 register confe1


dspfarm profile 1 conference

codec g729br8

codec g729abr8

codec g729ar8

codec g729r8

codec g711alaw

codec g711ulaw

maximum sessions 2

associate application SCCP


sdspfarm units 10

sdspfarm tag 1 confe1

conference hardware

max-conferences 4 gain -6


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Vipul Jindal Fri, 02/10/2012 - 12:09
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who is initiating the conference?

cme phone or cucm phone??


Vipul JIndal

Chris Deren Mon, 02/13/2012 - 05:59
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    2017 IP Telephony, Contact Center, Unified Communications

Then the CME configuration is irrelevant here as the issue is on CUCM side, are you using hardware or software bridge?

If software then what is the region between the CME trunk and the phone (what codec is defined) as you may need transcoders if G729 is defined due to the fact that software conference bridge only supports G711.


Jean Lofrano Tue, 02/14/2012 - 11:13
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Ah ok. I need to chenge the WAN codec for g711. I ´m going to test this..



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