Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

CME 3.2 and Conf / Call Bridge

I have CME 3.2, on a 2821 running ver 12.4. I have both 7940G and 7936 phones and need to somehow create the ability for a conference/call bridge where users (all using voip) can dial in, no more than 48 total. They all go through the same 2821 router. Someone told me that I would have to get at least Unity Express AIM ver 3.1 to accomplish this. Can anyone assist?

Hall of Fame Super Gold

Re: CME 3.2 and Conf / Call Bridge

Hi, higly recommend you upgrade to 4.1 w/ IOS 12.4(11)XJ4.

That will give you the ability of creating multiparty conferences or bridges so to say, that are based on DSP hardware. Before that IOS/CME, a dual-port T1/E1 with a cross connection is required, that is a cumbersome solution.

Hope this helps, please rate post if it does!

New Member

Re: CME 3.2 and Conf / Call Bridge

So instead of getting Unity Express AIM 3.1, just upgrade CME to 4.1 and my IOS to 12.4(11)XJ4 will allow me to do a true conf bridge where people can dial in and not have to be added in by calling each individual?

Hall of Fame Super Gold

Re: CME 3.2 and Conf / Call Bridge

Yes, and you can have fancy functions like list who's in the call, play nice sounds when they join in, etc.

Only missing thing to a professional service is a pin-driven front-end to the bridges but someday that I'm in the mood I shall write some TCL/IVR script for that. I will also have the name recorded and announce at join time, thing that I find a little annoying but hey that makes people sound important.

Hall of Fame Super Red

Re: CME 3.2 and Conf / Call Bridge

Hi Glenn,

Just to add a note to the good info from Paolo. Here is the config info for CME;

SCCP: Configuring Multi-Party Ad Hoc and Meet-Me Conferencing in Cisco Unified CME 4.1 and Later Versions

To configure multi-party ad hoc conference support for 3-8 parties plus Meet-Me conferencing for up to 32 parties;

Hope this helps!


New Member

Re: CME 3.2 and Conf / Call Bridge

I have following config on cme

voice class custom-cptone jointone

dualtone conference

frequency 1200 1200

cadence 150 50 150 50

--More-- !


dspfarm profile 1 conference

codec g711ulaw

codec g711alaw

codec g729br8

codec g729r8

maximum sessions 2

conference-join custom-cptone jointone

conference-leave custom-cptone leavetone

associate application SCCP


sdspfarm conference mute-on 111 mute-off 222!

sdspfarm units 1

sdspfarm tag 1 mtp761076107610

conference hardware

load 7965 SCCP45.8-3-2S

load 7945 SCCP45.8-3-2S

load 7936 cmterm_7936.3-3-5-0

max-ephones 58

max-dn 192

ip source-address port 2000 secondary

--More-- calling-number initiator

service phone videoCapability 1

timeouts interdigit 6

system message USHE

url services

url authentication

time-zone 8

keepalive 10

voicemail 8688

max-conferences 8 gain -6


web admin system name cisco password cisco



ephone-template 1

conference drop-mode creator

conference add-mode creator

conference admin

softkeys hold Join Newcall Resume Select

softkeys idle ConfList Gpickup Join Login Newcall Pickup Redial RmLstC

softkeys seized Redial Endcall Cfwdall Pickup Gpickup Callback Meetme

softkeys connected Hold Trnsfer Park Endcall Confrn ConfList Join Select RmLstC


but my phones are unable to conference,

I get following error when I turn on debugs

1681756: Jun 25 20:02:20.960: SkinnyAddDnToHwConference: phone=2 (dn=34 chan=1 s

tate=9) (conf_dn=34 conf_chan=2 state=4)

1681757: Jun 25 20:02:20.960: SkinnyGetCallState for DN 34 chan 2 CONNECTED

1681758: Jun 25 20:02:20.960: called DN -1 chan 1, calling DN -1 chan 1 phone 3


1681759: Jun 25 20:02:20.960: SkinnyAddDnToHwConference: New adhoc conference

1681760: Jun 25 20:02:20.960: skinny_hwcfb_get_adhoc_number:

1681761: Jun 25 20:02:20.960: SkinnyAddDnToHwConference: Adhoc new conference se

tup failed!

1681762: Jun 25 20:02:20.960: ephone-3[11][SEP001E7AC364C7]:DisplayMessageTag: t

ag 138 (Unknown Tag)

1681763: Jun 25 20:02:20.960: ephone-3[11]:Failed to add DN 34 chan 1 to confere

nce with conf_dn 34 chan 2

1681764: Jun 25 20:02:26.720: %ISDN-6-CONNECT: Interface Serial0/0/0:22 is now c

onnected to 8984344 N/A

1681765: Jun 25 20:02:28.008: ephone-3[11][SEP001E7AC364C7]:SoftKeyEventMessage

event 27 line 1 callref 14467

1681766: Jun 25 20:02:28.008: ephone-3[11]:Block FAC when Sk pressed.

1681767: Jun 25 20:02:28.008: ephone-3[11][SEP001E7AC364C7]:SK ConfList line 1 r

ef 14467

1681768: Jun 25 20:02:28.008: ephone-3[11]:ConfListButtonPress

1681769: Jun 25 20:02:28.008: ephone-3[11][SEP001E7AC364C7]:SkinnyConfListButton

Press on line = 1, chan = 2

1681770: Jun 25 20:02:28.008: SkinnyConfListButtonPress: streamID is NULL, dn no

t in conference!

1681771: Jun 25 20:02:34.528: ephone-3[11][SEP001E7AC364C7]:SoftKeyEventMessage

event 15 line 1 callref 14467

1681772: Jun 25 20:02:34.528: ephone-3[11]:Block FAC when Sk pressed.

1681773: Jun 25 20:02:34.528: ephone-3[11][SEP001E7AC364C7]:SK Join line 1 ref 1


1681774: Jun 25 20:02:34.528: ephone-3[11]:JoinButtonPress

1681775: Jun 25 20:02:34.528: SkinnyJoinButtonPress: party=0 master_conf=0 parti


1681776: Jun 25 20:02:34.528: SkinnyJoinButtonPress: No selected party to join i

n conference!

1681777: Jun 25 20:02:34.528: ephone-3[11][SEP001E7AC364C7]:DisplayMessageTag: t

ag 138 (Unknown Tag)

1681778: Jun 25 20:02:34.668: ephone-3[11][SEP001E7AC364C7]:CallPrompt line 0 re

f 0: USHE

How do I troubleshoot this issue?

New Member

Re: CME 3.2 and Conf / Call Bridge


post me the :

show diag

show run

show voice dsp

New Member

Re: CME 3.2 and Conf / Call Bridge


Hope this helps.


New Member

Re: CME 3.2 and Conf / Call Bridge

Here it is

New Member

Re: CME 3.2 and Conf / Call Bridge

its seemes that you are using all your dsp resources ...

can you post please :

show dspfarm profile

correct me if i worng you are try to using the meetme conference ?