CUCM 8.6 Multipoint Calls on TP Endpoints

Answered Question
Aug 21st, 2012

Hello all,

We have a Profile series sets and EX90 endpoints which needs to be configured on Call Manager 8.6. I know that it can be add as a device directly from CUCM 8.6 onwards. If i need to do a Multipoint call between by profile65's and EX90's, how can it be achieved?

We also has 9971 phones.

Can i use a MCU, and use as HW Conference bridge in CUCM? Can anyone share a document on this?



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Correct Answer by Alok Jaiswal about 4 years 5 months ago

just tested in properly with CUCM registered endpoints....I perform testing with following devices

cucm 8.6.2

MCU 4501 sw ver 4.2 (2.30)

Ip-phones used 7985,ip communicator, 9971...

so it should work from 4505 as well...attaching some config snapshots..

Once you are in conf CUCM sends necessary API commands over http to create the ad-hoc conference.



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Overall Rating: 5 (1 ratings)
Alok Jaiswal Wed, 08/22/2012 - 19:34

Hi Bobby,

I can't say its officially supported or not. As i don't see any documentation mentioning for 4500 series.

But we have tried it and it works.!! you can surely give it a try.



Correct Answer
Alok Jaiswal Thu, 08/23/2012 - 01:13

just tested in properly with CUCM registered endpoints....I perform testing with following devices

cucm 8.6.2

MCU 4501 sw ver 4.2 (2.30)

Ip-phones used 7985,ip communicator, 9971...

so it should work from 4505 as well...attaching some config snapshots..

Once you are in conf CUCM sends necessary API commands over http to create the ad-hoc conference.



bobby.jacob Thu, 08/23/2012 - 01:48

Thanks Alok for the confirmation,

I will update you with the result once i finish.

Thanks again,


Alok Jaiswal Mon, 09/10/2012 - 03:27

Hi Bobby,

during the testing i found that actually you don;t need any configuration on the MCU side for registering the MCU as hardware conference birdge on cucm.

you need to just add the mcu as telepresence mcu bridge resource on cucm. that's all it needs.

onlything to take care is that adding the mcu as conf bridge then you won't be able to point the sip trunk to same mcu.



bobby.jacob Tue, 10/02/2012 - 01:57

Hi Alok,

I had done the MCU Conf Bridge on CUCM 8.6.2 and made a MRGL for all my video enpoints. Also i made a Meetme no. (555)

So now when i dial meetme no.555 from my 9951 phones we are able to do a conference through MCU.

But could you please advice how i will be able to dial meetme or cofigure the same conference from EX90 or Profiles so that all my 99xx and TP endpoints could do a meetme conf.



Patrick Pettit Tue, 10/02/2012 - 18:14

Hi Bobby.  I haven't gone as far as configuring meet me numbers in CUCM.  I do believe that TE6, will have the ability to start Ad Hoc Conferencing when registered to CUCM.  Not sure of a timeline or anything at this point for release, but its one of the features that will hopefully be accompanying TE6 when it comes out. 



Alok Jaiswal Wed, 10/03/2012 - 00:11

Hi Bobby,

As mentioned by Patrick I am also looking for TE6 to get released. I think i need to run some tests before i comment further.

however is it a requirement to launch the Meet me conference ? because what i know is that once the meet me is launched by any party the other party can just dial the numbers of that meet me bridge and they will join into the conference. The other party's don't have to press meet me and join in the conference.

so i belive you should be able to join in the meet me bridge but you won't be able to launch the meet me.

I don't know if that fulfill your requirement !!



bobby.jacob Wed, 10/03/2012 - 02:16

Thanks alok/Patrik,

Currently iam able to intiate conference using MCU  from 99XX phones by Meetme feature in CUCM, even EX90 can dial the

'meetme' number and join the conference which is intiated by 9971 User.   My question was, how can EX90 can intiate a conference as there is no meetme option. Or can i make a 'multiway' on MCU and register to CUCM so that EX 90 and 99xx can dial the 'multiway' number and join the conference?



Patrick Pettit Wed, 10/03/2012 - 03:02

Hi Bobby.  I'm curious, and will try this later on perhaps, but when I have my 9951 on CUCM along with EX60, if i call EX60 from 9951, then I need to have someone else join the meeting, I hit the conference button on the 9951 and call the other person, then hit conference and the call will escalate to MCU with no problems.  Then 9951 can add more if need be. 

TE6 will have the option for "merge" and use CUCM resource for ad hoc conferencing with MCU and call will escalate to MCU when initiated from EX on CUCM. 

When you say "Multiway", I'm thinking VCS Multiway in which EX90 if configured for Multiway can initiate Multiway conference, but the EX90 must be on VCS in order for this to work and be the initiator of the Multiway conference.  You can probably have MCU as resource in CUCM and have Multiway on VCS running as well if you want to. The problem is, is that you may get real close to over allocating the MCU and then have a resource issue if folks keep building Multiway Conferences etc.  But I think this is something you need to gauge in the environment its running. 

Hope this sorta answers your questions.



bobby.jacob Wed, 10/03/2012 - 06:58

Thanks for your reply,

As you said, its possible to dial the conference from 99XX phones and also able to join that conference from EX90's.

But if you need to intiate the conference from EX90 its not working.

I was thinking to cancel the MCU Bridge in CUCM and create the following:


1)Configure SIP.

2)Conference ID.


1)Create SIP Trunk

2)Route Pattern

Hope this would work?



Alok Jaiswal Wed, 10/03/2012 - 08:37

Hi Bobby,

Yes currently you can't initiate a multiway by the endpoint registered on CUCM although they can join in a multiway conf.

We would have the adhoc conf bridge after TE6 on CUCM as well, but we don't when it will be available.

what you are thinking is a right way to do. Although confugring the MCU as sip trunk won't allow you to configure the MCU as conference bridge.

so i would give you a suggestion here. Rather then removing the MCU from conf bridge let the config be present. this will allow you to initiate a adhoc conf from 9951 and other ip-phones.

For ex60 you can use MCU as h.323 gateway on the CUCM. and then configure the conf-d and set the route pattern to go to h.323 gateway and this way Ex60 can also initiate the conf.

This workaround will give you both the options. Adhoc conf plus schedule conf to dial.



bobby.jacob Sun, 10/07/2012 - 20:36

Hello Alok,

I tried with H323 but was not able to dial the Conference Number, so i removed the MCU Bridge on CUCM and created SIP trunk on CUCM towards MCU.

Now iam able to have conferences by dialing the Conference digits created on MCU.

We will wait till the next release of Software for the adhoc and meetme conferences.

I have a small query, iam able to dial to PSTN calls(audio calls) from my 99XX , but not able to dial from EX or Profiles?

Can i configure to allow Audio calls to PSTN from EX?


Purna Wijenayaka Tue, 03/19/2013 - 22:26


We got MCU 5310 registered on CUCM 8.6.2 as a Telepresense conference Bridge , and added the MCU to the (at the end) media resource group and Media resource group list , but still unable to make a multiparty video call with using three jabber clients who has the same MRGL ,

please advice ,



emresumengen Tue, 04/09/2013 - 07:11

Hi all,

This is also something I'm looking forward to doing...

We have TP endpoints (EX90s and MX200s) registered on CUCM 8.6.2 natively. Also, the 4505 MCU is registered to the CUCM as a conference bridge.

Unfortunately, we're not able to escalate point-to-point video calls to multipoint calls, on video endpoints.

Is this still not supported, or are we missing anything?

Purna Wijenayaka Tue, 04/09/2013 - 08:04

Hi ,

This is for your info ...

I was able to make a video conference using jabber clients after upgrading the CUCM to latest that was 8.6.2 22000-9

while a point to point jabber call is going on , that jabber user can conference the third party , and all three parties are in the same video conference..

is that what you trying to do ?

jabber : 9.1

CUCM :8.6.2 22000 -9 latest

MCU 5310 registered as conference bridge and in the MRGL

emresumengen Tue, 04/09/2013 - 09:50

Hi Purna,

What I'm trying to do is not the same, but very similar, as we're using TP endpoints instead of Jabber.

The CUCM version is above, as we have MX300 in the supported endpoints list, without requiring a .cop installation, but I'll need to check the exact version. And, our MCU is 4500 series, instead of 5300. But, other than these, the topology seems to be very much like what you have.

The problem:

1) We can't do CUCM provisioning, as MX300 and EX90 with TC/TE6 software seems to require phone configuration files signed by CUCM (as in .cnf.xml.sgn) but we really don't want to mess with the production CM cluster, unless very necessaray. So we went on with manual provisioning of the SIP profiles on the endpoints, at least for now. (I'm not sure if this is a relevant issue or not.)

2) That said, our endpoints don't seem to have the means to "merge" two calls. Ie;

- I dial TP-B from TP-A as call-1

- I get call-1 on hold and dial TP-C from TP-A

- What I get is "swap", instead of "merge" on the interface.

- If I try to "add" a second device during a call is ongoing, I can only establish an audio call (which is something I'd expect, without an MCU).

For this, we just created device definition on CUCM for TP endpoints, and configured endpoints SIP profiles with External Manager IP address and URI, as well as setting SIP server type to Cisco.

If you can share what you did, in terms of configuration, it would be very nice, to see if we're missing something. (All current Cisco documentation seem to rely on CUCM provisioning, which as stated, is something we're having problem doing.)

And, if you (or anyone else) had any succcess / have any information on using DSP3 based conference bridge resources on CUCM for creating ad-hoc conferences through TP endpoints, I'd be glad to hear that...


Muhammad Irfan Wed, 10/23/2013 - 02:20

Hi All,

I have  1X LIC-5300-4PL license, how many participant can be in a conference with this license.

I know this license will have 1 Full HD 2 HD and 4 SD prots, so ports menas participant?/

Thanks in advance.


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