[cisco-voip] conference bridge

[Voll, Scott]

1.         With locations it should setup two 24k streams but if your
using CM I'm not sure how that works because I thought it only did G711
so maybe it's trying to do 160K(80k each) and that's why it seems bad.

2.         Is this the IOS or CM?  Are you talking about Meetme or
Adhoc.  I think your better option over a 64k FR link would be Meetme
with an IOS conference bridge at the central site so only one stream is
going over the FR link.  Maxes are configured in the advanced services
page of CM.

3.         I believe that software conference bridge in CM is G711 only
if I remember right.  I would always use an IOS Conference resource if
possible.

4.         I think the IOS is always the better option. But that's just
my two cents.

 

Scott

________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jefflin Choi
Sent: Wednesday, May 02, 2007 5:25 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] conference bridge

 

Hi All,

 

We have a central office using g711 and a remote branch with g729(Due to
64k framerelay link). 

 

We only have dsp's at the central site. In order to make a conference,
we configured it as conference bridge and place it as media resource for
the remote and the central site.

 

The problem is, when doing adhoc conference with the remote branch, the
quality of the remote phone degrades to an unacceptable situation.
Without conference, the voice quality is ok. 

 

Testing the conference with 100mbps link, voice quality is better so it
seems like bandwidth is the issue.

 

Since configuring this for the first time...had few questions hope
someone could enlighten me.

1> what will be the bandwidth required when the remote branch did an
adhoc conference with for example 2 phones. 2 phones at central site
that uses g711. Is it still 24k?

 

2>I had this configuration where the maximum session is 2. Is this 2
conference with 8 participants? Can the i use this as 5 conference with
3 participants?

 

3>Can i use a transcoder instead of conference bridge and transcode the
g729 of the remote to g711 then the participants will use the
callmanager's software conference bridge to do a conference using all
g711? 

 

4>Trying to configure the Media resource group list using the software
conference bridge and fallback to the the enhance ios conference bridge
if in case g729 comes in but it didn't work. Seems like i have to
configure every phone on central and remote to use the enhance ios
conference bridge. Is there a way to allow this? 

 

Thanks in adv.

 

 

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