[cisco-voip] Outbound Calls from OCS to Cisco IP Phone

Bill bill at hitechconnection.net
Mon Nov 1 10:37:33 EDT 2010


Yes but I don't think the voice terminates on the mediation server anymore.
The RTP G.711 call is directly between the MOC client and the Cisco IP phone
once the call is setup. 

 

Before it was MOC RTaudio to the mediation server and G.711 IP phone to the
mediation server. 

 

  _____  

From: Matt Slaga (US) [mailto:Matt.Slaga at us.didata.com] 
Sent: Monday, November 01, 2010 9:34 AM
To: Bill; 'Ahmed Elnagar'; 'Sechaba Mokoena'
Cc: cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Outbound Calls from OCS to Cisco IP Phone

 

You absolutely need a mediation server (although in Lync it is part of the
front end now) to integrate to UCM.  The mediation server handles the
signaling and converts not just the codec (if necessary, it can allow G711
passthrough), but also SIP or SIP/TLS to SIP/MTLS.  

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Bill
Sent: Monday, November 01, 2010 10:18 AM
To: 'Ahmed Elnagar'; 'Sechaba Mokoena'
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Outbound Calls from OCS to Cisco IP Phone

 

It's what the Microsoft reps told us during our discussion on Lync / CUCM
integration. 

 

  _____  

From: Ahmed Elnagar [mailto:ahmed_elnagar at rayacorp.com] 
Sent: Monday, November 01, 2010 9:19 AM
To: Bill; Sechaba Mokoena
Cc: cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Outbound Calls from OCS to Cisco IP Phone

 

Yes it was a session for an intro to Lync.maybe I will review the recorded
session again if you got the information from  a solid source "maybe I
miss-understand something in the session".

 

 Best Regards;

  Ahmed Elnagar

  Senior Network PS Engineer

  Mob: +2019-0016211

  CCIE#24697 (Voice)

 Description: ccie_voice_large.gif

 

From: Bill [mailto:bill at hitechconnection.net] 
Sent: Monday, November 01, 2010 4:13 PM
To: Ahmed Elnagar; 'Sechaba Mokoena'
Cc: cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Outbound Calls from OCS to Cisco IP Phone

 

What version are you talking about? 2010 / Lync can use G.711 without a
mediation server. 

 

  _____  

From: Ahmed Elnagar [mailto:ahmed_elnagar at rayacorp.com] 
Sent: Monday, November 01, 2010 9:14 AM
To: Bill; Sechaba Mokoena
Cc: cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Outbound Calls from OCS to Cisco IP Phone

 

This is new to me really.I had the below statement from a MS consultant
"their only supported codec is RT-Audio and you need a mediation server
whenever you need to integrate OCS with the outside world!!!"

 

 Best Regards;

  Ahmed Elnagar

  Senior Network PS Engineer

  Mob: +2019-0016211

  CCIE#24697 (Voice)

 Description: ccie_voice_large.gif

 

From: Bill [mailto:bill at hitechconnection.net] 
Sent: Monday, November 01, 2010 3:52 PM
To: Ahmed Elnagar; 'Sechaba Mokoena'
Cc: cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Outbound Calls from OCS to Cisco IP Phone

 

The MOC clients can communicate using G.711 without the need of a mediation
server but you have to configure them to do so. 

 

  _____  

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Ahmed Elnagar
Sent: Monday, November 01, 2010 8:42 AM
To: Sechaba Mokoena
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Outbound Calls from OCS to Cisco IP Phone

 

I think you will need a MS mediation server "as per Microsoft design" in
order to convert their codec "RT-Audio" to a codec that Cisco infrastructure
can understand.

 

 Best Regards;

  Ahmed Elnagar

  Senior Network PS Engineer

  Mob: +2019-0016211

  CCIE#24697 (Voice)

 Description: ccie_voice_large.gif

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Sechaba Mokoena
Sent: Monday, November 01, 2010 3:11 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Outbound Calls from OCS to Cisco IP Phone

 

Hi,

We're in the middle of a Microsoft OCS POC integrated with UCM 8.0. I can
make internal and external calls from OCS using UCM as my gateway, but calls
are dropped as soon as they're answered. Has anyone out there come across a
similar problem.

Kind regards,

Sechaba Mokoena

 

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original message. 

 

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