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

Tue Nov 2 04:00:14 EDT 2010

Hi all,

I managed to route calls from OCS by changing call classification on my OCS Trunk to off-net and changing the MTP Preferred Originating Codec to 711alaw. Thanks for all the help, hopefully this info will be useful in the future.

Kind regards,

Sechaba Mokoena

On 01 Nov 2010, at 5:21 PM, "Haas, Neal" <nhaas at co.fresno.ca.us> wrote:

> We had the Mediation server all working, make a SIP trunk to it (sorry lost or deleted my reference URL). We had the biggest issues, the thing would just stop working. We could make calls, receive calls, then it would just stop working. After a day or so it would start to work again and after a few calls it would stop excepting new calls.
> 
>  
> 
> Cisco pointed at Microsoft, Microsoft pointed at cisco. Even had Microsoft fly down to work on it………Finally just took it all out. Either go all Microsoft or go all cisco. They really are competing products
> 
>  
> 
> Neal
> 
>  
> 
> 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 7:47 AM
> To: 'Matt Slaga (US)'; 'Ahmed Elnagar'; 'Sechaba Mokoena'
> Cc: cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] Outbound Calls from OCS to Cisco IP Phone
> 
>  
> 
> According to what I am told by the MS Rep it will do “pass through” or something similar so you don’t need the mediation server anymore. If you have remote sites that have a mix of the MOC client and IP phones you do not need a mediation server local to the site anymore and the media is direct between the end points.
> 
>  
> 
> From: Matt Slaga (US) [mailto:Matt.Slaga at us.didata.com] 
> Sent: Monday, November 01, 2010 9:45 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
> 
>  
> 
> Not with OCS.  The media path will never be directly from the IP phone to a MOC client directly.  It will always traverse the Mediation Server.  What it will do, however, is in certain cases G711 will pass through un-transcoded.  You can see this in mediation server traces and client traces.
> 
>  
> 
>  
> 
>  
> 
> From: Bill [mailto:bill at hitechconnection.net] 
> Sent: Monday, November 01, 2010 10:38 AM
> To: Matt Slaga (US); 'Ahmed Elnagar'; 'Sechaba Mokoena'
> Cc: cisco-voip at puck.nether.net
> Subject: RE: [cisco-voip] Outbound Calls from OCS to Cisco IP Phone
> 
>  
> 
> 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)
> 
>  
> 
>  
> 
> 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)
> 
>  
> 
>  
> 
> 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)
> 
>  
> 
>  
> 
> 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
> 
>  
> 
> Disclaimer: NOTICE The information contained in this message is confidential and is intended for the addressee(s) only. If you have received this message in error or there are any problems please notify the originator immediately. The unauthorized use, disclosure, copying or alteration of this message is strictly forbidden. Raya will not be liable for direct, special, indirect or consequential damages arising from alteration of the contents of this message by a third party or as a result of any malicious code or virus being passed on. Views expressed in this communication are not necessarily those of Raya.If you have received this message in error, please notify the sender immediately by email, facsimile or telephone and return and/or destroy the original message.
> 
>  
> 
> Disclaimer: NOTICE The information contained in this message is confidential and is intended for the addressee(s) only. If you have received this message in error or there are any problems please notify the originator immediately. The unauthorized use, disclosure, copying or alteration of this message is strictly forbidden. Raya will not be liable for direct, special, indirect or consequential damages arising from alteration of the contents of this message by a third party or as a result of any malicious code or virus being passed on. Views expressed in this communication are not necessarily those of Raya.If you have received this message in error, please notify the sender immediately by email, facsimile or telephone and return and/or destroy the original message.
> 
>  
> 
> Disclaimer: NOTICE The information contained in this message is confidential and is intended for the addressee(s) only. If you have received this message in error or there are any problems please notify the originator immediately. The unauthorized use, disclosure, copying or alteration of this message is strictly forbidden. Raya will not be liable for direct, special, indirect or consequential damages arising from alteration of the contents of this message by a third party or as a result of any malicious code or virus being passed on. Views expressed in this communication are not necessarily those of Raya.If you have received this message in error, please notify the sender immediately by email, facsimile or telephone and return and/or destroy the original message.
> 
> Disclaimer: This e-mail communication and any attachments may contain confidential and privileged information and is for use by the designated addressee(s) named above only. If you are not the intended addressee, you are hereby notified that you have received this communication in error and that any use or reproduction of this email or its contents is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by replying to this message and deleting it from your computer. Thank you.
> 
> Disclaimer: This e-mail communication and any attachments may contain confidential and privileged information and is for use by the designated addressee(s) named above only. If you are not the intended addressee, you are hereby notified that you have received this communication in error and that any use or reproduction of this email or its contents is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by replying to this message and deleting it from your computer. Thank you.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20101102/0507306f/attachment.html>