[cisco-voip] regions, transcoders and bears, oh my!

Lelio Fulgenzi lelio at uoguelph.ca
Mon Jan 9 14:25:39 EST 2012


Yup. It is. If for whatever reason we need to change things, at least now I know how regions and transcoders interoperate. 

--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (ANNU) 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Cooking with unix is easy. You just sed it and forget it. 
- LFJ (with apologies to Mr. Popeil) 


----- Original Message -----
From: "Adam Frankel (afrankel)" <afrankel at cisco.com> 
To: "Lelio Fulgenzi" <lelio at uoguelph.ca> 
Cc: "Cisco VoIPoE List" <cisco-voip at puck.nether.net> 
Sent: Monday, January 9, 2012 1:46:01 PM 
Subject: Re: [cisco-voip] regions, transcoders and bears, oh my! 


As long as the default intraregion codec is set to G711, this should be fine. 
Adam 


From: Lelio Fulgenzi <lelio at uoguelph.ca> 
Sent: Mon, Jan 09, 2012 1:16:44 PM 
To: Adam Frankel (afrankel) <afrankel at cisco.com> 
CC: Cisco VoIPoE List <cisco-voip at puck.nether.net> 
Subject: Re: [cisco-voip] regions, transcoders and bears, oh my! 




OK, so if all three objects, the transcoder, the iPhone Jabber client, and the UCCx ports are all in the Default region, and I update the MRG(L) of the UCCx ports to include the transcoder, I should be OK then? 

--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (ANNU) 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Cooking with unix is easy. You just sed it and forget it. 
- LFJ (with apologies to Mr. Popeil) 


----- Original Message -----
From: "Adam Frankel (afrankel)" <afrankel at cisco.com> 
To: "Lelio Fulgenzi" <lelio at uoguelph.ca> 
Cc: "Cisco VoIPoE List" <cisco-voip at puck.nether.net> 
Sent: Monday, January 9, 2012 12:41:20 PM 
Subject: Re: [cisco-voip] regions, transcoders and bears, oh my! 


A transcoder will be required in the MRGL of the UCCX Port. 

The transcoder should have a device pool who's region relation to the UCCX Port is G711, and to the Jabber client it can be either G711 or G729. Since Region config only specifies the max bitrate between the two devices, if the Jabber client is only offering G729, a G711 region config will still allow the connection between the Jabber client and Transcoder to be G729. 

HTH, 
Adam 


From: Lelio Fulgenzi <lelio at uoguelph.ca> 
Sent: Mon, Jan 09, 2012 12:31:40 AM 
To: Cisco VoIPoE List <cisco-voip at puck.nether.net> 
CC: 
Subject: [cisco-voip] regions, transcoders and bears, oh my! 





OK, so in fooling around with the Cisco iPhone Jabber client, I've realized that I can put aside the concept of regions and transcoders no longer. The iPhone, when using g729 (in low bandwidth mode) can not communicate to some systems, most notably, IPCCx. 

As far as I understood, regions were used to dictate which codec to use and the transcoder is used to do the translations. 

So, what do I have to do to get the iPhone using G.729 to be able to talk to UCCx (presumably using G711)? 

Is a transcoder enough? If I create the transcoder and put it into an Media Resource Group that both devices can access, should that work? 

I don't understand how I would use regions to classify the iPhone Jabber client, especially since the iPhone Jabber client can dynamically select between codecs depending on bandwidth availability. 



--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (ANNU) 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Cooking with unix is easy. You just sed it and forget it. 
- LFJ (with apologies to Mr. Popeil) 




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