[cisco-voip] video conferencing resources for 8945, 9951, 9971 phones

Jason Burns burns.jason at gmail.com
Wed May 2 16:21:21 EDT 2012


Check out this link:

http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/feature/guide/Video-trans-conf.html#wp1054259

You have to know your endpoints and what frame and bit rates they support.

http://en.wikipedia.org/wiki/Common_Intermediate_Format

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/phones/ps10451/ps11158/data_sheet_c78-649595.html

8945 - 640x480 @ 30fps (VGA)

9951 - also VGA

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/phones/ps10453/ps10513/data_sheet_c78-565680.html

So you can get away with a homogeneous conference profile if that's all
you're going to have. If you want to support some people in the conference
at higher rates you'd want to go with the homogeneous setup. The doc
explains the limits / benefits of each.

There are some really good tables in the first link to that explain the
different formats. I don't know if I can easily summarize it!

-Jason

On Wed, May 2, 2012 at 3:23 PM, Lelio Fulgenzi <lelio at uoguelph.ca> wrote:

>
> I'd like to ensure (or at least try to ensure) that I have at least one or
> two video conferencing resources for a batch of 8945s and 9951s/71s that I
> have available for testing.
>
> The options for video conferencing resources on the DSP calculator are
> quite vast (for someone who has no experience in video).
>
> Anyone have any suggestions for the parameters?
>
> Conference Type:Homogeneous (1 Class) /Heterogeneous (2,3,4 Classes)
>
> Video Capabilities: H.264 XXX /H.263 XXX
>
> Types: ?
>
> I'm guessing I could just check off all the video capabilities of the
> phones, but not sure what the classes are for.
>
> Would I need Video transcoders for this? Can I assume they'll all talk the
> same?
>
> ---
> 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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>
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