[cisco-voip] Streaming multicast audio source to an IP phone

[Robert Kulagowski]

On Tue, Apr 24, 2012 at 3:17 PM, Tim Reimers <treimers at ashevillenc.gov> wrote:
>
> Hi everyone-
>
>
>
> I’m researching how to possibly do something with IP phones and multicast—
>
>
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> We want to stream audio from meetings in a very plug-and-play
> user-friendly way,
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> to IP phones and also PCs on the network.
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>
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> I will be locating some type of hardware that can be connected to the line
> out of an audio system to pick up the audio, and provide a
>
> multicast stream.
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> The multicast stream will NOT be coming from an IP phone –
>
> It will be something like a PC with VLC loaded on it, or with proof of
> concept to get some funding, I might use a VBrick or something like that.

If you check the archives for my name, you'll see that I implemented
something similar a few years back, and made a "Town Hall Conference"
as a service button for our users. The service goes to a php script
that sends back the XML required to join the multicast group. I
included the code in my message.

Since we were using it for a conference bridge, we had certain 7970's
join as transmitters, and the rest as receivers.

If you're looking for dedicated hardware to encode, take a look the
ExStreamer and the Annunicom from Barix - they're in the low hundreds,
and some can be powered via PoE.