For MoH, you can have 51 audio sources. One of which can be a fixed audio source. The fixed audio source is an example of having an external audio device (e.g. satellite radio, ipod, etc.) that is hooked into a server. The server (moh server) is configured to stream that fixed audio source. I have not checked into this on CM 4.2, but have on appliance models (5x, 6x, 7x). The part number that you would need is:
MOH-USB-AUDIO=
This is a product that Cisco OEMs.
From a CM cluster perspective, there is only one fixed audio source allowed (it is source 51, btw). Though, different moh servers can host their own, local audio input. The audio inputs don't need to be the same, however the audio source that you would assign to a device or line would need to be 51 if you want to use the fixed audio source. The net effect, is that you couldn't provide diverse fixed audio sources per site using fixed audio input.
That being said, you have 50 other audio source files. You would need to create these as .wav files and upload them to your cluster. But the .wav files can have music, speech (i.e. "please hold and yada yada"), or a combination. So, you may be able to accomodate your requirement. It just depends on what the audio content is supposed to be.
HTH.
Regards,
Bill
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