Rich Adamson wrote:
Been around asterisk for two-plus years, but need a little input from the
list on this topic.
Have a potential client that wants to replace their old key system with *,
but they want to integrate a commercial message service (they pay a monthly
fee to have special MOH messages generated) into their system. The messages
are essentially delivered to this customer via older generation audio
equipment that interfaces to their key system via a standard audio RCA jack.
(We're reseaching other alternative deliver mechanisms such as mp3's, etc,
from the supplier, but have to assume for now that we need to inject MOH
audio into asterisk via this RCA jack.)
Does anyone have a relatively high audio quanlity method of interfacing
such an external audio device into asterisk in a reliable way via an
RCA jack?
Rich,
First, you will need an RCA to 1/8" cable from Radio Shack or
something. Next, you will need a sound card in the machine. USB audio
interfaces are cool too (and they usually have a high SN ratio).
Then you need to setup a custom MOH class and use arecord:
http://linuxcommand.org/man_pages/arecord1.html
I haven't done this, but I was intrigued by your question and thought
I'd look into it. Let us know how it turns out!
The usb audio interface sounds very cool! Have you played with any
that has a line-in jack or have any specific device recommendations?
(Wondering now if such a device could be made to work as an asterisk
overhead paging system cabled to an amplifier, etc.)
Rich,
I had one a while back that worked fine. I think it was someting for a
mac called iMic by Griffin. It worked with ALSA under Linux.
P.S. - You need ALSA to use arecord anyways :).
Looking at the other posts, it really looks like this would be the
best, most direct solution...
--
Kristian Kielhofner
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