D/41H - Doesn't detect hang-up. (UK)

From: "Mircea Teodorescu" <mircea@mediateldata.com>

  Analog disconnect tones detection - cadenced tones.

  First of all you need to make sure on your particular analog lines you get busy tones, you can test this using a normal phone, so you know when you hang up for an incoming call you get cadenced audio tone.

  Then you can write a simple program, to perform a short VOX format file recording of about 30 seconds, you place a call, and get the sample of that particular audio busy tone. Then you may use Cool Editor as tool, to edit it, get the params out of it, basically frequency, tone on, tone off, then you may read in Dialogic Help about:

dx_bldstcad( ) - defines a user-defined single frequency cadenced tone
for using direct Dialogic Voice Library API, or CT-ADE documentation, for the equivalent part.

Mircea Teodorescu
VP - Mediatel Data USA, Inc

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Received on Sat Feb 21 14:38:10 2004