On 04/02/2012 03:18 AM, Anita Hall wrote:
Hi
I suspect that my telco set-up is acting funny and I want to use
spectral analysis to confirm the culprit :)
What is the best way to generate Fax tones from a dialplan and then
record them at the other end? Also, where can I get a list of the all
the tones and duration which are used in Fax.
There are two primary tones used during FAX transaction setup: CNG and
CED. Everything else used is modem signaling, which while technically is
composed of tones, can't be simulated using a simple tone generator.
The PlayTones() dialplan application in Asterisk can be used to generate
these tones.
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Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
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445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at www.digium.com & www.asterisk.org
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