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From: mitel!Software!meier@uunet.uu.net (Rolf Meier)
Newsgroups: comp.dcom.telecom
Subject: Re: Weird Noises on Middle East Phone Circuits
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Date: 24 Jan 91 20:12:37 GMT
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X-Telecom-Digest: Volume 11, Issue 67, Message 4 of 11


In article <16327@accuvax.nwu.edu> slr@tybalt.caltech.edu (Steve L.
Rhoades) writes:

>These tones are in the 10 - 20 Khz range and are barely audible.
>There doesn't seem to be a set pattern, but they seem to occur about
>once every sixty seconds.  It's a series of about four different
>tones, all high-pitched, lasting about a second each.

How did you determine that they were in the 10-20 khz range?

I suspect anything higher than 3.4 khz originates on this side.  


Rolf Meier	Mitel Corporation