[asterisk-users] Require a Type 102 milliwatt number
Jay R. Ashworth
jra at baylink.com
Wed May 28 09:26:44 CDT 2008
On Tue, May 27, 2008 at 08:42:58PM -0500, Lyle Giese wrote:
> The sampling rate on a T1 for a DS0 is 8kHz and 1kHz is a harmonic of 8kHz
> and harmonic distortion can cause significant measurement errors. So early
> on engineers tuned the test frequency to be slightly off to keep harmonic
> distortion to a minimum when taking loss measurements.
See? There's a really *good* reason it's not 1kHz, exactly.
So, having it be exactly 1kHz can make it useless (actually, worse than
useless -- actively harmful) for precisely the purpose you need it for:
measuring things on T-1s.
Cheers,
-- jra
--
Jay R. Ashworth Baylink jra at baylink.com
Designer The Things I Think RFC 2100
Ashworth & Associates http://baylink.pitas.com '87 e24
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