From: Peter (g4bbu@whittle-systems.demon.co.uk)
Date: Wed Nov 06 2002 - 18:57:23 GMT-3
Charles,
There are 8000 per second. In the Telco world everything is keyed into
voice requirements. Speech needs some 3 - 4 kilohertz bandwidth, Nyquist
theorem states that you need to sample at atleast twice the highest
frequency => you need 8000 samples per second.
This applies to DS0, (8000 x 8bits = 64 k), DS1, DS3, STM-1 (OC3), STM-
4, STM-16, or even STM-64 (10 GBits/S).
There are always 8000 frames per second, what changes as you go up the
higher-archie in speed is the size of the frame.
Hope this helps
Peter
In message <MOENKIKMFEOHGBMMOGLPIEBECJAA.routing@icharles.no-ip.com>,
Charles Huang <routing@icharles.no-ip.com> writes
>All,
>
>I know that there are 8000 DS1 frames per second.
>Does anybody know how many DS3 frames are there per second?
>
>
>Thanks
-- Peter
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