Although often used interchangably, and rightly so, technically DS-3 or
Digital Signal-3 is different than T-3 or T-Carrier-3. A DS-3 channel is
comprised of seven DS-2 channels, which is comprised of four DS-1s, which is
24 DS-0s....so.....
DS-0 = 64K x24 =
DS-1 = 1.536M (1.544M w/T-carrier overhead) x2 =
DS-2 = 3.072M (3.152M w/T-carrier overhead) x7 =
DS-3 = 43.008M (44.736M w/T-carrier overhead)
There is also a DS-1C, which is two DS-1s, but this is rarely seen anymore.
In fact, These values are dependant on the Mux hierarchy of telco's
T-carrier Mux networks, the strict sense of this terminology being largely
obsolete, depending on how new thier stuff is. Hense DS-3 and T-3 being used
interchangably.
Cheers,
Lance
>From: "nsamuel" <[EMAIL PROTECTED]>
>Reply-To: "nsamuel" <[EMAIL PROTECTED]>
>To: "Cisco Group Study" <[EMAIL PROTECTED]>
>Subject: T3 and Ds3
>Date: Wed, 27 Dec 2000 17:55:24 -0500
>
>Is there a difference in a T3 and DS3, or is this just termilogy?
>
>Nigel
>
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