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Question about T1 FDL

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rainman

ISP
Joined
Mar 22, 2001
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186
Location
US
Hello,

I understand that a T1 circuit is broken up into 24 unique channels using TDM. The entire frequency spectrum is up to 1.5MHz which provides 24 unique channels of 56/64k in width.

My question is, regarding the FDL. Where is the FDL regarding frequencies on a T1? Is it part of the 24 channels, or outside it? Just curious how this works.


Thanks,

Rainman
 
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