FTN typical drawing (D&D)
DR FTN (D&D) 026
Typical Configuration Showing Successive and Adjacent Feeding of SPTs
Issue 3 · FTN D&D specs & typical drawings
What the drawing shows
How signal post telephones are fed along a copper section: successive feeding down the cable versus adjacent feeding from a cabinet, with 2-pair tails.
Typical drawings are a starting point: the project design, the site survey and the current standards decide what is actually built.