A P P E N D I X H 2 1 3
Basic residential phone wiring
Looped wiring
Loop wiring is common in most residential houses. The demarcation point
(see page 2) breaks the incoming phone lines into ‘loops’ that can run the
length of the entire house, but are often broken into smaller loops that
serve different areas of the house.
All houses have at least one phone line, however it is also common to have
two or more incoming phone lines. Whether you are wiring single, dual or
multiple lines, you will still be using phone cord with four wires. How each
phone jack is wired to the loops will determine if the phone jack is on
Line 1 or Line 2.
This document describes single- and dual-line wiring configurations. Many
of the processes can also be applied to multi-line wiring.
Residential Building
Loop 2
Loop 1
Incoming
telephone lines
Demarcation point
Phone jack
A P P E N D I X H
A P PE N D I X H : H O M E / O FF I CE W I R I N G G U I D E
H O M E / O FF I CE W I R I NG G U I D E
