Talkswitch 48-CA/CVA, 24-CA manual M E / O F F I Ce W I R I N G G U I D E

A P P E N D I X H

H O M E / O F F I CE W I R I N G G U I D E

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

Incoming

telephone lines

Phone jack

Demarcation point Loop 1

A P P E N D I X H 2 1 3