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Before You Start
Before installing any equipment, be sure the correct system wiring is in place.
This includes wiring to connect outside lines from the local telephone company
to system modules, and wiring connecting the telephones and other equipment
to system modules. To have an AT&T service technician install and customize
your system or change existing wiring, call 1 800 247-7000 (in the continental
U.S. only) or call your local AT&T Authorized Dealer.
Check for Outside Lines
Make sure the local telephone company has installed the outside lines for the
system. Each outside line must be connected through an RJ11 network
interface jack. These jacks are ordinary modular wall jacks, and should be
labeled with the telephone number for each outside line (see Figure C-1). If
there are no network interface jacks, call your local phone company. If two
numbers are assigned to one RJ14 jack, have the phone company split the lines
so that each line has its own RJ11 jack,* or use a 267C two-line adapter.
The network interface jacks must be within 5 feet (1.5 meters) of the system
module(s). If they are not, arrange for the local phone company to move them,
or for a qualified telephone installer to do the wiring. This requires special
expertise and tools. To arrange for AT&T service, call 1 800 247-7000 (in the
continental U.S. only) or call your local AT&T Authorized Dealer.
System Modules
5 feet
(1.5 meters)
maximum
555 1343
555 1344
Network
Interface
Jacks —
Outside Lines
555 1345
from Phone Company
(one line per jack)
555 1346
Figure C-1. Network Interface Jacks
✽
An RJ11 network interface is a technical term for a modular plug when only one line comes into it. An RJ14
network interface is a technical term for the same modular plug when two lines come into it.
C-2 Installation