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If
Each outside line
has a dial tone
A line does not
have a dial tone
And
The jack for that line at
the network interface is
a 1-line (RJ11-type) jack
The jack for that line at
the network interface is
a 2-line (RJ14-type) jack
with a 2-line adapter
The jack for that line is
in the jack field
Do This
Go on to the next procedure,
"Mounting the Control Unit."
Have the local telephone company
check the line and the network
interface. Meanwhile, go on to the
next procedure, "Mounting the
Control Unit," and continue with
the installation.
Replace the adapter with a new
one, and test again for a dial tone.
If the problem remains, have the
local telephone company check the
line and the network interface.
Meanwhile, go on to the next
procedure, "Mounting the Control
Unit," and continue with the
installation.
Check the wiring run from the jack
in the jack field to the connector at
the network interface and fix any
loose connections. If the problem
remains, have the local telephone
company check the line and the
network interface. Meanwhile, go
on to the next procedure,
"Mounting the Control Unit," and
continue with the installation.
MOUNTING THE CONTROL
Control Unit Location
The control unit is designed to be mounted on a wall
UNIT
in an environment that meets certain requirements for proper operation. (See
Figure 4.) Check that the following environmental and measurement
requirements are met before proceeding:
Warning Do not install the control unit in areas that may be exposed
to water leakage or accidental spills of liquids. In the event that
liquids come in contact with the control unit, turn off and unplug the
unit and contact your AT&T technician immediately.
●
The control unit is within 5 feet of a grounded ac power source.
NOTE: If the outlet is not properly grounded, install an 18-gauge (or
thicker) wire from the ground lug on the control unit to the building
ground. For more information on grounding and grounding tests, see
Appendix C: Grounding Requirements."
In areas of the country with frequent lightning or severe transient voltage,
you may also want to provide external protection to the control unit with
an ac surge suppressor at the wall power source. You can combine both ac
and CO line surge protection with the 147A Protector, installed as
described in CIB 3109.
●
The control unit is within cord length of the network interface provided by
the local telephone company. Cord lengths are 7, 14, and 25 feet. Also,
up to 400 feet of DIW cable can be used to connect the network interface
to the control unit.
6
Step 1: Installing the Control Unit