AT&T MERLIN 820 Installation Manual page 5

Become familiar with the MERLIN system.
Review the drawing of a simple MERLIN system configuration, opposite
page, and note how components are related to one another.
1
The control unit and the cartridges and modules it contains pro-
vide the power and the intelligence for all voice terminals and
accessories.
2
Modular jumper cords connect the control unit to jacks in the jack
field.
3
The jack field serve as an interface between the control unit and
the building wiring.
4
Building wiring ties the whole system together, connecting the
voice terminal locations to the control unit location.
5
Modular wall jacks connect the voice terminals to the building
wiring.
6
Modular voice terminal cords connect the voice terminals to the
modular wall jacks.
7
Voice terminals provide telephone functions and access to the
advanced features in the control unit.
8
The network interface, shown here extended to the jack field, pro-
vides the connection to the local telephone company lines.
9
Line cords connect the control unit to the network interface or, as
shown, to the jacks in the jack field for the outside telephone lines.
10
The ac outlet is the electrical power source for the control unit.
Modular jumper cords are identical to modular voice terminal
NOTE:
cords. They have different names in this guide to reflect their different func-
tions and locations in the system.
4
Make sure your system wiring is in place.
You must have wiring that connects your voice terminal locations to your
control unit location. If your voice terminal locations are close enough to
your control unit to make direct connection practical, you are probably plan-
ning to connect your voice terminals directly to the control unit with modular
voice terminal cords and, if necessary, modular voice terminal extension
cords. If you are planning to connect your voice terminals directly to the
control unit, this guide tells you how to do so at the appropriate place in
the installation sequence.
If conditions at your business make direct connections between your voice
terminal locations and your control unit location impractical, then you have
connected the locations through the building wiring. You may have had
the necessary wiring professionally installed, or perhaps you did the wir-
ing yourself following the instructions that came with the Wiring Installa-
tion Kit. In either case, you should now have building wiring that runs from
the voice terminal locations to the control unit location. The wiring runs
should end in modular wall jacks at the voice terminal locations and in a
group of jacks mounted in jack panel boxes (the "jack field") at the con-
trol unit location. Inside the right door (the one with the handle) of each
jack panel box you should find a label indicating the wiring run number
and endpoint location (for example, "w1 Reception area") for each jack
in the jack field.