Setting The Control Unit; Mode 206 And 410 Control Units; Setting The Switches - AT&T MERLIN 820 Administration Manual

Setting the Control Unit

Your MERLIN system control unit connects lines from the telephone company and the individual voice terminals in your
business. The software in its cartridges lets you program features, and it can accommodate optional cartridges that pro-
vide still more features. Model 206 has two outside line jacks and six voice terminal jacks; Model 410 has four outside
line jacks and ten voice terminal jacks.
Read the following descriptions of the parts of the control unit, and study the diagram on the next page. When you are
ready to begin to set your control unit, complete the necessary steps described in "Setting the Switches," below. .
MODEL 206 AND 410 CONTROL UNITS
1.
Voice Terminal Jacks. The MERLIN system voice ter-
minals plug in here. The number of the jack gives the
intercom number of the voice terminal: for the Model 206
control unit, the jacks are labeled 0 through 5; for the
Model 410 control unit, the jacks are labeled 10 through &
19.
2.
Warning
Red Light. The MERLIN system constantly
checks itself for possible problems. If the red warning
light is on, there is trouble with the system. (See
"Isolating and Correcting Troubles," pages 18-19.)
3.
Power
Green Light. The green light should be on all the
time to indicate that the control unit is receiving electric
power.
4.
Ringing or Outward Calls Switches. These switches
control the ability of people in your MERLIN system to
make outside calls.

SETTING THE SWITCHES

To set your control unit, follow these steps:
1. If your lines have Touch-Tone service, set this switch to Tone. Otherwise, set it to Pulse.
2.
To permit voice terminals to place outside calls, set all Outward Calls switches to Yes (up). To prevent a particular
voice terminal from making outside calls, set the switch to No (down).
NOTE:
On some control units, these switches are labeled R and N. Ignore the R and N, and consider the up posi-
tion to be Yes and down to be No.
4
5.
Telephone Company Line Jacks. Your lines from the
telephone company plug in here. Line jacks on the
Model 206 control unit are labeled A and B; on the Model
420 control unit, the line jacks are marked A through D.
6.
Tone/Pulse Switch. For TouchTone service, this switch
is set to Tone. For rotary (dial pulse) service, it is set
Pulse.
7.
Cartridge Type I Slot. This slot accommodates feature
cartridges that offer custom features.
8.
Cartridge Type II Slot. In this slot you can place car-
tridges that provide the system with audio options such
as connections for Music-on-Hold and a loudspeaker
paging system.
9.
Cartridge Type III Slot. This slot accommodates car-
tridges that give the system line-associated options such
as connections for Extra Alert horns and bells and Power
Failure Transfer Telephones.
to