Installation guide

Physical Features of the Model 206 and 410 Control Units (Model 410 is pictured)
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Voice Terminals jacks: Jacks labeled 0 through 5 (Model 206) or 10 through 19 (Model
410) accommodate MERLIN system voice terminals.
Warning light (red): Comes on momentarily when the ac power cord is first plugged in.
If the warning light remains on, it can also indicate trouble.
Power light (green): Remains on to indicate that the ac cord is plugged in.
Option switches: For systems with standard features, set the switches labeled Ringing
to Yes to alert users of incoming calls or No so users are not alerted. With Feature
Package 1, an Outward Calls label is placed over the Ringing label. In this case, the
switches are set to Yes if the user can make outside calls, and to No if the user cannot.
With Feature Package 2, an Admin/Normal-Toll Prefix/Area Code label is placed over the
Ringing label. When the system is administered, the Admin/Normal switch is set to
Admin. The Toll Prefix/Area Code switch sets the system to expect a prefix “1” or “0”
before the area code on long-distance calls, or just the area code alone.
Tel. Co. Lines jacks: Jacks labeled A and B (Model 206) or A through D (Model 410)
provide connections for outside lines.
Tone/Pulse switch: Set to Tone for Touch-Tone service, and set to Pulse for rotary (dial
pulse) service.
Cartridge Type I slot: Accommodates feature packages that offer custom features (for
more information see page 10). Without a feature package the system has standard
features, as described in the standard features user’s guide.
Cartridge Type II slot: Accommodates cartridges that provide the system with audio
options such as connections for Music-on-Hold and paging systems (for more information
see page 11).
Cartridge Type III slot: Accommodates cartridges that give the system line-associated
options such as connections for Extra Alert Horns and Power Failure Transfer
Telephones (for more information see page 12).
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