Installation guide

MAJOR SYSTEM COMPONENTS
1.
Control unit: The control unit is the heart of the MERLIN system. It provides the
power and intelligence for all voice terminals as well as the connection between voice
terminals and outside lines. Program memory for the MERLIN system resides in the
control unit. The model number of the control unit determines its capacity:
●
Model 206 control unit has a capacity of 2 outside lines and 6 voice terminals.
●
Model 410 control unit has a capacity of 4 outside lines and 10 voice terminals.
●
Model 820 control unit has a capacity of 8 outside lines and 20 voice terminals.
1
Control
unit
5
Voice
3
terminal
2
AC outlet
Network
Jack field
interface
4
Modular jack
System Overview
2.
3.
Network interface: The network interface connects the control unit and the outside
lines. The two most common network interfaces are the one-line (RJ11) and two-line
(RJ14) interfaces. However, other network interfaces may be used (see the Installation
Guide: Models 206 and 410 and the Installation Guide: Model 820).
Jack field: The jack field provides the connections between the control unit and the
wiring to the voice terminals. The jack field may consist of either jack panel boxes or
modular jacks mounted near the control unit. (However, in some systems, the voice
terminals plug directly into the control unit using modular voice terminal cords and
extension cords.) Optional attachments (extra alerts, paging systems, etc.) may also
connect to the control unit through the jack field.
4