Installation guide

OPTIONAL EQUIPMENT

In addition to the essential components of the MERLIN communications system, several

different accessories may be connected to voice terminals or the control unit.

Optional Voice Terminal Accessories

Hands-Free Units, Headset Adapters, and Manual Multipurpose Adapters can be connected

directly to the underside of the voice terminal as illustrated below. An externally connected

Voice Terminal Power Supply can also be added.

Line jack: Connects to control unit

via modular voice terminal cord.

This jack is not to be used for

voice terminal accessories.

“Other” jack: Connects to

optional voice terminal accessories

described in this section via a

special voice terminal accessory

cord (blue tips). This jack is

usually covered by an adhesive-

backed paper label.

Hands-Free Unit (HFU)

The Hands-Free Unit provides speakerphone capability; making it possible to place and

receive outside and intercom calls without using the voice terminal handset. The HFU, shown

below, can be used with 10-button or 34-button voice terminals.

Voice terminal accessory cord:

Connects to “Other” jack on voice

terminal.

Speakerphone light: Lights when

speakerphone is in use.

Speakerphone switch: Turns unit

on and off.

Microphone light: Goes on when

microphone is in use.

Volume control

Microphone switch: Turns

microphone on and off for “mute”

function.

CIB 2864