AT&T 518-600-016 Accessories described here, Alerter Accessories. Devices such as a horn, bell

SYSTEM	Figure 1-8shows several of the MERLIN II system
ACCESSORIES	accessories described here.
	●	Alerter Accessories. Devices such as a horn, bell,
		strobe, or chime can be connected to a Supplemental
		Alert Adapter so that people working in noisy or
		remote areas of a building can be alerted to incoming
		calls.
	●	Attendant Intercom Selector. Can be attached to a

34-Button Deluxe voice terminal when a MERLIN system has more than eight lines or more than 20 voice terminals. A system attendant can use the selector’s 30 buttons to access up to 120 Auto Intercom numbers. The light beside each button indicates whether a voice terminal or basic telephone is busy and whether a voice terminal’s message light is on.

● Auxiliary Power Unit. This unit must be added to the control unit if the total number of voice terminals and voice terminal accessories (including Hands-Free Units and Headset Adapters) is greater than the control unit’s power capacity. The control unit supports up to 45 unit loads, and each Auxiliary Power Unit adds 20 unit loads to the system.

● Basic Telephone and Modem Interface. The BTMI connects telephones and data communications devices such as autodialers, answering machines, cordless telephones, facsimile machines, and modems to the MERLIN II system. A timer may be connected to a BTMI for automatic answering based on time of day.

The BTMI is no longer available, having been replaced by the BTMI-2. The BTMI supports more features than the BTMI-2, however, including the Conference and Drop features, and line selection. For customers who already have the BTMI, it can be used with MERLIN II systems with Feature Module 1, Feature Module 2, and Release 3.

System Hardware 1-31