AT&T MLC-6 Instruction Manual download pdf (Page 117)

Extension Jack

■ Ringing voltage: +5VDC, -140 VDC peak to peak; trapezoidal wave shaping

Specifications

■

35- to 38-Volt talk battery

■

Ringing frequency: 20 Hz

PAGE Jack

Draws current on inner wire pair

■

Specifications

Provides contact closure on outer wire pair

■

600 Ohm impedance

Environmental

■

Mount on a wall at least 2 feet (0.6 meters) from the floor (wall mounting required)

Requirements—

■

Locate within 5 feet (1.5 meters) of the network interface jacks and an electrical outlet not

Control Unit

controlled by a switch, using supplied 7-foot (2.1-meter) cords

■

Mount the Expansion Carrier at least 6" and not more than 24" away from the primary carrier

■

Operating temperature 32° to +104°F (0° to +40°C), not in direct sunlight

■

Humidity 15%–90%, noncondensing

■

For proper ventilation and easy replacement of modules, provide at least 6” (2.34cm) clearance

at the top and sides and 2 feet (0.6 meters) at the front and bottom of the control unit.

■

Locate in an area free of excess moisture, corrosive gases, dust, and chemicals

Electrical

■

90–130 VAC, 50–60 Hz, 3-prong outlet separate ground, separately fused at 15 Amps

Requirements

■

Outlet must not be controlled by an on/off switch

■

Grounding to comply with Underwriters Laboratories (UL) 1459:

A. An insulated grounding conductor that is not smaller in size and equivalent in insulation

material and thickness to the grounded and ungrounded branch circuit supply

conductors, except that it is green with or without one or more yellow stripes, is to be

installed as part of the circuit that supplies the product or system.

The grounding conductor mentioned in item A is to be connected to ground at the service

equipment.

The attachment-plus receptacles in the vicinity of the product or system are all to be of a

grounding type, and the grounding conductors serving these receptacles are to be

connected to earth ground at the service equipment.

Requirements for

Installation of a telephone or other standard (tip/ring) device in another building requires the

Out-of-Building

following In-Range Out-of-Building (IROB) protectors to protect the control unit and device from

Extensions

electrical surges:

■

MLS-model telephone: two AT&T 504A1 protectors

■

Standard device: one AT&T 504A1 protector plus one carbon block protector

Wiring

■

MLS-model phones: AT&T SYSTIMAX™ or at least 2-pair (4-wire) star (“home run” not “loop”)

■

Other standard telecommunications equipment (single-line phones, fax machines, answering

machines, etc.): 1-pair (2-wire) mounting cords (AT&T D2R mounting cords recommended)

■

Bridging adapter: AT&T 267F2

■

Range: 1,000 feet (305 meters) for MLS phones; 3,000 feet (915 meters) for standard devices

Primary Proc.

■

68000 microprocessor, 64K RAM, 256K ROM

Module

Specifications

Expansion Proc.

■

12 mHz, 128K RAM, 64K ROM

Module

■

Specifications

■

Local Phone ■

FCC registration number: AS5 USA-61630-KF-E

Company

■

REN (outside line jack): 0.9A per line jack

Information

■

Jack type: RJ11C

■ Loop start lines

C-2

Specifications

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AT&T MLC-6 Instruction Manual Page 117

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