AT&T MERLIN LEGEND Service-Handbuch

AT&T

MERLIN LEGENDTM

Communications System

Pocket Reference

AT&T 555-610-141

Issue 1

Printed in U.S.A

August 1991

Ordering Information

To order copies of this document:

Call:

AT&T Customer Information Center on 800-432-6600;

In Canada, call 800-255-1242

Write:

AT&T Customer Information Center

2855 North Franklin Road

P.O. Box 19901

Indianapolis, Indiana 46219-1385

For assistance when installing or programming the system:

Call:

National Service Assistance Center (NSAC) at

800-628-2888 or your authorized AT&T dealer

Notice

While reasonable efforts were made to ensure that the information

in this document was complete and accurate at the time of

printing, AT&T can assume no responsibility for errors. Changes

or corrections to the information in this document maybe

incorporated into reissues.

Trademarks

Accunet is a registered trademark of AT&T.

AUDIX is a trademark of AT&T.

Definity is a registered trademark of AT&T.

Magic on Hold is a registered trademark of AT&T.

Megacom is a registered trademark of AT&T.

MERLIN is a registered trademark of AT&T.

MERLIN LEGEND is a trademark of AT&T.

MERLIN MAIL is a trademark of AT&T.

MLX-20L, MILX-10D, MLX-10, and MLX-28D are trademarks of

AT&T.

SYSTIMAX is a trademark of AT&T.

ERRATA

MERLIN LEGEND™ Communications System

Pocket Reference

555-610-141

Ignore all references to the

small

processor module. The MERLIN LEGEND™ Communication

System offers only one processor module. This processor module is referred to as a

large

processor

module in this document.

Page 2

Backboard Requirements:

References to “Small system” should read “One expanison carrier” and

references to “large system” should read “Two expansion carriers.”

Pages 7-13

Hardware and software Parameters Table:

Ignore the columns headed “Small.”

Page 14

Ordering Codes Table:

The following Price Element Codes are not valid:

Small (Analog) - 6141-CUA

Small (Digital) - 6141-CUD

Small (Digital) - 6141-24D

Page 15

Ordering Codes Table:

The following Price Element Code

(PEC)

is not valid:

Upgrade from Small to Large - 6140-USLA

Page 31

Memory Sizes:

Ignore reference to small processor module.

October 1, 1991

Table

Contents

Design Benefits

Environmental Requirements

Control Unit Interfaces

Network Interface Requirements

FCC Registration

DOC Registration

Hardware and Software Parameters

Ordering Codes

Control Unit Modules

Adjunct Summary

Uninterruptible Power Source (UPS) Backup Times

Power Supply Unit Load Requirements

■

Unit Load Calculation Rules

■

Unit Load Rating of System Modules

■

Unit Load Rating of System Lines,

Telephones, and Adjuncts

System Features

Telephone and Operator Console Features

Reference Documents

Design Benefits

Modular components

allow easy, cost-effective growth in both

size and function. For upgrades from the MERLIN® system family

of products, all analog MERLIN system telephones, as well as

wiring, can be reused. For upgrades from MERLIN II, certain

line/trunk and station modules can also be reused.

Menu-driven system programming

maintains the customer’s

command of business operations.

Built-in 1200-bps modem

allows fast access to the system by

customers, AT&T personnel, or authorized dealers from a remote

location for system programming and maintenance.

Flexible mode of operation

saves upgrade costs by allowing

system configuration in one of three modes: Key, Behind Switch,

and Hybrid/PBX.

Connectivity to other systems

in the Behind Switch mode

optimizes existing resources by permitting the system to work as

part of another MERLIN LEGEND™ Communications System,

System 25, System 75, System 85, Definity® 75/85, or other

communications systems. Also, the system control unit can

connect to another system’s control unit by using an off-premises

telephone (OPT) line, an analog tie trunk, or a digital tie trunk.

Digital 2.048-MHz bus

supplies a 64-kbps channel on each of

the 216 time slots.

68000 Motorola CPU

running at 10 MHz with zero wait states

provides fast system performance.

Memory data retention

saves time by ensuring that system and

station programming information is retained for 12 to 30 days,

depending on the system configuration, in case of power failure or

system shutdown.

Integrated voice and data capabilities

allow users to converse

while transmitting data at speeds up to 64 kbps.

DS1 interface

can be configured for connection of either T1 or

ISDN for basic call control with the AT&T 4ESS PRI service

specifications.

ISDN S/T BRI protocol

supports premier digital multiline

telephones (MLX) with superior display capabilities and supports

the ISDN 7500B Data Module for the connection of adjuncts.

Page 1

Environmental Requirements

Control Unit

Fully loaded basic carrier 45 lbs

14” W x 23” H x 12” D

Fully loaded 2-carrier 90 Ibs 25” W x 23” H x 12” D

Fully loaded 3-carrier 135 Ibs 37” W x 23” H x 12” D

Mean Time Between Failures

2.1 years

(mean or average time the

product/system is expected

to operate before any type of

failure occurs)

Mean Time Between Outages

4.0 years

(mean or average time the system

is expected to operate before a

failure affecting more than 25%

of stations or lines for more than

15 seconds occurs)

Backboard

Without

SYSTIMAX™

■

Small system

4’ W x 3’ H x 3/4” D

■ Large system

6’ W x 3’ H x 3/4” D

With SYSTIMAX

■

Small system

5’ W x 4’ H x 3/4” D

■ Large system

7’ W x 4’ H x 3/4” D

Backboard Mounting Hardware Requirements

Wood surface

Wood screws

Concrete surface, brick, cinder block Masonry anchors

Plaster, plasterboard

Toggle bolts

Sheet-metal surface Sheet-metal screws

■

Hardware should have a combined pullout force of 650 Ibs.

■

When mounting to sheet-metal walls, attach to structural

members.

Location

■

Within 5 ft of dedicated AC power outlet (1 plug per carrier)

■

Within 1000 cable feet of telephones

Heat Dissipation

Fully loaded basic carrier

500 Btu/hr

Fully loaded 2-carrier 1000 Btu/hr

Fully loaded 3-carrier 1500 Btu/hr

Power Requirements

Basic carrier 117 VAC

60 Hz ± 5% 3A

2-carrier 117 VAC

3-carrier 60 Hz ± 5% 6A

117 VAC

60 Hz ± 5% 9A

Page 2

Environmental Requirements

(continued)

Temperature Humidity Range

40°–104°F; 4–40°C (optimum temperature 60°F)

20%-80% relative humidity

Ventilation

1” on left side; 1” on right side; 12” above; 12” below

Cautions

■

Do not use switch control on AC outlet for control unit.

■

Use approved ground (AC receptacle for 3-prong plug).

■

Do not install control unit outdoors.

■

Do not place control unit near extreme heat (furnaces, heaters,

attics, or direct sunlight).

■

Do not expose control unit to devices that generate electrical

interference (such as arc welders or motors).

■

Do not place anything on top of carriers.

■

Do not install control unit under any device that may drip fluid,

such as an air conditioner.

Page 3

Control Unit Interfaces

Signaling

Audio/

Channel

Data

Interface

Applications

Rate Rate

ISDN-BRI

Digital switch to MLX 16 kbps

S/T*

telephones (D);

64 kbps

(B)

Digital switch to ISDN

64 kbps

7500B Data Module (B and D)

DS1

Switch to the

64 kbps

following services

■

— Emulated tie

trunk, loop-start,

and ground-start

■

ISDN-PRI services

Accunet®

switched

digital service,

Megacom®

WATS,

Megacom® 800,

Software Defined

Network (SDN)

RS-232C

Switch to PC

2400 bps

2400

connected to system

bps

programming

1200 bps

RS-232C port

1200

bps

Switch to AT&T model 1200 bps

1200

572 printer, PC

bps

with CAS, or CAT

connected to

RS-232C port

Call handling derived from CCITT recommendation Q.931

Page 4

Control Unit Interfaces

(continued)

Signaling

Audio/

Channel

Data

Interface

Applications

Rate Rate

ATL

Digital switch to

40 kHz

300-

analog multiline

3400 Hz

telephones

Network Interface Requirements

Facility Interface Network

Line/Trunk Type

Code

Interface

Loop-start 02LS2

RJ11C, RJ14C,

RJ21X

Ground-start

02GS2

RJ11C, RJ14C,

RJ21X

Direct Inward

02RV2-T RJ11C, RJ14C,

Dialing

RJ21X

Off-premises 0L13C

RJ11C, RJ14C

telephone

Tie line TL31M

RJ2GX

04DU9-B

RJ48C/X

04DU9-C

ISDN-PRI

04DU9-B

RJ48C/X

04DU9-C

Page 5

FCC Registration

Registration Number REN Type

AS593M-72682-MF-E 1.5A Multi-function

AS593M-72914-KF-E

1.5A

Key only

DOC Registration

DOC Certification No. CSA Certification No.

230-4095A LR-56260

Load No.

Page 6

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