AT&T Network Adapter 25 Handbuch

AT&T

AT&T System 25

Installation and

Maintenance Manual

555-540-103

November 1995

Printed in USA

TO ORDER COPIES OF THIS DOCUMENT REFER TO DOCUMENT NUMBER

555-540-103

Contact: Your AT&T sales representative, or

Call: 800-432-6600, Monday through Friday between 7:30 am

and 6:00 pm EST, or

In Canada call: 800-255-1242

Write: AT&T Customer Information

2855 North Franklin Road

P.O. Box 19901

Indianapolis, Indiana 42619

Every effort was made to ensure that

complete and accurate at the time of

subject to change. This document will

changes.

Center

the information in this document was

printing. However, this information is

be reissued periodically to incorporate

Installation and Maintenance Manual

Prepared by System 25

Document Development Group and the

AT&T Documentation

Management Organization

DANGER

Do not open the fan assembly or remove rear cabinet cover before

unplugging the cabinet from the electrical outlet. Wait at least five

minutes after unplugging the power cord before removing the rear

cover or power supply. The AT&T System 25 cabinets are not user

serviceable. Some voltages inside the cabinets are hazardous.

This equipment is to be serviced only by qualified technicians.

CUSTOMER WARNING

The Installation and Maintenance Manual is designed for use by

qualified service technicians only. Technician qualification includes

completion of an AT&T hands-on instructor-led course covering

installation and maintenance for this product. The use of these

documents by anyone else might void the warranty. Hazardous

electrical voltages are present inside this product.

SERVICE TECHNICIAN WARNING

1. Never install telephone wiring during a lightning storm.

2. Never install telephone jacks in wet locations unless the

is specifically designed for wet locations.

3. Never touch uninsulated telephone wires or terminals un

jack

less the

telephone line has been disconnected at the network interface.

4. Use caution when installing or modifying telephone lines.

THE FOLLOWING SYMBOLS AND PICTOGRAPHS

APPEAR ON THE EQUIPMENT

SYMBOL

The exclamation point

within an equilateral

triangle is intended

to alert the user to

the presence of

important operating

and maintenance

(servicing) instructions

ELECTRICAL SHOCK

Warns of the danger

of electrical shock

from hazardous voltages

present within the

control unit

Warns of the risk of

fire if the air filter

is not in place

FCC NOTIFICATION AND REPAIR INFORMATION

AT&T SYSTEM 25

This telephone equipment is registered with the Federal Communications

Commission (FCC) in accordance with Part 68 of its Rules. In compliance with

the Rules, be advised of the following:

MEANS OF CONNECTION

Connection of this telephone equipment to the nationwide telecommunications

network shall be through a standard network interface USOC RJ21X jack.

Connection to private line network channels requires USOC RJ2GX jack for tie

lines or USOC RJ21X jack for off-premises station lines. Connection to T1

facilities requires USOC RJ48X or RJ48C jack. These can be ordered from your

telephone company.

NOTIFICATION TO THE TELEPHONE COMPANY

If the system is to be connected to off-premises stations (OPSs), you must notify

the telephone company of the OPS class of service, OL13C, and the service

order code, 9. OF. For R3 systems, the Analog service order code is 9.0Y, the

Digital service order code is 6.0Y.

Upon the request of the telephone company, inform them of the following:

— The Public Switched Network “lines” and the Private “lines” to which

you will connect the telephone equipment.

— For private line connections, provide the facility interface code, TL31M

for tie lines. You must also specify the service order code, 9.0F or 9.0Y

for R3 systems.

Customer instructions will advise the customer to provide the telephone

company with the registration number (either -MF or -KF, depending on

the application of the system) and the ringer equivalency number (REN)

from the label on the equipment. In addition, customer will be advised

that certification in writing may be required when an existing

multifunction system is being reconfigured as a Key system, if the

customer desires the lower rate.

— For Digital connections with D4 Framing Format provide the Facility

interface code 041DU9-B, for digital connections with Extended Framing

Format, provide the Facility interface code 04DU9-C. You must also

specify the service order code, 6.0Y.

— The quantities and USOC numbers of the jacks required.

— For each jack, provide the sequence in which lines are to be connected;

the type lines and the facility interface code and the ringer equivalence

number by position, when applicable.

This telephone equipment should not be used on coin telephone lines.

Connection to party line service is subject to state tariffs.

REPAIR INSTRUCTIONS

If you experience trouble with this telephone equipment, contact the AT&T

Business Customer Service Center on 1-800-242-2121. The telephone company

may ask that you disconnect this equipment from the network until the problem

has been corrected or until you are sure that this equipment is not

malfunctioning.

System 25 troubles that must be escalated to a higher level of maintenance

should be referred to the National Service Assistance Center on 1-800-628-2888.

RIGHTS OF THE TELEPHONE COMPANY

If your telephone equipment causes harm to the telephone network, the

telephone company may discontinue your service temporarily. If possible, they

will notify you in advance. But if advance notice isn’t practical, you will be notified

as soon as possible. You will be informed of your right to file a complaint with the

FCC.

Your telephone company may make changes in its facilities, equipment,

operations, or procedures that could affect the proper functioning of your

equipment. If they do, you will be notified in advance to give you an opportunity

to maintain uninterrupted telephone service.

HEARING AID COMPATIBILITY

The voice terminals described in this manual are compatible with inductively

coupled hearing aids as prescribed by the FCC.

FCC INFORMATION

FCC REGISTRATlON lNFORMATlON

Registration Number AS593M-71565-MF-E

Ringer Equivalence

0.5A

Network Interface RJ21X, RJ2GX or RJ48X

PRIVATE LINE SERVICE

Service Order Code

● Analog

9.0F

● Analog (R3)9.0Y

●Digital (R3)

6.0Y

Facility Interface Code

●Tie Lines TL31 M

● Off-Premises Stations OL13C

● Digital D4 Framing 04DU9-B

●Digital ESF 04DU9-C

November 1995

FCC WARNING STATEMENT

Federal Communicatlons Commission (FCC) Rules require that you be notified of

the following:

This equipment generates, uses, and can radiate radio frequency energy and, if

not installed and used in accordance with the instruction manual, may cause

interference to radio communications.

It has been tested and found to comply with the limits for a Class A computing

device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to

provide reasonable protection against such interference when operated in a

commercial environment.

Operation of this equipment in a residential area is likely to cause interference

in which case the user at his or her own expense will be required to take

whatever measures may be required to correct the interference.

SECURITY OF YOUR SYSTEM-PREVENTING TOLL FRAUD

As a customer of a new telephone system, you should be aware that there exists

an increasing problem of telephone toll fraud. Telephone toll fraud can occur in

many forms, despite the numerous efforts of telephone companies and telephone

equipment manufacturers to control it. Some individuals use electronic devices

to prevent or falsify records of these calls. Others charge calls to someone else’s

number by illegally using lost or stolen calling cards, billing incorrect parties,

clipping on to someone else’s line, and breaking into someone else’s telephone

equipment physically or electronically. In certain instances, unauthorized

individuals make connections to the telephone network through the use of remote

access features.

The Remote Access feature of your system, if you chose to utilize it, permits off-

premises callers to access the system from a remote telephone by using an 800

number or a 7- or 10- digit telephone number. The system returns an

acknowledgement signaling the user to key in his or her authorization code,

which is selected and administered by the system manager. After the

authorization code is accepted, the system returns dial tone to the user. If you do

not program specific egress restrictions, the user will be able to place any call

normally dialed from a telephone associated with the system. Such an off-

premises network call is originated at, and will be billed from, the system location.

The Remote Access feature, as designed, helps the customer, through proper

administration, to minimize the ability of unauthorized persons to gain access to

the network. Most commonly, phone numbers and codes are compromised

when overheard in a public location, through theft of a wallet or purse containing

access information, or through carelessness (writing codes on a piece of paper

and improperly discarding it). Additionally, hackers may use a computer to “dial”

an access code and then publish the information to other hackers. Enormous

charges can be run up quickly. It is the customer’s responsibility to take the

appropriate steps to properly implement the features, evaluate and administer the

various restriction levels, protect access codes, and distribute access codes only

to individuals who have been fully advised of the sensitive nature of the access

information.

Common carriers are required by law to collect their tariffed charges. While

these charges are fraudulent charges made by persons with criminal intent,

applicable tariffs state that the customer of record is responsible for payment of

all long-distance or other network charges. AT&T cannot be responsible for such

charges and will not make any allowance or give any credit for charges that result

from unauthorized access.

To minimize the risk of unauthorized access to your communications system:

● Use a nonpublished Remote Access number.

● Assign authorization codes randomly to users on a “need-to-have”

basis, keeping a log of ALL authorized users and assigning one code

per person.

● Use random sequence authorization codes, which are less likely to be

broken.

● Deactivate all unassigned codes promptly.

● Ensure that Remote Access users are aware of their responsibility to

keep the telephone numbers and any authorization codes secure.

● When possible, restrict the off-network capability of off-premises callers,

via use of Call Restrictions and Disallowed List capabilities.

● When possible, block out-of-hours calling.

● Frequently monitor system call detail reports for quicker detection of any

unauthorized or abnormal calling patterns.

● Limit Remote Call Forward to persons on a “need-to-know” basis.

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