ADTRAN 25 User Manual
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AT&T

AT&T System 25

Installation and

Maintenance Manual

555-540-103B

November 1995

©1989 AT&T

All Rights Reserved

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 Center

2855 North Franklin Road

P.O. Box 19901

Indianapolis, Indiana 42619

Every effort was made to ensure that the information in this document was complete and accurate at the time of printing. However, this information is subject to change. This document will be reissued periodically to incorporate changes.

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 b y qualified service technicians only. Technician qualification includes completion of an AT&Thands-oninstructor-ledcourse 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 j a c k is specifically designed for wet locations.

3.Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface.

4.Use caution when installing or modifying telephone lines.

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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

f i r e i f t h e a i r f i l t e r is not in place

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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-premisesstation 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-premisesstations (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 -MFor-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

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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 code04DU9-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.

d

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)

I

6 . 0 Y

 

 

 

 

 

 

 

 

Facility

Interface Code

 

 

 

 

 

 

 

 

 

 

 

Tie Lines

 

 

TL31 M

 

 

 

 

 

 

 

Off-PremisesStations

 

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-PREVENTINGTOLL 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 offpremises callers to access the system from a remote telephone by using an 800 number or a 7- or 10digit 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 offpremises 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-distanceor 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-networkcapability ofoff-premisescallers, via use of Call Restrictions and Disallowed List capabilities.

When possible, blockout-of-hourscalling.

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.