Black Box Micro T1 CSU Manual de usuario

JUNE 1999

MT120A-R2

Micro T1 CSU/DSU

CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)

FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com • E-mail: [email protected]

CE NOTICE

Trademarks Used In This Manual

AT&T is a registered trademark of American Telephone and Telegraph Company.

Any trademarks mentioned in this manual are acknowledged to be the property of

the trademark owners.

CE Notice

The CE symbol on your Micro T1 CSU/DSU indicates that it is in compliance with

the Electromagnetic Compatibility (EMC) directive and the Low Voltage Directive

(LVD) of the Union European (EU).

WARNING

This device is not intended to be connected to the public telephone

network.

MICRO T1 CSU/DSU

FEDERAL COMMUNICATIONS COMMISSION

AND

CANADIAN DEPARTMENT OF COMMUNICATIONS

RADIO FREQUENCY INTERFERENCE STATEMENTS

This equipment generates, uses, and can radiate radio frequency energy and if not

installed and used properly, that is, in strict accordance with the manufacturer’s

instructions, may cause interference to radio communication. It has been tested

and found to comply with the limits for a Class A computing device in accordance

with the specifications in Subpart J of Part 15 of FCC rules, which are designed to

provide reasonable protection against such interference when the equipment is

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 own

expense will be required to take whatever measures may be necessary to correct the

interference.

Changes or modifications not expressly approved by the party responsible for

compliance could void the user’s authority to operate the equipment.

This digital apparatus does not exceed the Class A limits for radio noise emission from digital

apparatus set out in the Radio Interference Regulation of the Canadian Department of

Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites

applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le

brouillage radioélectrique publié par le ministère des Communications du Canada.

NOM STATEMENT

NORMAS OFICIALES MEXICANAS (NOM)

ELECTRICAL SAFETY STATEMENT

INSTRUCCIONES DE SEGURIDAD

1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de

que el aparato eléctrico sea operado.

2. Las instrucciones de seguridad y operación deberán ser guardadas para

referencia futura.

3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de

operación deben ser respetadas.

4. Todas las instrucciones de operación y uso deben ser seguidas.

5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca

de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc..

6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que

sean recomendados por el fabricante.

7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea

recomendado por el fabricante.

8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá

a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser

referido a personal de servicio calificado.

9. El aparato eléctrico debe ser situado de tal manera que su posición no

interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,

alfombra o superficie similar puede bloquea la ventilación, no se debe colocar

en libreros o gabinetes que impidan el flujo de aire por los orificios de

ventilación.

10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor

como radiadores, registros de calor, estufas u otros aparatos (incluyendo

amplificadores) que producen calor.

11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del

tipo descrito en el instructivo de operación, o como se indique en el aparato.

MICRO T1 CSU/DSU

12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización

del equipo no sea eliminada.

13. Los cables de la fuente de poder deben ser guiados de tal manera que no

sean pisados ni pellizcados por objetos colocados sobre o contra ellos,

poniendo particular atención a los contactos y receptáculos donde salen del

aparato.

14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las

recomendaciones del fabricante.

15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas

de energia.

16. El cable de corriente deberá ser desconectado del cuando el equipo no sea

usado por un largo periodo de tiempo.

17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean

derramados sobre la cubierta u orificios de ventilación.

18. Servicio por personal calificado deberá ser provisto cuando:

A: El cable de poder o el contacto ha sido dañado; u

B: Objectos han caído o líquido ha sido derramado dentro del aparato; o

C: El aparato ha sido expuesto a la lluvia; o

D: El aparato parece no operar normalmente o muestra un cambio en su

desempeño; o

E: El aparato ha sido tirado o su cubierta ha sido dañada.

FCC REQUIREMENTS

FCC REQUIREMENTS FOR

TELEPHONE-LINE EQUIPMENT

1. If you have problems with your telephone equipment after installing this

device, disconnect this device from the line to see if it is causing the

problem If it is, contact your supplier or an authorized agent.

2. The telephone company may make changes in its technical operations

and procedures. If any such changes affect the compatibility or use of

this device, the telephone company is required to give adequate notice

of the changes.

3. If the telephone company requests information on what equipment is

connected to their lines, inform them of:

a. The telephone number that this unit is connected to.

b. The ringer equivalence number.

c. The USOC jack required: RJ-11C.

d. The FCC registration number.

Items (b) and (d) can be found on the unit’s FCC label. The ringer

equivalence number (REN) is used to determine how many devices can

be connected to your telephone line. In most areas, the sum of the RENs

of all devices on any one line should not exceed five (5.0). If too many

devices are attached, they may not ring properly.

4. In the event of an equipment malfunction, all repairs should be

performed by your supplier or an authorized agent. It is the

responsibility of users requiring service to report the need for service to

the supplier or to an authorized agent.

MICRO T1 CSU/DSU

CERTIFICATION NOTICE FOR

EQUIPMENT USED IN CANADA

The Canadian Department of Communications label identifies certified

equipment. This certification means that the equipment meets certain

telecommunications-network protective, operation, and safety

requirements. The Department does not guarantee the equipment will

operate to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible

to be connected to the facilities of the local telecommunications company.

The equipment must also be installed using an acceptable method of

connection. In some cases, the company’s inside wiring associated with a

single-line individual service may be extended by means of a certified

connector assembly (extension cord). The customer should be aware that

compliance with the above conditions may not prevent degradation of

service in some situations.

Repairs to certified equipment should be made by an authorized

Canadian maintenance facility—in this case, your supplier. Any repairs or

alterations made by the user to this equipment, or equipment malfunctions,

may give the telecommunications company cause to request the user to

disconnect the equipment.

Users should ensure for their own protection that the electrical ground

connections of the power utility, telephone lines, and internal metallic water

pipe system, if present, are connected together. This precaution may be

particularly important in rural areas.

CAUTION:

Users should not attempt to make such connections themselves, but

should contact the appropriate electric inspection authority, or

electrician, as appropriate.

The LOAD NUMBER (LN) assigned to each terminal device denotes the

percentage of the total load to be connected to a telephone loop which is

used by the device, to prevent overloading. The termination on a loop may

consist of any combination of devices, subject only to the requirement that

the total of the load numbers of all the devices does not exceed 100.

CONTENTS

Contents

Chapter Page

1. Specifications ........................................................................................................8

2. Introduction ..........................................................................................................9

2.1 Description ..................................................................................................9

2.2 Features ........................................................................................................9

2.3 Supported Applications ..............................................................................9

2.3.1 As an Interface Between the Telco and CPE ................................10

2.3.2 As a High-Speed Short-Range Modem ..........................................10

3. Configuration ......................................................................................................11

4. Installation............................................................................................................18

4.1 DTE Interface Connection........................................................................18

4.2 Network Interface Connection ................................................................18

4.3 Power Connection ....................................................................................18

5. Operation ............................................................................................................19

5.1 LED Descriptions ......................................................................................19

5.2 Central Office Loops ................................................................................20

Appendix A: Cable Recommendations ..................................................................22

Appendix B: Pin Assignments ..................................................................................23

Appendix C: Power-Supply Interface ......................................................................24

MICRO T1 CSU/DSU

1. Specifications

WAN Speed — 1.544 Mbps

WAN Connection — RJ-48C

Nominal Impedance — 100 ohms

DTE Interface — Integral V.35, M/34 male

Line Coding — AMI/B8ZS

Line Framing — D4/ESF

Receive LBO — Automatic

Transmit LBO — Selectable: 0, 7.5, 15, or 22.5 dB

Clock Options — Internal, external, and network clock

Diagnostics — Responds to CO-initiated D4 loop-up and loop-

down codes, ESF line loop and payload loop

FDL messages, universal loopback de-activate

message

Standards — AT&T®TR62411, ANSI T1.403, TR54016

Power Supply — 120 VAC, 60 Hz to 5 VDC 300-mA wallmount

transformer (for DTE power options, see

Appendix C)

Size — 0.8"H x 2.1"W x 4.5"D (2 x 5.3 x 11.4 cm)

CHAPTER 2: Introduction

2. Introduction

2.1 Description

The Micro T1 CSU/DSU supports a single T1 or Fractional T1 connection at data

rates of 1.544 Mbps (unstructured), n × 64, and n × 56. Plug the Micro T1

CSU/DSU directly into the WAN port of a switch, router, or multiplexor.

The Micro T1 CSU/DSU is easily configurable using two PC-board-mounted DIP

switches. Use the DIP switches to set D4 or ESF framing modes, AMI or B8ZS line

coding, clocking modes, T1 starting channel, Line Build Out, and data rate.

Connecting directly to the V.35 interface, the ultra-compact Micro T1 CSU/DSU

attaches without using additional cables. Twisted-pair line connections are made

through a modular RJ-48 female jack on the rear of the unit.

Seven easy-to-read LED indicators monitor data, network, and test signals.

2.2 Features

• Operates over 4-wire T1 (DS1) circuits.

• Supports unstructured rates at 1.544 Mbps.

• Supports common framed n × 56/64 rates up to 1.536 mbps.

• Seven easy-to-read LEDs monitor data and diagnostics.

• Internal or external network clocking.

• Also works as a high-speed point-to-point modem.

• Compact size; plugs directly into a router, switch, or other DTE.

2.3 Supported Applications

The Micro T1 CSU/DSU supplies the interface between the telephone-company

and customer-premises equipment (such as a router). The Micro T1 CSU/DSU

can also be used as a high-speed short-haul modem for campus applications.

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