Black Box NTU-1 User manual

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]

DECEMBER 2000

IS200A-R2

NTU-1

FCC INFORMATION

FEDERAL COMMUNICATIONS COMMISSION

and INDUSTRY CANADA

RADIO FREQUENCY INTERFERENCE STATEMENTS

Class B Digital Device.

This equipment has been tested and found to comply with

the limits for a Class B computing device pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against harmful

interference in a residential installation. However, there is no guarantee that

interference will not occur in a particular installation. This equipment generates,

uses, and can radiate radio frequency energy, and, if not installed and used in

accordance with the instructions, may cause harmful interference to radio

communications. If this equipment does cause harmful interference to radio or

telephone reception, which can be determined by turning the equipment off and

on, the user is encouraged to try to correct the interference by one of the following

measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which

the receiver is connected.

• Consult an experienced radio/TV technician for help.

Caution:

Changes or modifications not expressly approved by the party

responsible for compliance could void the user’s authority to operate the

equipment.

To meet FCC requirements, shielded cables and power cords are required to

connect this device to a personal computer or other Class B certified device.

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

apparatus set out in the Radio Interference Regulation of Industry Canada.

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

applicables aux appareils numériques de classe B prescrites dans le Règlement sur le brouillage

radioélectrique publié par Industrie Canada.

NTU-1

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.

NOM STATEMENT

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.

NTU-1

TRADEMARKS USED IN THIS MANUAL

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

trademark owners.

CONTENTS

Contents

Chapter Page

1. Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2 What the Package Includes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3.1 ISDN Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3.2 Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3. Installation and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1 Preparing the Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.2 Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.3 DIP-Switch Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.4 ISDN and Terminal Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.5 Wallmount Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.6 Remote Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.7 Signal Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.8 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.9 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4. Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1 NTU-1 to ISDN U Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.2 NTU-1 to Terminal Endpoint Equipment. . . . . . . . . . . . . . . . . . . . . 14

5. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1 Calling Black Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2 Shipping and Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Appendix. Wallmount Template . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

NTU-1

1. Specifications

Maximum Operating Distance—18,000 ft. (5486 m)

U Interface Coding—2B1Q

Operating Temperature—32 to 122°F (0 to 50°C)

Humidity—Up to 95% noncondensing

Power Consumption—5 watts maximum

Wallmount Transformer Output—34 VAC

Size—1.5"H x 6.3"W x 5.1"D (3.8 x 16 x 13 cm)

Weight—2.5 lb. (1.1 kg) with transformer

CHAPTER 2: Introduction

2. Introduction

2.1 Description

The Network Termination Device (NTU-1) is designed for the ISDN basic rate

communication system. It installs between the Central Office U interface, and the

customer premise S or T interface. It effectively converts the central office 2-wire

echo-canceled 2B1Q code to a customer premise 4-wire alternate space inversion

code (see Figure 2-1). Both point-to-point and multipoint configurations are

supported.

Figure 2-1. Typical ISDN interface arrangements.

The NTU-1 can reside on a desk or be wall mounted. Six light-emitting diodes

(LEDs) show unit status. The rear panel houses the power jack, two jacks for either

an S or T interface to the customer premise equipment, one U jack for connection

to the central office, and one 4-position DIP switch for terminating resistor

selection. Power is supplied by the wall transformer, which also provides power to

the associated terminal devices via the S/T jacks.

2.2 What the Package Includes

Your package should include the following items. If anything is missing or

damaged, contact Black Box Technical Support at 724-746-5500.

• Network Termination Unit (NTU-1)

• U interface cable

Customer Premise

Equipment Central Office

Terminal

Adapter

NT2

NTU-1

2-wire

2B1Q Code

S Interface

T Interface

Interface

ISDN

2B+D

and/or 4-wire

ASI Code

LAN

WAN

PBX

Fax

PCs

NTU-1

• Power supply

• This users’ manual

2.3 Features

• Mounts on a wall or desktop

• Point-to-point or multipoint configuration

• Built-in surge protection

• All options and connections are accessible via the rear panel

• Up to 18,000 feet (5486 m) operating distance

• 2B1Q to alternate space inversion interface coding

• Standard RJ-45 jacks on all interfaces

• Wall transformer and U interface cable included

• Automatic remote (backup) power pickup

2.3.1 ISDN F

EATURES

• Loss of power notification

• Embedded operations channel 2B+D loopback

• Integral metallic termination circuit (sealing current)

• Warm start activation

• Remote activated quiet mode and insertion loss tests in maintenance modes

2.3.2 C

OMPLIANCE

Complies with these standards:

• ANSI T1.601-1992 network side

• ANSI T1.605

CHAPTER 3: Installation and Operation

3. Installation and Operation

3.1 Preparing the Site

The installation area should be free from extreme temperatures, humidity, shock,

and vibration. Allow sufficient space for cable clearance. For wallmount

applications, a template is provided to help locate the retaining screw holes (see

Appendix).

CAUTION

For wallmount applications, position the NTU-1 with connectors and

cables exiting downward. Make sure that the LEDs are visible during

operation.

3.2 Wall Mounting

Using the template found on the last page of this manual, mark the wall and insert

three number 6 pan-head type screws. Allow the screw heads to protrude 1⁄10 ". After

inserting all three screws, position the NTU-1 in place by engaging the screw heads

and sliding it to the right until it’s secure. You might have to adjust the screws for a

snug fit.

NOTE

On some installations, it may be easier to make connections or position

DIP switches before wall mounting.

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