Black Box 120H User manual

CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]
FEBRUARY 1997
FX120A
Line Share 120H
POWER
Phone Line Manager 120H

33
FCC STATEMENT
FEDERAL COMMUNICATIONS COMMISSION
and INDUSTRY CANADA
RADIO FREQUENCY INTERFERENCE STATEMENT
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.

4
LINE SHARE 120H
4
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.

55
NOM STATEMENT
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.
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.

6
LINE SHARE 120H
TRADEMARKS
All applied-for and registered trademarks are the property of their respective
owners.

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TABLE OF CONTENTS
CONTENTS
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.1 Unpacking the Line Share 120H . . . . . . . . . . . . . . . . . . . . . . . .10
3.2 Ports on the Line Share 120H . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.3 Placing the Line Share 120H . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.4 Connecting the Line Share 120H . . . . . . . . . . . . . . . . . . . . . . . .13
3.4.1 Installation on a Single Phone Line with a
Single Phone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.4.2 Installation on a Single Phone Line with
Multiple Single-Line Phones . . . . . . . . . . . . . . . . . . . . . . .16
3.4.3 Installation on a Telephone System . . . . . . . . . . . . . . . . .17
4. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.1 Fax CNG Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.2 Standard Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.3 Answering Incoming Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.4 Answering Calls with an Answering Machine . . . . . . . . . . . . . . .21
4.5 Retrieving Answering-Machine Messages from a Remote
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.6 Placing an Outbound Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4.7 Receiving a Computer Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4.8 Dialing the Destination (Receiving) Computer through
the Originating (Calling) Computer . . . . . . . . . . . . . . . . . . . . .23
5. Troubleshooting/Helpful Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

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LINE SHARE 120H
1. Specifications
Data Rate — Transparent
Interface Type — 2-wire (tip & ring)
Line Type — 2-wire dial
Operation — Full-duplex
Programming — From DTMF tones of phone
Ringer Equivalency — 1 B
Indicators — ON
Connectors — (4) RJ-11 female
Power — Input: 120 VAC
Size — 2.25”H x 6.5”W x 7.25”D (5.7 x 16.5 x 18.4 cm)
Weight — 2.4 lb. (1.1 kg)

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CHAPTER 2: Introduction
2. Introduction
This guide is designed to help you install and use the Line Share 120H. Please
read through this guide and select the installation procedures appropriate for
your specific application before attempting to connect or operate the Line
Share 120H.
NOTE
According to standard industry practice, surge protection is
recommended for use with all electronic devices. A surge suppressor
and/or line conditioning should be used on the input power supply, as
well as the connected telephone line.
Call Waiting: Fax and modem transmissions could be disrupted by the
call-waiting beep tone.
Call Forwarding: If call forwarding is enabled, the Line Share 120H
cannot process calls on that line.
Phone Company Voice Mail: This service is not compatible with the Line
Share 120H. However, standalone voice-mail systems work well with the
Line Share 120H.
We recommend that call forwarding and the phone company’s voice mail
services be discontinued.
The Line Share 120H is a state-of-the-art telephone line sharing device that
eliminates the extra dedicated telephone lines used to operate a fax, modem,
or other telephone devices.
The Line Share 120H quickly directs incoming telephone calls to one of
three appropriate destinations, typically a computer modem, fax/modem, or
fax machine, as well as a telephone and answering machine, or any other
telephone device that responds to a standard phone company ring signal.
Please read through the rest of this guide to learn how to properly install
and operate the Line Share 120H.

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LINE SHARE 120H
3. Installation
The Line Share 120H is a single-line device that can be installed on any type
of modular or non-modular system that consists of one or more lines, with
one or more phones. A modular system consists of phone cables that can be
connected and disconnected from a telephone device. A non-modular system
consists of cables that are hard-wired to the telephone device and cannot be
disconnected from the equipment. A telephone installer may be required to
install the Line Share 120H on a non-modular system.
NOTE
Many offices have a KSU or PBX phone system. The Line Share 120H
works with either of these systems. Simply follow the appropriate
installation instructions provided in Section 3.7.
3.1 Unpacking the Line Share 120H
When you open the Line Share 120H box for the first time, inspect the
contents. You should have the following items:
• (1) Line Share 120H
• (1) AC power adapter
• (1) telephone line cord
• This user manual
If any of these items are missing or damaged, call Black Box immediately at
(724)-746-5500.

11
CHAPTER 3: Installation
3.2 Ports on the Line Share 120H
The rear panel of the Line Share 120H includes four (4) modular ports
and a power input port, as shown in Figure 3-1.
12VAC
FAX/
MODEM
4
PHONE
3
TAD
2
LINE-IN
1
Figure 3-1. Ports on the Line Share 120H.
1. Connect a single telephone line from a standard telephone (wall) jack to
this port.
2. Connect your telephone answering device (TAD) or integrated
phone/answering machine to this port. The Line Share 120H will route
all calls to the TAD and PHONE ports simultaneously.
3. Depending on the installation, a single line phone, and integrated
phone/answering machine, multiple phones, or a telephone system (KSU
or PBX) can be connected to this port. The Line Share 120H will route all
calls to the TAD and PHONE ports simultaneously.
4. The fax machine must be connected to the FAX/MODEM port to enable
the Line Share 120H to automatically transfer a fax call with a fax CalliNG
(CNG) tone to the fax machine. A computer modem or fax/modem can
connect to this port in lieu of a fax machine.