Black Box DRD-4 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]
JULY 1992
FX140A
DRD-4
DRD-4

2
DRD-4
FEDERAL COMMUNICATIONS COMMISSION
RADIO FREQUENCY INTERFERENCE STATEMENT
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 broiullage radioélectrique édicté par le
ministère des Communications du Canada.”

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TABLE OF CONTENTS
Contents
Chapter Page
1. Specifications ......................................................................................... 4
2. Introduction........................................................................................... 5
2.1 General ......................................................................................... 5
2.2 Ports on the DRD-4 ...................................................................... 5
2.3 Functions of the DRD-4 ............................................................... 7
3. Installing the DRD-4.............................................................................. 8
3.1 Installing the DRD-4 on a Single Line ........................................ 8
3.2 Installing the DRD-4 on a Single Line with Multiple
Phones and Maintaining Exclusion............................................10
3.3 Installing the DRD-4 on Two Lines with Single-Line and
Two-Line Phones (with the DRD-4 connected to one
extension) ....................................................................................11
3.4 Installing the DRD-4 on a KSU/PBX System .............................14
4. Using the DRD-4....................................................................................16
5. Troubleshooting ....................................................................................17

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DRD-4DRD-4
1. Specifications
Connectors — (5) RJ-11 female,
(1) power
Power — 115 VAC, 60 Hz
Size — 1.75"H x 5.6"W x 6"D (4.4 x
14.2 x 15.2 cm)
Weight — 3 lb. (1.4 kg)
Speed — Transparent
Operation — Transparent
Diagnostics — None
FCC Registration —
BEQUSA-18976-KX-N
Ringer Equivalency — 0.6 B

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DRD-4CHAPTER 2: Introduction
2. Introduction
NOTE: The name “Distinctive Ringing
Service” may vary with each
telephone company. This service
may not be available in some
locations. Contact your local
telephone company to verify that the
service is available in your area.
The DRD-4 is compatible with any
telephone device that responds to
a standard phone company ring
signal. This guide defines a few of
the more popular combinations
used with the DRD-4.
2.2 Ports on the DRD-4
The rear panel of the DRD-4 includes
five modular ports and a power input
port, as shown in Fig. 2-1.
2.1 General
The DRD-4 deciphers the
“Distinctive Ringing Service”
provided by the telephone company.
This service uses a single phone line
for multiple phone numbers and
assigns a unique ring identity to each
number. Working with this service,
the DRD-4 identifes and directs each
of the four ring types to a designated
telephone device. You can connect
up to four different telephone
devices to a single telephone line,
giving you automatic operation and
eliminiating the need to flip switches
and turn machines on or off.
TEL LINE-IN
STYLE 1 STYLE 2 STYLE 3 STYLE 4
12 VAC
Fig. 2-1. Rear View of the DRD-4.

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DRD-4DRD-4
STYLE 4 port—This port rings with
a short-long-short ring cadence. Use
this port for any telephone device
that you wish to respond to the
the phone company.
• The DRD-4 recognizes each ring
cadence and automatically
directs each call to its intended
destination.
• The DRD-4 allows any phone
directly connected to the unit to
answer all phone calls during the
ring signal. Once you answer a
call, the DRD-4 will not allow any
of its ports to interrupt a call to
another port. This feature
ensures your privacy during
phone calls and guarantees data
integrity when you use data
equipment.
NOTE: Only the phones connected to a port
will ring when calls are directed to
that port, but you can answer those
calls from other phones.
STYLE 4
fourth phone number.
Fig. 2-6. Style 4 Port.
NOTE: The dashed lines above each port
correspond to the port’s unique ring
cadence.
2.3 Functions of the DRD-4
The DRD-4 is compatible with any
type of telephone device that
responds to a standard phone-
company ring signal. It functions as
follows:
• The DRD-4 monitors the
telephone line for the four
distinctive ring cadences from

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DRD-4
Fig. 2-3. Style 1 Port.
CHAPTER 2: Introduction
Connect your telephone equipment
to the modular ports, as follows:
TEL LINE-IN port—The incoming
telephone line plugs into this port.
STYLE 2 port—This port rings with
a short-short ring cadence. Use this
port for any telephone device that
you wish to respond to the second
phone number.
TEL LINE-IN
Fig. 2-2. Tel Line-In Port.
STYLE 1 port—This port rings with
a standard phone company ring
signal. Use this port for any
telephone device that you wish to
respond to the primary phone
number.
STYLE 1
STYLE 2
Fig. 2-4. Style 2 Port.
STYLE 3 port—This port rings with
a short-short-long ring cadence. Use
this port for any telephone device
that you wish to respond to the third
phone number.
STYLE 3
Fig. 2-5. Style 3 Port.

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DRD-4
3. Installing the DRD-4
To install the DRD-4, you will need
the telephone cable (included) and
an additional cable for each device
you wish to connect to the DRD-4.
If the equipment you wish to
connect to the DRD-4 is not located
near the unit, you may need
extension cables.
3.1 Installing the DRD-4 on a Single
Line
Fig. 2 shows the DRD-4 installed on
a single telephone line.
You can install the DRD-4 on any
system with single- or two-line
phones, including key service unit
(KSU) or private branch exchange
(PBX) multiple-line phone systems.
This chapter explains how to install
the DRD-4 in four different phone
configurations:
• A single line
• A single line that maintains
exclusion
• Two lines with single-line and
two-line phones (with the DRD-
4 connected to one extension)
• A KSU/PBX system

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CHAPTER 3: Installing the DRD-4
To install the DRD-4 on a single line,
follow these steps:
1. Plug the small end of the AC
power cord provided with your
unit into the plug labeled
“12VAC” on the back of the
DRD-4.
2. Plug the AC adapter into any
standard 110-volt outlet. The
green indicator lights on the
front of the unit momentarily
flash on and off in a self-test
pattern. The lights then remain
off.
3. Plug one end of the telephone
cable provided with the DRD-4
into the TEL LINE-IN port on
the back of the unit.
4. Plug the other end of the
telephone cable into the wall
jack.
5. Connect your telephone
equipment to the ports
corresponding to the
appropriate telephone numbers.
EXTENSION PHONES
TEL
LINE-IN
STYLE 1
STYLE 2
STYLE 3
STYLE 4
PHONE
PHONE LINE
Fig. 3-1. Installing the DRD-4 on a Single Telephone Line.

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DRD-4
NOTE: With the installation shown in Fig. 3-
1, calls will only be routed to phones
connected directly to the DRD-4.
Phones not connected directly to
the DRD-4 will ring with each ring
cadence and will be able to interrupt
any call. For total automatic
operation and protect against
interruption, install the DRD-4 as
shown in Figure 3-2.
3.2 Installing the DRD-4 on a Single
Line with Multiple Phones and
Maintaining Exclusion
When you connect the DRD-4 to a
single line with multiple phones, you
may want to maintain exclusion.
Exclusion means that if one phone
line is in use and you pick up a
phone on another line. the first
phone line is not interrupted and
you get a busy signal. To maintain
exclusion, the incoming phone line
must terminate at the DRD-4, and all
phones must connect to the DRD-4
ports. See Fig. 3-2.
NOTE: You should be familiar with
telephone wiring to complete this
installation. Call Technical Support
for instructions or contact a
professionai installer.