AT&T MDW 9000 Installation Manual

AT&T

TransTalk™ 9000
Digital Wireless System

MDW 9000 Wireless Telephone

Installation

Copyright © 1995 AT&T
All Rights Reserved
Printed in U.S.A.

AT&T 503-801-131

Issue 1

September 1995

Notice

Every effort was made to ensure that the information in this booklet was
complete and accurate at the time of printing. However, information is
subject to change. The pictures in this booklet are for illustrative purposes
only; your actual hardware may look slightly different.

Federal Communications Commission (FCC) Information

For details, see “Regulatory Information.”

Security

Toll fraud, the unauthorized use of your telecommunications system by an
unauthorized party (for example, persons other than your company’s
employees, agents, subcontractors, or persons working on your company’s
behalf) can result in substantial additional charges for your telecommunica­tions services. You are responsible for the security of your system. There
may be a risk of toll fraud associated with your telecommunications system.
You are responsible for programming and configuring your equipment to
prevent unauthorized use. Your system administrator should read all
documents provided with this product to fully understand the features that
can introduce the risk of toll fraud and the steps that can be taken to reduce
that risk. AT&T does not warrant that this product is immune from or will
prevent unauthorized use of common-carrier telecommunication services or
facilities accessed through or connected to it. AT&T will not be responsible

for any charges that result from such unauthorized use.

Trademarks

TransTalk is a trademark of AT&T and PARTNER, MERLIN, MERLIN LEGEND,
DEFINITY and SYSTIMAX are registered trademarks of AT&T. Supra is a
registered trademark of Plantronics, Inc.

Warranty

AT&T provides a limited warranty for this product; see “AT&T Limited Warranty.”

Ordering Information

The order number for this booklet is 503-801-131. The order number for the
MDW 9000 Wireless Telephone Quick Reference is 503-801-132. To order
additional copies of these reference materials, call 1 800 457-1235 or
1 317 361-5353. To order parts and accessories, see “Ordering Replace­ment & Optional Parts.”

Customer Support

In the continental U.S., call 1 800 628-2888 if you need assistance when
using your wireless phone with a PARTNER, MERLIN, or MERLIN LEGEND
system. For all other systems, follow the procedure you normally use to get
support for your communications system.

Outside the continental U.S., contact your AT&T Representative or local
Authorized Dealer.

Contents

Introduction

■

Privacy Information

■

Roadmap

■

Safety Information

Parts List

■

Additional Parts

Key Components
Installation

■

Important Safety Instructions

■

Additional Safety Instructions for Installation Personnel

■

Positioning a Single Radio Module or the Carrier Assembly

■

Installing a Single Radio Module

■

Installing the Carrier Assembly on a Wall

■

Installing the Carrier Assembly on a Shelf or Desk

■

Removing a Radio Module from the Carrier Assembly

1
2
2
3

4
5

6

8

8
11
12
14
16
20
24

■

Moving or Installing New Radio Modules in the
Carrier Assembly

■

Swapping Extensions

■

Installation Self-Test

■

Positioning the Battery Charger

■

Installing the Battery Charger

■

Inserting and Removing the Handset’s Battery Pack
Testing the Handset: Local Test Mode

■

Wireless Test Mode

■

Filling Out Labels

■

26
26
26
27
28
31
33
34
37

The MDW 9000 Battery Charger

38

■

Charger Features

■

Battery Charger LEDs

■

Proper Battery Pack Usage
Low Battery Indicator

■

Inserting a Spare Battery Pack into the Battery Charger

■

Removing a Spare Battery Pack from the Battery Charger

■

Extending Battery Life

■

Handset Range Indicators
Using the Carrying Holster
Headsets

■

Using Headsets

MDW 9000 Compatibility

Entering Station Programming Mode

■

38
39
39
40
41
43
44

45

46

47
47

49
49

■

Programming System Features

Maintaining Your MDW 9000
Ordering Replacement & Optional Parts
AT&T Limited Warranty and

Limitation of Liability

Repair Information

■

Regulatory Information

■

FCC Part 15 Rules

■

IC RSS-210 Compliance

■

Hearing Aid Compatibility

Specifications

50

55

56

57
58

60
60

60
60

61

Index

63

Introduction

Congratulations on the purchase of your new TransTalk™ 9000 Digital
Wireless System
Multi-line Digital Wireless. This product was designed to AT&T's high
standards for innovation, reliability, and convenience.

The phone is wireless; the telephone line cord to the phone was
eliminated. This provides flexibility, so that you may not require
additional telephone wiring when moving into a new building, or
changing the phone’s location in an existing building. The phone
can be located as required. All you need is an electrical outlet, and a

test check to make sure that the handset is in range of its matching
radio module.

The phone is portable, so there is no handset cord. This portability
enables you to move about your work area or home with freedom,

without giving up the features of a corded phone.

MDW 9000 Wireless Telephone.

MDW stands for

The

handset

battery charger

can be used only with the radio module packaged with the handset.
The handset and the radio module each have the same unique
security code to identify the matching pair.

AT&T provides built-in and secure automatic registration between the

handset and radio module, so that your system is ready to use after

powering up.

A carrier assembly (also known as a backplane) is required when

between 2 and 6 wireless phones are used within the same area

of coverage. This unit synchronizes the radio signals and ensures

proper operation of multiple phones. The radio modules are placed

in the carrier assembly.
As a special feature, a spare battery pack can be stored in the battery

charger, allowing for extended phone usage. For convenience, a head-

set can be connected to the phone to allow hands-free conversation.
This booklet describes MDW 9000 telephone installation. Also

included with the phone is a Quick Reference that contains informa­tion about displays, controls, compatibility, and troubleshooting.

communicates through a matching

where the handset sits for charging. Each handset

radio module,

not the

1

After you have installed your MDW 9000 phone and understand the
handset controls and displays, use the programming and call
handling instructions that come with your communications system;
follow the user instructions for the phone type identified below:

■

PARTNER® systems: the MLC-6 Cordless Telephone; the MDW 9000
is fully compatible with the PARTNER family of communications
systems.

NOTE:

Carefully note the functional differences listed in “MDW 9000
Compatibility” later in this booklet for the following systems.

■

MERLIN®, MERLIN Plus, and MERLIN II systems: a 5–button phone.

■

MERLIN LEGEND® systems: a 10–button ATL set.

■

System 25: a 10–button ATL set.

■

System 75, System 85, and DEFINITY® systems*: a 7303s set.

Privacy Information

The MDW 9000 phone is designed to protect the privacy and secu­rity of your voice conversation. The set uses continuously changing
radio frequencies and digital encoding techniques to make it impos­sible for eavesdropping to occur through the use of commercially
available analog radio scanners.

Roadmap

When installing an MDW 9000 phone, it is recommended that you
read the sections of this booklet in the following order:

1. “Important Safety Instructions” and “Additional Safety Instructions
for Installation Personnel”

2.

“Positioning a Single Radio Module or the Carrier Assembly”

* For DEFINITY G3V3 systems, you can administer the system for the .

MDW 9000 telephone (rather than a 7303s set) and follow the user’s
instructions in the MDW 9000 Wireless Telephone User’s Guide, order
number 555-230-768.

2

3.

Choose one of the following sections:

■ If you are installing one MDW 9000 phone:

- “Installing a Single Radio Module”

■ If you are installing 2 to 6 MDW 9000 phones, either:

- “Installing the Carrier Assembly on a Wall” or

- “Installing the Carrier Assembly on a Shelf or Desk”

“Installation Self-Test”

4.
“Positioning the Battery Charger”

5.
“Installing the Battery Charger”

6.
“Inserting and Removing the Handset’s Battery Pack”

7.
“Testing the Handset: Local Test Mode”

8.

9.

“Wireless Test Mode”

10.

“Filling Out Labels”

NOTE:

The Roadmap indicates basic installation guidelines. You must
familiarize yourself with the remaining sections in this booklet and
the Quick Reference to fully understand how to use this phone.

Safety Information

Before installing the MDW 9000 phone, please read and understand
the safety instructions in “Installation.” This booklet also contains
instructions related to safety labels on the product:

WARNING

severe or fatal personal injury if the hazard is not avoided.

CAUTION indicates the presence of a hazard that will or

can cause minor personal injury or property damage if not
avoided.

indicates the presence of a hazard that can cause

3

Parts List

Along with this booklet, the box should contain the items shown below.
If it does not, call for customer support as described on the inside
front cover of this booklet.

Battery Pack

Handset

Wall Mounting

Plate

Battery Charger with

Mounting Base

Carrying Holster

Charging Cradle 11-foot (3.4 m)

Power Cord and

Standard AC Adapter

8-foot (2.4 m)

Telephone Line Cord

Radio Module

4

Philips Head

Wood Screws (2)

Quick Reference

Additional Parts

The following parts may be included or necessary, depending upon
your installation.

Kit of parts (order number D-182866) included only for a single
MDW 9000 phone installation when purchased without the
carrier assembly:

Rubber Feet (4)

Radio Module 11-foot (3.4 m)

Power Cord and

Standard AC Adapter

Philips Head

Wood Screws (2)

Wall Mounting

Plate

Required when 2 or more MDW 9000 phones are installed:

Philips Head

Wood Screws (4)

Carrier Assembly

Carrier Assembly 25-foot (7.6 m)

Power Cord and Standard AC Adapter

(included with purchase of Carrier Assembly)

5

Key Components

Antenna

LEDs

Mounting
Hook

Telephone
Line Cord
Connector

Power Cord
Connector

Card Edge
(Cover not
shown)

Snap Lock

Radio Module

6

NOTE:

This unit is required when installing 2 to 6 MDW 9000 telephones.

Radio
Module
Mounting
Cords

Wall Mount
Hole

Power
Cord
Connector

Card Edge
Connectors

Radio
Module
Mounting
Rods

Wall Mount
Hole

Power
Indicator

Card Edge
Connectors

Slot
Numbers

Wall Mount
Hole

Cable
Manager Slot

Slot
Numbers

Wall Mount
Hole

Rear
Exit Slots

Carrier Assembly

7

Installation

IMPORTANT:

Before beginning installation, please read and understand
“Important Safety Instructions” and “Additional Safety Instructions

for Installation Personnel” on the following pages.

Important Safety Instructions

Always follow these basic safety precautions when installing or using
this product to reduce risk of injury from fire or electric shock.

Make sure the battery charger, radio module, and carrier assem­bly are unplugged before you install.

The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in
the literature accompanying the product.

WARNING:

Failure to properly ground this product will result in a risk
of electrical shock, which can cause serious personal injury.
This product requires a 3-prong AC power receptacle for
safe operation. You should have your receptacle checked
by a qualified electrician before connecting this equipment.

Risk of Electric Shock

WARNING:

The Rechargeable battery contains nickel and cadmium.
Do not burn or puncture the battery. Like other batteries of
this type, if it is burned or punctured, it could release toxic
material which could cause injury. Do not dispose of it in
household garbage. For information about recycling or
proper disposal, consult your local solid waste (garbage)
collection or disposal organization.

SAVE THESE INSTRUCTIONS

8

■

Read and understand all instructions in this booklet before using
this product.

■

Observe all warnings and instructions marked on the product.

■

Unplug this product from wall outlets and telephone jacks before
cleaning. Clean exposed parts with a soft, damp cloth. Do not use
liquid or aerosol cleaners.

■

Do not use the product near water or when you are wet. If product
comes in contact with any liquids, unplug the power cord and
telephone line cords immediately. Do not plug the product back
in until it has dried thoroughly.

■

If you suspect a gas leak, report it immediately, but use a telephone
away from the area in question. The telephone’s electrical contacts
could generate a tiny spark. While unlikely, it is possible that this
spark could ignite a heavy concentration of gas. This product is not
approved for use in areas labeled by the Occupational Safety and
Health Administration (OSHA) as “explosive environments.” Only
“Explosive Atmosphere Telephones” may be used in such hazard­ous environments.

■

Never push objects of any kind into this product through housing
slots, since the objects may touch hazardous voltage points or short
out parts that could result in a risk of electric shock. Never spill liquid
of any kind on the telephone.

■

Install this product securely on a stable surface. Damage may result
if the product falls.

■

Install this product in a protected location where no one can step
on or trip over power cords and telephone line cords. Do not
place objects on the cords that may cause damage or abrasion.

■

Use only the Model # PIDB-270 power supply shipped with this
product for the Battery Charger or radio module.

■

Use only the Model # SW109 power supply shipped with the
carrier assembly.

■

Use only the correct power source. If you are not sure of the power
supply to your location, consult your local power company.

9

■

This product uses a 3-prong plug in continental U.S. locations. Such
plugs are designed for your safety. Do not attempt to defeat this
purpose. If your wall outlet will not accept the plug, the outlet should
be replaced by an electrician.

■

Do not allow anything to rest on the power cord. Do not locate
this product where the cord will be abused by persons walking
on it. Do not overload wall outlets as this can result in the risk of
fire or electric shock. Do not staple or otherwise attach the power
cord to building surfaces.

■

Slots and openings in the housing and the back or bottom are
provided for ventilation. To protect the housing from overheating,
these openings must not be blocked or covered. Therefore, do
not place the product on a bed, sofa, rug, or other similar surface.
Also, do not place this product in an enclosed area unless proper
ventilation is provided.

■

Never place this product near or over a radiator or heat register.

■

Use only the type of battery pack shipped with this product.

■

Unplug this product from the wall outlet, remove the telephone
line cord from the modular wall jack or communications system
switch/control unit, and refer servicing to qualified service per­sonnel under the following conditions:

When the power cord or plug is damaged or frayed.

–
–

If the product does not operate normally by following the
operating instructions. Adjust only those controls that are
covered by the operating instructions because improper
adjustment of other controls may result in damage and will
often require extensive work by a qualified technician to
restore the product to normal operation.

– If the product has been dropped and the housing has been

damaged.

■

This product should be serviced by (or taken to) a qualified service
center when service or repair work is required. Do not open the
product, there are no user serviceable components inside.

10

Additional Safety Instructions
for Installation Personnel

■

Install the product to meet all environmental and electrical

requirements listed in this booklet.

■

Do not install telephone wiring during a lightning storm.

■

Do not install telephone jacks in a wet location unless the jack is
specifically designed for wet locations. Never touch uninsulated

telephone wires or terminals unless the telephone line has been

disconnected at the network interface.

■

Use caution when installing or modifying telephone lines.

■

All wiring that connects to this equipment and becomes part of
the building wiring must be a minimum of CLASS 2 or U.L. Listed
Communications cable.

CAUTION:

This equipment is for installation on AT&T PARTNER, PARTNER
Plus, PARTNER II, MERLIN, MERLIN Plus, MERLIN II, MERLIN
LEGEND, System 25, System 75, System 85, and DEFINITY
communications systems only.

WARNING:

Installation of this equipment for In-Range Out of Building
(IROB) conditions requires the use of protectors. See the
documentation that came with your communications system
for more information.

Go to “Positioning a Single Radio

Module or the Carrier Assembly”

11

Positioning a Single Radio

Module or the Carrier Assembly

This phone uses radio transmissions to communicate. The range

depends on your particular operating environment. For indoor use,
intervening walls will reduce the phone’s range. Try to stay away
from concentrations of structural metal, such as steel and aluminum,
or reinforced concrete.

IMPORTANT:

This phone has a built-in testing feature that you can use before
installation to help determine proper placement of the radio
module. To perform the test, all you need is an electrical outlet for
the radio module and a charged battery in the handset (you do
not need a communications system switch/control unit). Refer to
“Wireless Test Mode” later in this booklet for details.

Before you install the radio module/carrier assembly, note the following
considerations regarding its location and use:

■

When positioning the radio module/carrier assembly, try to place
the unit in a central location, relative to the handset(s) usage area.
For convenience, you may want to place the radio module/carrier
assembly in the same room, and on the same wall, as your com­munications system switch/control unit. If your switch/control unit is
located in a remote location, you may have to run a telephone line
cord from your switch/control unit to the centrally positioned radio
module/carrier assembly. The maximum distance is 1000 feet (333 m)
of 26 gauge cable.

■

At least

6 feet (2 m)

is required between the radio module/carrier

assembly and the communications system switch/control unit.

■

You can install a single radio module in a remote location using a
telephone line cord to connect the radio module to the communi­cations system switch/control unit. IROBs should be used for out­of-building installations.

■

The radio module/carrier assembly should be placed high on the
wall for optimum voice quality and range. Allow at least 1 1/2 feet
(45.7 cm) of space between the top of the antenna on the radio
modules and the ceiling.

12

■

The radio module/carrier assembly should never be installed above

a drop, suspended level ceiling.

■

The radio module/carrier assemly should not share the same
power line as equipment with microprocessors such as answering
machines, personal computers, and fax machines; or electromag-

netic equipment such as electric motors

■

The radio module/carrier assembly should not be within 6
feet (2m) of equipment with microprocessors such as an­swering machines, personal computers, and fax machines;
electromagnetic equipment such as electric motors; or
electrical main power feeds, junction boxes, circuit-breaker
panels, or fuse boxes.

■

Install a single radio module within 3 feet (1 m) of either side of,
and within 6 to 8 feet (2 to 2.6 m) above, a properly grounded
3-prong electrical outlet that is not controlled by an on/off switch.

■

Install the carrier assembly within 15 feet (5 m) of either side of,
and within 6 to 8 feet (2 to 2.6 m) above, a properly grounded
3-prong electrical outlet that is not controlled by an on/off switch.

■

If your communications system uses an uninterruptable power
supply, such as a backup generator, be sure to connect the radio
module/carrier assembly to that power supply.

■

Installing a single radio module on a shelf or desk is not recom­mended, because it greatly reduces the range and quality of the
transmission.

Go to one of the following sections:

“Installing a Single Radio Module”
“Installing the Carrier Assembly on a Wall”
“Installing the Carrier Assembly on a Shelf or Desk”

NOTE:

The following illustrations depict PARTNER system hardware.
Your hardware may differ from that which is shown.

13

Installing a Single Radio Module

■

Install high on wall, leaving at least 1 ½ feet (45.7 cm) between
antenna and ceiling

■

See “Parts List” and “Key Components” earlier in this booklet for
additional picture detail

Check to make sure the radio

1

module’s power cord is
unplugged from the wall outlet before
continuing.

Detach the rubber feet. Apply

2

them to marked areas on the
underside of the radio module.

Place the wall mounting plate

3

against the wall. Choose a
location backed by a wooden stud
(if unavailable, use toggle bolts
instead of the supplied wood
screws). Lightly tap a nail into the
wall to start holes. Then screw the
plate flush to the wall. Place the
radio module over the plate, then
slide it downward to lock it into
place. (Note: do not remove the
plastic cap covering the radio
module’s card edge.)

14

Screw
Holes

Insert the radio module’s

4

power cord into the side of the
radio module. Insert the telephone
line cord into the bottom of the radio
module.

Insert the other end of the

5

telephone line cord into an
existing wall jack or terminal/station
connector on your communications
system switch/control unit (refer to
your communications system
manual for the proper port location).

Plug the power cord/AC adapter

6

into a property grounded 3-prong
wall outlet.

CAUTION: Never

connect or disconnect
line cords while the
radio module is plugged
into the wall outlet.

Go to “Installation Self-Test”

15

Installing the Carrier Assembly

on a Wall

■

Install high on wall, leaving at least 1 ½ feet (45.7 cm) between

antenna and ceiling

■

See “Key Components” earlier in this booklet for additional

picture detail

Check to make sure the carrier

1

assembly’s power cord is
unplugged from the wall outlet before
continuing.

Place the carrier assembly against

2

the wall. Choose a location
backed by a wooden stud (if unavailable,
use toggle bolts instead of the supplied
wood screws). Hold the carrier assembly
straight; use a level if needed. Using a
nail or pencil, mark screw locations
through the four wall mount holes.

Start screws, leaving the screw heads
approximately ½" (12 mm) from the wall.
Place the carrier assembly over the
screws, then slide it downward to lock it
into place. Tighten the screws.

Remove the plastic cap

3

covering each radio module’s
card edge before installing the radio
modules in the carrier assembly.

16

Starting from the leftmost slot (#1),

4

insert each radio module into the
carrier assembly by hooking it onto the
radio module mounting rod. Slowly
swing the radio module’s card edge into
the card edge connector on the back of
the carrier assembly.

When the card edge is fully

5

seated, a snap lock on the
bottom of the radio module will
engage.

Insert a telephone line cord

6

into the bottom of each radio
module.

17

Slide the telephone line cords

7

through the cable manager slot

on the left front of the carrier assembly.

Insert the carrier assembly’s

8

power cord into the left side of

the carrier assembly.

Insert the other end of the

9

telephone line cords into the
appropriate terminal/station connec­tors on your communications system
switch/control unit (refer to your
communications system manual for
the proper location).

18

Insert the carrier assembly’s

10

power cord into the AC adapter,

then plug the AC adapter into a
properly grounded 3-prong wall outlet.

If appropriate, you can wall mount the
AC adapter using its attached wall­mounting bracket.

CAUTION:

Never
connect or disconnect
line cords, or add or
remove radio modules,
while the carrier assem­bly is plugged into the
wall outlet.

Go to “Installation Self-Test”

19

Installing the Carrier Assembly
on a Shelf or Desk

■

You will not receive optimum performance if unit is placed on a
desk or low shelf

■

Install as high as possible, leaving at least 1 ½ feet (45.7 cm)

between antennas and ceiling if on high shelf

■

See “Key Components” earlier in this booklet for additional
picture datail

Check to make sure the carrier

1

assembly’s power cord is un-

plugged from the wall outlet before

continuing.

Remove the plastic cap

2

covering each radio mocule’s
card edge before installing the radio
modules in the carrier assembly.

Starting from the leftmost slot

3

(#1), insert each radio module
into the carrier assembly by hooking it
onto the radio module mounting rod.
Slowly swing the radio module’s card
edge into the card edge connector on
the back of the carrier assembly.

20

When the card edge is fully seated,

4

a snap lock on the bottom of the

radio module will engage.

Insert a telephone line cord

5

into the bottom of each radio

module.

Slide the telephone line cords

6

through the rear exit slots on

the bottom of the carrier assembly.
Cords originating from slots 1 and 6
can share exit slots with cords from
slots 2 and 5 respectively.

21

Insert the carrier assembly’s

7

power cord into the left side of

the carrier assembly.

Place the carrier assembly on

8

its feet towards the back of the
shelf or desk, making sure it is in a
stable position. Be sure the telephone
line cords come out the rear exit slots
in the back of the unit. Arrange the
power cord and telephone line cords
beneath the shelf or desk so no one
can step on them or trip over them.

Insert the other end of the

9

telephone line cords into the
appropriate terminal/station connec­tors on your communications system
switch/control unit (refer to your
communications system manual for
the proper location).

22

Insert the carrier assembly’s

10

power cord into the AC adapter,
then plug the AC adapter into a
properly grounded 3-prong wall outlet.

If appropriate, you can wall mount
the AC adapter using its attached
wall-mounting bracket.

CAUTION:

Never connect or
disconnect line cords,
or add or remove radio
modules, while the
carrier assembly is
plugged into the wall
outlet.

Go to “Installation Self-Test”

23

Removing a Radio Module from
the Carrier Assembly

■

See “Key Components” earlier in this booklet for additional
picture detail

Unplug the carrier assembly’s

1

power cord/AC adapter from

the wall outlet.

Unplug the telephone line

2

cord from the bottom of the

radio module.

24

Press up and hold the snap

3

lock on the bottom rear of the

radio module.

Slowly swing the radio module’s

4

card edge out of the card edge
connector on the back of the carrier
assembly, releasing the snap lock
when clear. Unhook the radio module
from the radio module mounting rod
by gently lifting upward.

25

Moving or Installing New Radio
Modules in the Carrier Assembly

Always unplug the carrier assembly’s power cord/AC adapter from

the wall outlet when:

■

Removing a radio module.

■

Moving a radio module to a new slot in the carrier assembly.

■

Installing a new radio module.

Swapping Extensions

If you want to change your phone’s extension number assignment,
make sure the handset is turned off before unplugging the telephone

line cord from the communications system switch/control unit.

Installation Self-Test

Upon installation, the Power and Pass LEDs on the radio module(s) will

light. The radio module(s) then initiate a 2 minute self-test and synchroni­zation. Check connections if either the Power or Pass LED is not lit.

NOTE:

The Radio LED also may light upon installation; however, since the
Radio LED has no significance during the self-test, ignore its operation.

The Radio LED indicates a connection between the handset and the
radio module; it lights when the handset is being used as long as the
battery in the handset is charged.

Go to “Positioning the Battery Charger”

26

Positioning the Battery Charger

The battery charger can be placed on a desk, or it can be mounted
on a wall. Before you install the battery charger, note the following
considerations:

■

Locate the battery charger within 5 feet (1.6 m) of either side of
(and for wall or shelf mounting, within 5 feet (1.6 m) above) a
properly grounded 3-prong electrical outlet that is not controlled
by an on/off switch.

■

If your communications system uses an uninterruptible power
supply, such as a backup generator, be sure to connect the
battery charger to that power supply.

■

Do not locate the battery charger where it will be exposed to
direct sunlight or water.

WARNING:

The Rechargeable battery contains nickel and cadmium. Do
not burn or puncture the battery. Like other batteries of this
type, if it is burned or punctured, it could release toxic
material which could cause injury. Do not dispose of it in
household garbage. For information about recycling or
proper disposal, consult your local solid waste (garbage)
collection or disposal organization.

Go to “Installing the Battery Charger”

27

Installing the Battery Charger

■

If you are wall mounting the battery charger, follow Steps 1
through 9

■

If you are desk mounting the battery charger, follow only
Steps 1, 4, 5, and 9

Check to make sure the battery

1

charger’s power cord is
unplugged from the wall outlet before
continuing. If you are desk mounting,
skip to Step 4.

To wall mount, gently place the

2

battery charger upside down.
Push in the wide end of the mounting
base (1) and lift upwards (2) to
separate the base from the battery
charger.

Reverse the mounting base (so

3

the wide end of the mounting
base is above the narrow end of the
battery charger). Insert the tab on the
narrow end of the mounting base into
the slot on the wide end of the
battery charger. Insert the tab on
the wide end of the mounting base
into the slot on the narrow end of the
battery charger, pushing the mount­ing base down and slightly inward
until the tabs lock into place.

Wall Mounting Only

Wall Mounting Only

28

Insert the battery charger’s

4

power cord/AC adapter through

the hole in the bottom of the wide end

of the mounting base.

Insert the power cord/AC

5

adapter into the battery

charger plug marked Power. Route
the power cord/AC adapter into the
channel marked Desk or Wall.

If desk mounting, place the battery
charger on the desk, then go to Step

9. If wall mounting, continue with
Step 6.

Reverse the handset hook on

6

the battery charger. Slide the
handset hook up out of its slot.
Then turn the hook upside down
and replace it in the slot with the
top protruding so the handset can
hang from it.

Wall Mounting Only

29

Place the wall mounting plate

7

against the wall. Choose a
location backed by a wooden stud (if
unavailable, use toggle bolts instead
of the supplied wood screws). Lightly
tap a nail into the wall to start holes.

Wall Mounting Only

Screw the wall mounting plate

8

flush to the wall. Place the

battery charger over the plate, then
slide it downward to lock it into place.

Plug the power cord/AC adapter

9

into a properly grounded 3-prong

wall outlet.

Wall Mounting Only

Screw

Holes

30

Go to “Inserting and Removing

the Handset’s Battery Pack”

Inserting and Removing the

Handset’s Battery Pack

To insert the battery pack, insert

1

the tab on the battery pack into

the hole along the top edge of the

battery compartment on the handset.

Press the battery pack down-

2

ward to lock it into place.

Battery Tab

The battery pack must be charged
prior to use. See “The MDW 9000
Battery Charger” later in this booklet
for instructions.

31

To remove the battery pack,

3

grasp the finger grips on both

sides of the battery pack, then gently
pull the battery pack upward and out.

Go to “Testing the Handset: Local Test Mode”

Finger Grip

32

Testing the Handset:
Local Test Mode

This test activates the audio warning signal and all visual indicators
on the handset display.

1.

Remove the handset from the battery charger.

2.

Make sure the handset is turned off.
Press [

3.

4.

While still holding [

#

] for at least 5 seconds.

#

], press [

On/Off

].

The handset emits two beeps and all indicators on the display
appear as shown below:

Local Test Mode

18

ON

RANGE

PMUTE

MSG

BATT

5.

Press [

On/Off

] to exit Local Test Mode.
You must exit this mode to initiate proper call handling.
If the beeps do not sound or the indicators do not appear, call for

customer support as described on the inside front cover of this
booklet.

Go to “Wireless Test Mode”

33

Wireless Test Mode

You can determine sound clarity, signal strength, and voice quality using
Wireless Test Mode. By performing the tests as you walk around the area
in which the handset will be used, you can determine the extent of the
handset’s range and the voice quality throughout the area of coverage.

You also can use Wireless Test Mode to find out the identification
number of a handset and its matching radio module. This can help
you identify your handset if there are multiple MDW 9000 phones in
the same area and the handsets get mixed up. Or, you can use it to
isolate a handset’s matching radio module for repair purposes.

The following procedure provides instructions for all of the Wireless

Test Mode tests. You can perform the tests multiple times and in any

order; and you can exit at any time by pressing [

NOTE:

Ignore anything that displays if you press [
less Test Mode. These displays are for AT&T Technicians’ use
only.

On/Off ].

4

] or [

5

] while in Wire-

1.

To enter Wireless Test Mode:

a.

Remove the handset from the battery charger.

b.

Make sure the handset is turned off.
Press [

c.
d.

While still holding [

9

] for at least 5 seconds.

9

], press [

On/Off

].

T (for Test) appears in the handset display. You hear two
beeps, then simulated dial tone.

To determine sound clarity, listen to the simulated dial tone as

2.
you walk around.

A strong tone indicates good sound clarity.

34

3.4.To determine

signal strength,

press [

1

].

The display shows a number from 1 to 10. The higher the number,
the stronger the signal, as shown in the table below.

Display Number Signal Strength Is

10

9
8 Strong/almost error free
7 Very good/some errors
6
5 Good/more errors
4
3
2 Near end of range
1

To determine

voice quality,

Strong/almost error free
Strong/almost error free

Very good/some errors

Good to Fair/more errors
Fair/more errors

Near end of range/loss of link

press [

2

].

The display shows a number between 1 to 10. The higher the
number, the better the voice quality, as shown in the table below.
A low number may indicate potential interfering devices (such as
another radio transmitter) in the area.

Display Number

10

9 Very good

8

7

6 Noticeable noise
5 Noticeable noise
4
3 Noisy but intelligible speech
2
1

Voice Quality Is

Very good

Errors, but not noticeable in
normal speech

Errors, but not noticeable in
normal speech

Noisy but intelligible speech

Garbled speech

Unintelligible speech

35

To determine the terminal identification number, press [

5.
The display shows a number from 1 to 6. This is the handset’s

identification number. It is also the number of the slot in the
carrier assembly where the handset’s matching radio module
resides. (A single MDW 9000 installation displays number 1.)

6.

To exit Wireless Test Mode, press [

On/Off

].

Go to “Filling Out Labels”

3 ].

36

Filling Out Labels

Remove the protective film from the handset display. Using a ballpoint
pen or pencil only, write the following information on the erasable labels:

(Local Test Mode shown)

18 PMUTE

ON

RANGE BATT

Handset Display Labels (6)

MSG

Handset Battery Charger

Extension Label Extension Label

On the handset display labels,

write the line numbers or pro-

grammed features assigned to
each of the outside line/program­mable/intercom/drop buttons.

On the handset extension label
(below the mouthpiece) and on
the battery charger’s extension
label, write the phone’s extension

number.
See “MDW 9000 Compatibility”
later in this booklet.

NOTE:

If you use a pencil or ball-point pen on these labels, you will be able

to erase the information later. Do not use felt-tip or other types of non-

erasable markers. Also, do not remove the labels.

37

The MDW 9000 Battery Charger

Handset
Cradle

Fast Charge
Compartment

Fingerhole

Handset Cradle

NOTE:

Do not touch, push, or pull any exposed battery contacts.

Battery Contacts

Cover Holes
Battery Tab Hole

Handset LED

Spare Fast
Change LED

Charger Features

■

Fast charge compartment:

–

Fast-charges a battery pack in 2.5 hours
Reconditions the battery pack by reducing or eliminating

–

potential “memory” effect.

NOTE:

The “memory” effect, which reduces a battery’s capacity, is
caused when you recharge a battery before it is fully discharged.

■

Handset cradle:

–

Slow-charges the handset battery pack.

38

Battery Charger LEDs

■

The Handset LED, when lit, indicates that the handset battery pack
is in charge mode (battery pack in handset on battery charger).

■

The Spare Fast Charge LED, when lit, indicates that a spare

battery pack is in the battery charger’s fast charge compartment:

When the Spare Fast
Charge LED...

Is steady red
Is steady orange
Is steady green

Flashes orange

The battery pack inside the
fast charge compartment is...

being discharged.

being fast-charged.

fully charged.

defective; replace the battery pack.

The battery charger will charge both the handset battery pack and the
spare battery pack when they are in their proper receptacles.

Refer to the illustration on page 38 for the location of these LEDs on
the battery charger.

Proper Battery Pack Usage

We recommend that you use the fast charge compartment to charge
the battery pack fully and quickly.

NOTE:

Before you use the MDW 9000 handset for the first time, the
battery pack must be charged.

The following table shows how long reconditioning takes, depending
on how much charge is left in the battery pack when you insert it into
the fast charge compartment:

Battery-Pack Charge State Discharge Time Recharge Time Total Time

Low charge (lights BATT
indicator)

Full charge

0.5 hours
4 hours

2 hours
2 hours 6 hours

2.5 hours

39

IMPORTANT:

Depending on the level of “memory” effect that the battery
may have, it is sometimes necessary to recondition the
battery pack in the fast charge compartment twice. (Insert the
battery pack in the fast charge compartment and leave it

there until the Spare Fast Charge LED is steady green.

Remove the battery pack from the fast charge compartment,

then re-insert it and leave it until the Spare Fast Charge LED

is steady green a second time.)

Note that your handset will consume power during both talk time
(when the handset is on) and standby time (when the handset is
turned off, but out of the battery charger). A fully charged battery
pack provides about 3 hours of talk time or about 22 hours of
standby time. As a guideline, you can expect a 1 hour reduction in
talk time for every 7 hours of standby time. Similarly, you can expect
a 7 hour reduction in standby time for every hour of talk time.

We highly recommend that you purchase a second battery pack to
use as a spare. With the spare battery pack in the battery charger’s
fast charge compartment, you are assured of having a fresh, usable
battery pack while you are using the battery pack in the handset.

Low Battery Indicator

When the handset is on and the battery power is low, the handset
will emit two beeps and the BATT indicator in the handset display
will flash. When this occurs, you have approximately 1 to 2 minutes
of talk time left. At this point, you can either:

■

Complete your call, turn the handset off, and recharge the battery
pack, or

■

If you have a charged spare battery pack, place your call on Hold

and replace the handset battery pack with the spare battery pack
from the fast charge compartment of the battery charger. Wait 6
to 10 seconds, then turn the handset on and proceed as you would
for any call placed on Hold.

NOTE:

If you continue talking, the handset will turn off when the battery
pack is drained. Your call will be placed on Hold automatically so
you can swap battery packs.

40

Inserting a Spare Battery Pack
into the Battery Charger

■

See “The MDW 900 Battery Charger” earlier in this booklet for

additional picture detail

Press the finger grip on the side

1

of the cover and lift the cover off.

Insert the tab on the battery

2

pack into the hole on the side of

the fast charge compartment. Push

down the battery pack to lock it into
place. The Spare Fast Charge LED
should light. If the Spare Fast
Charge LED does not light, try
reseating the battery pack.

The Spare Fast Charge LED remains
lit until the battery pack is removed
from the compartment.

41

Replace the cover by inserting

3

it in the cover holes (1). Then
swing the cover downward until it
locks into place (2).

The battery pack will be fully

charged and ready to use in 2.5 to 6

hours, depending on its charge
state. (See Table on page 39.)

42

Removing a Spare Battery Pack
from the Battery Charger

■

See “The MDW 9000 Battery Charger” earlier in this booklet
for additional picture detail

Press the finger grip on the

1

side of the cover and lift off
the cover.

Insert your finger in the finger-

2

hole under the battery pack,

then gently pull the battery pack

upward and out.

The Spare Fast Charge LED will go
off.

43

Extending Battery Life

Although a battery pack can be charged in the handset when the
handset rests in the battery charger, the battery charger reconditioning
process is optimized to give a much faster and efficient charge to the
pack. The fast charge compartment discharges the battery pack before
recharging it, thereby ensuring the best possible charge.

The slow charge that the cradle sends the handset battery helps
keep the handset operational while not in use. It is not a substi­tute for the reconditioning and quick charging capability of the
fast charge compartment. With this in mind, use the battery
charger’s fast charge compartment as the primary recharger.

When the spare pack in the fast charge compartment is fully charged,
switch it with the pack in the handset.

Follow theses steps to ensure an uninterrupted supply of power to
your MDW 9000 phone:

Action

If you have only one battery pack, place
the pack into the fast charge
compartment at the end of each day.

If you have two battery packs, exchange
the packs between the handset and the
fast charge compartment at least once a
day.

Alternate the battery pack(s) between the
handset and the battery charger’s fast
charge compartment, even if the handset
battery never lights the handset’s
indicator.

BATT

Reason

The fast charge compartment recondi­tions the battery pack, optimizing the
battery’s performance and extending its
life.

The fast charge compartment recondi­tions the battery pack, optimizing the
battery’s performance and extending its
life.

To improve battery efficiency, the battery
charger’s fast charge compartment always
discharges the battery pack before
recharging it. Because the handset never
discharges the battery pack, be sure to
insert the pack into the battery charger’s
fast charge compartment at least once a
day.

44

Handset Range Indicators

The handset provides an audible and a visual warning signal to alert

you when the handset is not within optimal range of the radio module.
Depending on how far away the handset is from the radio module,
the signal functions as follows:

■

Out of optimal range. If you walk into an area that is near the
end of the optimal operating range of the radio module, the
handset emits two beeps and flashes the RANGE indicator
continuously. At this point, you can continue your conversation or
initiate a call, but you are likely to experience a degradation in
voice quality.

■

Loss of communication link. If you walk into an area that is out
of operating range of the radio module, the handset emits five
beeps and flashes the RANGE indicator five times. In this case,
you must bring the handset within range of the radio module
within several seconds or the handset will turn off. If the handset
turns off, it appears that your call was disconnected; however it
has only been put on Hold. To talk with your party, move back
towards the radio module, press [
would for any call placed on Hold.

On/Off ], then proceed as you

■

Cannot establish communication link. If you are completely out
of range of the radio module when you attempt to make a call, the
handset emits two beeps and flashes the RANGE indicator two
times: then the handset automatically turns off. To make the call,
move back towards the radio module and try again.

Refer to “Troubleshooting” in the Quick Reference for additional
information about out-of-range conditions.

45

Using the Carrying Holster

The carrying holster allows you to carry the handset with you without
having to hold it in your hand. To attach the holster to your belt,
simply thread your belt through the holster’s belt loop. Then slip the
handset into the holster.

Handset
Carrying
Holster

Holster Belt
Loop

To easily remove the handset from the carrying holster, place one
hand on the holster to hold it in place (as shown in the picture
above) then pull the handset out with the other hand.

46

Headsets

This telephone is equipped with a single-prong headset jack on the
bottom of the handset (near the mouthpiece). A headset assists in
call answering, and provides hands-free operation. AT&T offers a
headset designed for use with your wireless phone.

NOTE:

The range of the handset is diminished when you are using a
headset. You may need to move closer to the radio module, or
move the radio module closer to you.

Using Headsets

To use a headset, simply plug the headset cord into the headset
jack on the handset.

CAUTION:

Do not plug any other device into the headset jack.

When using the carrying holster, insert the headset cord into the
handset before you insert the handset into the holster. Then slide

the handset into the holster with the cord running alongside it. If you
insert the cord after the handset is placed in the holster, removing
the handset will disconnect the cord.

Headset Cord

47

If desired, the headset cord can be removed from the handset
without the call being dropped. You can then use the handset as you
normally would.

NOTE:

Calls cannot be heard on the handset when the headset is connected
to the headset jack. The handset microphone is also deactivated.

Using the Headset On/Off Button

For convenience when using the carrying holster, the headset [

On/Off

]

button near the antenna should be used. This button will become active

only

identical in function to the [

when the headset cord is plugged into the headset jack. It is

On/Off

] button to the left of the [

Hold

] button.

Answering Calls with a Headset

When you receive a call, you will hear a ringing tone coming from the
handset (you will not hear a tone from the headset itself). To answer
the call, press the headset [
the left of [

Hold

] if the handset is not in the holster).

On/Off

] button near the antenna (or [

On/Off

] to

Placing Calls with a Headset

To place a call with a headset:

1.

Remove the handset from the carrying holster.

Press the [

2.
available line.

On/Off

] button near the antenna to access an

Dial the number as described in the user instructions that come

3.
with your communications system.

Press the [

4.

On/Off

48

] button to end the call.

MDW 9000 Compatibilty

After you have installed your MDW 9000 and understand the handset

controls and displays, use the programming and call handling

instructions that come with your communications system; follow the
user instructions for the phone type identified below:

■

PARTNER systems: the MLC-6 Cordless Telephone; the MDW

9000 is fully compatible with the PARTNER family of commu­nications systems.

■

MERLIN, MERLIN Plus, and MERLIN II systems: a 5-button phone.

■

MERLIN LEGEND systems: a 10-button ATL set.

■

System 25: a 10-button ATL set.

■

System 75, System 85, and DEFINITY systems*: a 7303s set.

Carefully note the functional differences between your wireless
phone and the phone type identified above, as described in the
following sections.

If you have a fully loaded carrier assembly and the wireless phones
shares the same line appearance, it is recommended that you
program some of the wireless phones for Delayed Ring or No Ring.

Entering Station Programming
Mode

On all PARTNER, MERLIN, and MERLIN LEGEND systems:

■

To enter programming mode, turn on the handset, press [ Intercom ],
then press [

■

To exit programming mode, press [

off the handset.

NOTE:

The above instructions do not apply on System 25, System 75,
System 85, and DEFINITY systems. On these systems, features
are assigned by the system administrator.

Feat

] followed by [

0

] [

0

].

Feat

] followed by [

0

] [

0

] or turn

* For DEFINITY G3V3 systems, you can administer the system for the

MDW 9000 telephone (rather than a 7303s set) and follow the user’s
instructions in the MDW 9000 Wireless Telephone User’s Guide, order

number 555-230-768.

49

Programming System Features

PARTNER Systems:

PARTNER II and PARTNER Plus system buttons should be assigned

■

as follows; 1, 2, 3, and 4 are line or feature buttons (for a PARTNER
system, buttons 1 through 4 are line only):

18

ON

RANGE BATT

PMUTE

MSG

MERLIN Systems:

■

It is recommended that you use MERLIN 206/410/820 systems
installed with Feature Package 2 with your wireless phone.

■

On MERLIN II and MERLIN LEGEND systems, you must connect

your wireless phone to an available jack on either a 408 outside
line/analog telephone module or a 008 analog telephone module.

■

You must disable the Voice Announce feature. This telephone does
not have a speaker function.

■

The wireless phone should not be assigned to a paging group.

■

To program the Ringing Option feature, use the “arrow” and
“rectangle” indicators in the display as the equivalent of red

and green LEDs, respectively.

■

For MERLIN II system users, if you program an Auto Intercom button,
idle line preference must be set to intercom.

■

If any of your incoming lines has the call waiting feature, program the
Recall feature on one of the programmable buttons and press it be­fore you pick up a waiting call. You can dial #50 before you pick up a
waiting call on the following: MERLIN 206/410/820 systems only with
Feature Package 2, and all MERLIN Plus, MERLIN II, and MERLIN
1030/3070 systems. Pressing the [

50

On/Off

] button will disconnect the call.

■

MERLIN 206/410/820 and MERLIN Plus system buttons should be
assigned as follows; 2, 3, 4, and 5 are line or feature buttons:

18

ON

RANGE

■

To use MERLIN LEGEND system feature codes with this phone,

PMUTE

MSG

BATT

program the top right-hand button as a System Feature button.
This will permit you to use the wide array of LEGEND system
features by turning the set on, pressing the System Feature
button, and dialing the appropriate “ * ” code number. Your
wireless phone’s [

Feat

] button only allows you to enter program­ming mode. It does not work when using MERLIN LEGEND
system features.

■

MERLIN 1030/3070, MERLIN II, and MERLIN LEGEND system
buttons should be assigned as follows; 3, 4, and 5 are line or
feature buttons:

18

ON

RANGE

PMUTE

MSG

BATT

51

System 25:

■

For Releases 1, 2, and 3, this telephone must be administered as
a 10-button MERLIN set (type 303).

■

Either a TN762B Hybrid pack or a ZTN79 ATL pack must be used
to connect the switch and the MDW 9000 telephone.

■

Assigning features may be done only by the system administrator.

■

Use the following features with caution:
Automatic Intercom, Bridging, Coverage, Direct Station Selection,

Personal Line, Pooled Facility, Send All Calls (use with single ring
reminder).

Since these features provide visual indication that the feature is

turned on, be aware that if you turn off the handset when using
that feature, you may forget that the feature is on.

■

Do not assign the following features: Auto Answer, Scroll, Inspect,
Directory, Next, Local, Call, and Manual Callback Queuing.

■

If programming the Flex DSS or Repertory Dial feature, dial the

number to be recorded and push the button you are assigning to

the feature. You will receive 3 short beeps and a dial tone to

confirm programming.

■

If you are programming numbers for the Station Speed Dial feature,
dial the numbers to be stored then dial the Personal Speed Dialing
code (#20 through #39), including the #. Listen for a confirmation
tone followed by a dial tone.

■

System 25 buttons should be assigned as follows; 7, 8, 9, 10, and
11 are system access or feature buttons:

18

ON

RANGE

PMUTE

MSG

BATT

52

System 75, System 85, and DEFINITY systems:

This phone must be administered as a 7303s Hybrid terminal for the
following systems:

■

System 75 - R1V1, R1V2, and R1V3

■

System 85 - R2V1, R2V2, R2V3, and R2V4

■

DEFINITY G1 - (R1V4)

■

DEFINITY G2 - G2.1 and G2.2 - (R2V5, R2V6)

■

DEFINITY G3 Version 1 - (R1V5)

■

DEFINITY G3 Version 1.1 and Version 2

Native terminal administration is provided in DEFINITY G3 Version 3.

On the older switch types that do not accommodate Universal mod-

ules (System 85 - R2V1, R2V2, R2V3, and R2V4), an ANN17B Hybrid

pack in conjunction with a DS-1 carrier must be used to connect the
switch and the MDW 9000 telephone. On the newer switches that
accommodate Universal modules:

■

System 75 - R1V1, R1V2, and R1V3

■

DEFINITY G1 - (R1V4)

■

DEFINITY G3 Version 1 - (R1V5)

■

DEFINITY G3 Version 1.1 and Version 2

■

DEFINITY G3 Version 3

a TN762B Hybrid pack must be used with the Universal carrier for this

purpose. Depending upon the actual hardware configuration, DEFINITY

G2 - G2.1 and G2.2 may utilize either an ANN17B or TN762B pack. In

either case, the latest vintage packs are recommended.

Note that for DEFINITY G2.1 and G2.2, General Terminal Administration

(GTA) may be used to set up “custom” set types so that administration

may be done using that custom set type.

53

Set administration and button feature assignment may be done only
by the system administrator. It is recommended that you do not use
features that require visuals (the LCD feature indicator) to be up­dated while the set is turned off. Also, since some features, such as
Send All Calls, provide visual indication that the feature is turned on,
be aware that if you turn off the handset when using that feature, you
may forget that the feature is on.

■

System 75 and DEFINITY G1 and G3 system buttons should be
assigned as follows; 1, 2, 3, 4, and 5 are line or feature buttons:

18

ON

RANGE

■

System 85 and DEFINITY G2 system buttons should be assigned as

PMUTE

MSG

BATT

follows: 3, 4, 5, 6, and 7 are line or feature buttons:

18

ON

RANGE

PMUTE

MSG

BATT

54

Maintaining Your MDW 9000

This telephone is designed to provide trouble-free performance
without any special maintenance procedures. To reduce the risk
of accidental damage:

■

Keep the telephone in an area free of dust, smoke, and moisture; do
not block the air vents by placing objects on top of the radio module.

■

Do not place the telephone near a heating duct, radiator, or other heat
source, and do not drop or expose it to excessive shock or vibration.

■

Unplug the battery charger, radio module, or carrier assembly if
its power cord is damaged, if liquid is spilled into it, or if its housing
becomes cracked or otherwise damaged.

■

To clean your telephone, wipe the outside housing with a soft, dust­free cloth. If absolutely necessary, you may use a cloth slightly
dampened with a mild soap and water solution. Dry quickly with a
soft cloth.

CAUTION:

Your telephone contains sensitive electronic parts. Never
submerge it in any kind of liquid, and never use detergents,
alcohols, solvents, abrasive cleaners, or an excessive amount
of water when cleaning the housing and faceplate. To do so
could result in irreparable damage.

55

Ordering Replacement &
Optional Parts

To order replacement parts or optional equipment in the continental
U.S., call the AT&T Sourcebook Sales, AT&T Catalog Sales, or AT&T
National Parts Sales Center toll free. When ordering, please use the
part numbers shown in the table below.

AT&T

Item

Sourcebook

Sales

1 800 451-2100

Battery Pack

White 32034A
Black

Handset Carrying Holster

Gray

Black
Handset Carrying Case
Battery Charger (includes

Battery, Power Cord and
AC Adapter)

White

Black
Power Cord and AC

Adapter for Battery
Charger (11 foot (3.4 m))

32036A 32036A

NA
NA

11135X

32040A-10 32040A-10

32040A-9

NA

AT&T Catalog

Sales

AT&T National

Parts Sales Center

1 800 222-PART

1 800 635-8866

32034A

NA
NA 846501401

11135X

32040A-9

NA 847523404

107546400
107546392

846628527

NA

107076762
107076754

Carrier Assembly
Power Cord and AC

Adapter for Carrier
Assembly (25 foot (7.6 m))

Telephone Line Cord
(8 foot (2.4 m))

Power Cord and AC
Adapter for Radio Module
(11 foot (3.4 m))

Supra
Kit of Parts (For Single

MDW 9000 Installation)

Outside the continental U.S., contact your AT&T Representative or local Authorized Dealer.

®

900 Headset

3204-CR1A

NA

NA

NA

3122-041A

D-182866

3204-CR1A

NA

NA

NA

3122-041A

D-182866

107073330

847224227

103786794

847523404

407156892

107586828

56

AT&T Limited Warranty
and Limitation of Liability

AT&T warrants to you, the customer, that your wireless telephone sys­tem will be in good working order on the date AT&T or its Authorized
Dealer delivers or installs the system, whichever is later (“Warranty
Date”). If you notify AT&T or its Authorized Dealer within one year of the
Warranty Date that your system is not in good working order, AT&T will
without charge to you repair or replace, at its option, the system compo­nents that are not in good working order. Repair or replacement parts
may be new or refurbished and will be provided on an exchange basis.
If AT&T determines that your system cannot be repaired or replaced,
AT&T will remove the system and, at your option, refund the purchase
price of your system or apply the purchase price towards the purchase
of another AT&T system.

If you purchased your system directly from AT&T, AT&T will perform
warranty repair in accordance with the terms and conditions of the
specific type of AT&T maintenance coverage you selected. A written
explanation of AT&T’s types of maintenance coverage may be
obtained from AT&T by calling 1 800 247-7000 (in the continental
U.S. only). If you purchased your system from an AT&T Authorized
Dealer, contact your dealer for the details of the maintenance plan
applicable to your system.

This AT&T limited warranty covers damage to the system caused by
power surges. Unless otherwise expressly agreed to in a written
agreement signed by AT&T, AT&T will not be responsible under this
limited warranty for damages resulting from:

■

Failure to follow AT&T’s installation, operation, or maintenance
instructions;

■

Unauthorized system modification, movement, or alteration;

■

Unauthorized use of common carrier communication services

accessed through the system;

■

Abuse, misuse, or negligent acts or omissions of the customer

and persons under the customer’s control; or

■

Acts of third parties and acts of God.

57

AT&T’S OBLIGATION TO REPAIR, REPLACE, OR REFUND, AS
SET FORTH ABOVE, IS YOUR EXCLUSIVE REMEDY.

EXCEPT AS SPECIFICALLY SET FORTH ABOVE, AT&T, ITS
AFFILIATES, SUPPLIERS, AND DEALERS MAKE NO WARRAN­TIES, EXPRESS OR IMPLIED, AND SPECIFICALLY DISCLAIM
ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR
A PARTICULAR PURPOSE.

Limitation of Liability:

Except as provided below, the liability of AT&T and its affiliates and
suppliers for any claims, losses, damages, or expenses from any
cause whatsoever (including acts or omissions of third parties), regard­less of the form of action, whether in contract, tort, or otherwise, shall
not exceed the lesser of: (1) the direct damages proven; or (2) the
repair cost, replacement cost, license fee, annual rental charge, or
purchase price, as the case may be, of the equipment that directly
gives rise to the claim. Except as provided below, AT&T and its
affiliates and suppliers shall not be liable for any incidental, special,
reliance, consequential, or indirect loss or damage incurred in connec­tion with the equipment. As used in this paragraph, consequential
damages include, but are not limited to, the following: lost profits, lost
revenues, and losses arising out of unauthorized use (or charges for
such use) of common carrier telecommunications services or facilities
accessed through or connected to the equipment. For personal injury
caused by AT&T’s negligence, AT&T’s liability shall be limited to
proven damages to person. No action or proceeding against AT&T or
its affiliates or suppliers may be commenced more than twelve (12)
months after the cause of action accrues. THIS PARAGRAPH SHALL
SURVIVE FAILURE OF AN EXCLUSIVE REMEDY.

Repair Information

Outside the continental U.S., contact your AT&T Representative or
local Authorized Dealer for warranty and repair information applicable
to your system.

58

In-Warranty Repairs

If you purchased or leased your system directly from AT&T, AT&T will
repair it free of charge during the one-year warranty period. Simply
call the Hotline and ask for service.

Business-Day service is standard during the warranty period. Business­Day service is performed during normal business hours. (Around-the­Clock service is not available for phones.)

If you purchased or leased your system through an AT&T Authorized
Dealer, contact your dealer for repairs.

Post-Warranty Repairs

If you purchased the system from AT&T and you have a post-warranty
service contract, AT&T service is provided under the terms of that
contract.

To significantly reduce unexpected repair costs after the warranty
period, you can purchase a post-warranty service contract from

AT&T. If you do not have a contract, AT&T service is provided on a

time-and-materials basis by calling the Hotline. A contract provides to
you, within the applicable coverage period and response times,
service calls with no charge for parts and labor on covered repairs.

To order a post-warranty service contract, call 1 800 247-7000 (in the
continental U.S. only).

If you leased your system from AT&T, Business-Day service is

included in your lease.

If you purchased or leased your system through an AT&T Authorized

Dealer, contact your dealer for repairs.

59

Regulatory Information

Regulatory agencies require that you be notified of the following:

FCC Part 15 Rules

The AT&T MDW 9000 Wireless Telephone has been tested and has been
found to comply with FCC Part 15 Rules. These specifications are
designed to provide reasonable protection against harmful interference in
a commercial or residential installation. This wireless telephone 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. However, there is no guarantee that
interference will not occur in a particular installation. If the telephone does
cause harmful interference to radio or television reception, which can be
determined by turning the telephone off and on, the user is encouraged
to try to correct the interference by one or more of the following measures:

■

Where it can be done safely, reorient the receiving television or
radio antenna.

■

To the extent possible, relocate the television, radio, or other
receiver with respect to the telephone.

Plug the telephone into an electrical outlet that is not on the same

■

circuit as one used by the radio or television.

IC RSS-210 Compliance

This device complies with RSS-210 of Industry Canada. Operation is
subject to the following two conditions:

This device may not cause interference.

1.

2.

This device must accept any interference including interference

that may cause undesirable operation of the device.

The user is cautioned that modifications to this telephone, not

expressly approved by AT&T, could void the user’s authority to
operate the equipment.

Hearing Aid Compatibility

This wireless telephone is compatible with inductively-coupled
hearing aids.

60

Specifications

GENERAL

Model: MDW 9000
Dimensions Handset

and Weights:

Handset w/Battery

Pack

Battery Charger

Battery Charger w/

Battery Pack

Battery Pack 3.0"(L) x .75"(H) x 2.5"(W)

Headset w/Cord

(Approx.) 26.67 x 3.05 x 14.22 cm

Radio Module (RM)

Carrier Assembly (CA)

Carrier Assembly

w/6 RM's

Power Supply (Battery 3.19"(L) x 1.94"(H) x 2.17"(W)

Charger and RM)

Power Supply (CA)

10.0"(L) x 2.43"(H) x 1.5"(W)

25.4 x 6.17 x 3.8 cm

10.0"(L) x 2.43"(H) x 1.5"(W)

25.4 x 6.17 x 3.8 cm .57 kgs

9.75"(L) x 5.13"(H) x 3.94"(W)

24.77 x 13.03 x 10.01 cm

9.75"(L) x 5.13"(H) x 3.94"(W) 1.5 lbs

24.77 x 13.03 x 10.01 cm .68 kgs

7.6 x 1.9 x 6.35 cm .23 kgs

10.5"(L) x 1.2"(H) x 5.6"(W) .17 lbs

12.1"(L) x 1.5"(H) x 5.5"(W)

30.73 x 3.81 x 13.97 cm .68 kgs

14.0"(L) x 2.5"(H) x 9.0"(W)

35.56 x 6.35 x 22.86 cm

14.0"(L) x 2.5"(H) x 9.0"(W)

35.56 x 6.35 x 22.86 cm

8.09 x 4.92 x 5.50 cm 0.5 kgs

5.13"(L) x 1.6"(H) x 1.6"(W)

13.03 x 4.06 x 4.06 cm .77 kgs

.75 lbs
.34 kgs

1.25 lbs

1.0 lbs
.45 kgs

.50 lbs

.08 kgs

1.5 lbs

3.0 lbs

7.62 kgs

12.0 lbs

5.44 kgs

1.1 lbs

1.7 lbs

Operating Temperature range:
Temperature: Relative humidity:

Electrical
Specifications: Battery Charger
(Power)

Battery Pack Life:

Handset 2.0 watts

Radio Module
Carrier Assembly

w/6 RM’s

Power Supply (Battery

Charger and RM)

Power Supply (CA) 30.0 watts (9V)
Nickel Cadmium 3.0 hours talk time/22 hours standby time

4.4° C (40° F) to 40° C (104° F)
15% to 95%

1.5 watts

4.0 watts

24.0 watts

6.0 watts (10V 600mA)

61

RF SYSTEM
PARAMETERS

Frequency Band:
Channel Spacing:

902.1 - 927.9 MHz
150 KHz

Total Channel
Capability: 50 (Channels Dynamically allocated out of 173)

Duplex Method: Time Division Duplex (TDD) (Transmit and Receive on same

frequency)

Transmitter

Dynamic Power Adjustment: 1mW ERP Minimum to 160mW ERP

Output Power: Maximum
Reveiver

Sensitivity:

-100 dBm at Antenna Port

OTHER

■

Electrical
Requirements:

105-135VAC, 50-60 Hz, 3-prong outlet separate ground, separately
fused at 15 amps.

■

Outlet must not be controlled by an on/off switch

■

Grounding to comply with Underwriters Laboratories (UL)
1459

Requirements Installation of a telephone or other standard (tip/ring) device
For Out-Of-Building

Extensions:

in another building requires the following In-Range Out-of­Building (IROB) protectors to protect the switch/control unit and
telephone device from electrical surges:

MDW 9000 phone: two AT&T 503A1 protectors (ETR)

two AT&T 343B protectors (ATL)

Wiring:

62

■

MDW 9000 phone: AT&T SYSTIMAX® or at least
2-pair (4-wire) star (“home run” not “loop”) ETR

■

AT&T SYSTIMAX or at least 4-pair (8-wire) star
(“home run” not “loop”) ATL

■

Bridging Adapter: AT&T 267F2 (ETR)

■

Bridging Adapter: AT&T 267C (ATL)

■

Range: 1,000 feet (305 meters) for the Radio Module (26 AWG)

Index

B

Backplane (see Carrier assembly)
BATT indicator, 40
Battery charger

about, 1, 27, 38, 39
charging the spare battery, 39,

41
choosing location for, 27
extension label, 37
features, 38
illustration of, 38
inserting the spare battery, 41
installation, 28
LEDs, 38, 39
removing the spare battery, 43

Battery pack

charging in battery charger,

38, 41
extending life of, 44
handset, 31, 38, 39
life, 40, 61
low battery indication, 38
reconditioning, 38, 39, 40, 44
spare, 39, 40, 41, 43, 44

Carrying holster, 46

D

DEFINITY systems, 2, 49, 53

E

Extension labels, 37
Extensions, changing, 26

F

Fast charge compartment, 38,

39, 40, 41, 43

FCC information, 60

C

Carrier assembly

about, 1
choosing location for, 12
illustration of, 7
removing a radio module from, 24
shelf or desk installation, 20
testing the installation, 26
upgrading radio modules, 26
wall installation, 16

H

Handset

about, 1
carrying holster, 46
charging the battery pack,

31, 38, 39
cradle, 38
filling out labels for, 37

identifying, 36

63

Handset (continued)

illustration of, 4
inserting and removing the

battery pack, 31
local test mode, 33
range indicators, 45
wireless test mode, 34

Handset display labels, 37
Handset LED, 38, 39
Headset

about, 47
answering calls, 48
placing calls, 48

Hearing aid compatibility, 60
Holster, 4, 46
Hotline, inside front cover

Pass, 26
Power, 26
Radio, 26
Spare Fast Charge, 38, 39

Local test mode, 33

M

Maintenance, 55
MERLIN systems, 2, 49, 50

P

I

IC information, 60
Installation

battery charger, 28
carrier assembly, 16, 20
radio module, 14, 16, 20
remote location, 12
testing, 26

L

Labels, 37
LED

Handset, 38, 39,

PARTNER systems, 2, 49, 50
Parts

additional, 5
ordering, 56

system, 4
Pass LED, 26
Phone compatibility, 49
Power LED, 26
Programming mode, 49

R

Radio LED, 26
Radio module

about, 1
carrier assembly installation,

16, 20

choosing location for, 12

64

Radio module (continued)

identifying, 36
illustration of, 6
moving, 26
removing from carrier assembly,

24
replacing, 26
single module installation, 14
testing the installation, 26
upgrading, 26

Range, 12, 34, 45
RANGE indicator, 45
Repair information, 58, 59
Replacement parts, 56

T

Talk time, 40, 61
Terminal identification number,

36

Testing

handset, 33
signal strength, 35
sound clarity, 34

voice quality, 35

V

S

Safety precautions, 3, 8, 11
Signal strength, 35
Sound clarity, 34
Spare battery

about, 40, 44
inserting in battery charger,

41
removing from battery

charger, 43

Spare Fast Charge LED, 38, 39
Specifications, 61

Standby time, 40, 61
System 25, 2, 49, 53
System 75, 2, 49, 53
System 85, 2, 49, 53

Voice quality, 35

W

Warranty information, 57
Wireless test mode, 34

65

Printed in USA

503-801-131 Issue 1
Comcode 107673956