AT&T MDW 9000 Wireless Quick Reference

AT&T

MDW 9000 Wireless

Telephone
Quick Reference

Contents

Handset Controls
Handset Display
Line Status Indicators
Call Alerter

Charging Cradle Controls
Troubleshooting
Wireless Test Mode

MDW 9000 Compatibility

1
2
2
2
3

4-9
10-11
12-17

Remember to press the

[

On/Off

]

button to turn on your wireless

phone before pressing any other button.

Help!

If you need assistance when using your wireless phone with a
PARTNER, MERLIN, or MERLIN LEGEND system in the conti­nental U.S., call 1 800 628-2888. For all other systems, follow

the procedure you normally use to get support for your commu-

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

AT&T

Handset Controls

Headset On/Off

Antenna

Button

Press to turn the
headset on. ON
appears in handset
display. To turn off,

press again. Turn on

to make or answer
a call, and turn off
to “hang up.”

Handset Display

Displays status of
lines and range. For
detailed descrip­tion, see “Handset
Display” on next

page.

Volume Control

Press +/- to adjust

volume of earpiece

or ringer.

Mute

Press to turn the

microphone off for
privacy of internal
communications.

On/Off

Press to turn the
handset on. ON
appears in handset

display To turn off,
press again. Turn on

to make or answer
a call, and turn off
to “hang up.”

Conf (Conference)

Press to conference
in (add) another
party to your call.

Headset Jack

Insert headset cord
when using headset.

Battery Charging
Contacts

Handset battery
charges through
these contacts.

Outside Line/
Programmable/
Intercom/Drop
Buttons (6)

See “MDW 9000
Compatibility”
beginning on page

12 for system button

assignments.

Hold

Press to put a call
on hold.

Feat (Feature)

Press to enter
programming mode
or to use dial-code
features. Not used
on System 25,
System 75, System
85, or DEFINITY®
system.

Trans (Transfer)

Press to transfer
a call to another
extension.

Extension Label

Write the extension
number on this label
using a pencil or
ball-point pen only.

1

Handset Display

➀
➁

➂
➃

➄
➅

➆
➇

➈

18 indicates Local Test Mode; 1 through 10 are used in
Wireless Test Mode.

P indicates programming mode.
MUTE indicates handset microphone is turned off after

pressing [

Mute

].

T indicates handset is in Wireless Test Mode.
MSG indicates a message has been deposited in your

voice mailbox.

Line Status Indicators.

See below.

BATT indicates low battery voltage, Handset also emits 2

beeps. See “Troubleshooting” for more information.

RANGE indicates handset is out of range or almost out of
range. Handset also beeps. See “Troubleshooting” for more
information.

ON

indicates handset has been turned on after pressing [

On/Off

].

Line Status Indicators

There are six line status indicators; each one corresponds to
a specific outside line/programmable/intercom/drop button,
The indicators show either a triangle or a rectangle, signifying
activity as follows:

PARTNER Systems

Arrow ( ▲

or ▼ ) indicates activity at YOUR extension.

Rectangle

( ) indicates activity at ANOTHER extension.

All Other Systems

Rectangle

( ) indicates activity at YOUR extension.

Arrow ( ▲

or ▼ ) indicates activity at ANOTHER extension.

Call Alerter

If a call comes in while the phone is idle, the handset rings.
If you are already on a call, the handset chirps.

2

Charging Cradle Controls

AT&T

Ext. 16

Charge
Spare

Charge

Battery Charging
Contacts

Handset battery
charges through
these contacts.

Handset Hook

Rotate for wall
mounting.

Spare Battery
Compartment
Cover

Open to insert or
remove optional

spare battery pack.

Charge LED

Lights when handset
is properly placed in
cradle for charging.

Spare Charge

LED

Lights when spare
battery pack is

properly placed in
cradle's spare bat-

tery compartment.

Extension Label

Write this phone's
extension number
on this label using a
pencil or ball-point

pen only.

3

Troubleshooting

If you have a problem with your wireless phone, you may be
able to solve it by following the procedures listed here. If you
cannot resolve a problem using these procedures, call for help
as described on the front panel of this Quick Reference.

Symptom Possible Causes

Possible Solutions

After plugging the

For single radio module

radio module or

installations only:
carrier assembly into
an electrical outlet,

■ Radio module is plugged ■ Plug the radio module’s

the radio module’s

into an electrical outlet

power cord into an outlet

POWER

LED does

controlled by a switch.

not controlled by a switch.

not light.

■

Radio module’s power

■ Unplug the radio module’s

cord is not inserted

AC adapter from the

properly.

electrical outlet.
Disconnect then carefully
re-insert the power cord
into the left side of the
radio module. Plug the
radio module’s AC adapter
back into the electrical
outlet.

■ Radio module’s power

■ Call for help.*

cord is defective.

For carrier assembly
installations:

■

Radio module is

■ Call for help.*

inoperable.

After plugging the

Radio module or carrier

Call for help.*

radio module or

assembly is inoperable.
carrier assembly into
an electrical outlet,
the

PASS

LED does

not light.

* See front panel of this Quick Reference.

4

Troubleshooting

Symptom

Possible Causes

Possible Solutions

After pressing

■ Battery is not charged

■ Place handset in charging

[

On/Off

], dial tone i

S

sufficiently.

cradle for 12 hours. Or, if

not heard and hand-

you have a fully charged

set display does not

(14 hours) spare battery,

show anything.

use it to replace the battery
in the handset.

■

Handset is out of range of

■ Move the handset closer

its matching radio module.

to the radio module.

■

Telephone line cord is not

■ Plug the telephone line

plugged into the radio

cord into the radio module.

module.

After pressing [

On/Off

],

■

There is no battery in the

■ Insert battery in handset.

dial tone is not heard

handset.

and the

RADIO

LED

on the radio module

■ Battery is not inserted

■

Make sure battery is inserted

does not light.

properly in handset.

properly in handset.

■ Battery is not charged ■ Place handset in charging

sufficiently.

cradle for 12 hours. Or, if
you have a fully charged
(14 hours) spare battery,
use it to replace the
battery in the handset.

■

Handset is out of range of

■ Move the handset closer

its matching radio module.

to the radio module.

■

There is interference from■ Remove electrical device

another electrical device causing interference or move
(microwave) or metal walls.

handset to another location.

BATT

appears in the Battery requires recharging.

You have 1-2 minutes of talk

handset display.

time left. Either:

■

Complete your call, turn the

handset off, and recharge
the battery (12 hours).

■

If you have a fully charged

(14 hours) spare battery,
place your call on Hold.
Swap the batteries. Wait 6
to 10 seconds, then turn the
handset on and proceed as
you would for any call
placed on Hold.

5

Troubleshooting

Symptom

You can hear the
party on the other
end, but they cannot
hear you.

MUTE

appears in the hand­set display.

Charge

LED on
charging cradle
does not light when
handset is placed
in charging cradle.

Spare Charge

LED
on charging cradle
does not light when
spare battery is
placed in charging
cradle battery com­partment.

Possible Causes

The [

Mute

] button was

pressed inadvertently.

■

Handset is not seated

properly in charging
cradle.

■ Charging cradle is

plugged into an electrical
outlet controlled by a
switch.

■ Handset battery is

defective or dead.

■ Spare battery is not

seated properly in
charging cradle battery
compartment.

■

■

Spare battery is defective

or dead.

Possible Solutions

Press [

Mute

] again to turn

off the mute feature.

■ Make sure handset is

seated properly in charg­ing cradle. Also check
that there are no obstruc­tions on the handset or
charging cradle contacts.
Try cleaning contacts with
a soft eraser.

■ Plug charging cradle

power supply into an outlet
not controlled by a switch.

■ If you have a fully charged

(14 hours) spare battery,
use it to replace the
battery in the handset. Or,
order a new battery. If the
Charge LED still does not
light, call for help.*

Make sure spare battery is
seated properly in the
charging cradle compart­ment. Also check that
there are no obstructions
on the battery or charging
cradle contacts. Try clean­ing contacts with a soft
eraser.

Swap the spare battery

■

with the handset battery to
see if the Spare Charge
LED Iights. If it lights, order
a new battery to replace
the spare. If it does not
light, call for help.*

* See-front panel of this Quick Reference.

6

Troubleshooting

Symptom

Possible Causes

Possible Solutions

After pressing ■ Handset is out of range

■ Move the handset closer

[

On/Off

], the handset

of its matching radio

to the radio module.

beeps and

RANGE

module.
shows in the hand­set display.

■ An electrical device may

■ Remove interfering device

be interfering with your

or power it off, or move

communications link.

handset to another
location.

No ring on incoming

Handset is out of range of

Move the handset closer to

call,

RANGE

appears its matching radio module. the radio module.

in handset display.

While talking and

You are approaching an

Move back towards the

walking, the handset

out of range condition.

handset’s matching radio

beeps and

RANGE

module until the display
flashes in the hand- stops showing RANGE.
set display.

While talking and You are out of range of Move back towards the
walking, the handset

the radio module.

YOUR

radio module. Press [

On/Off

],

beeps and

RANGE CALL HAS NOT BEEN

then proceed as you would
flashes in the hand-

DISCONNECTED. IT

for any call placed on Hold.

set display. You keep

HAS BEEN PLACED ON

walking away from

HOLD.

the handset’s match-

ing radio module, the
display goes blank,
and your call appears
to be disconnected.

After placing a call

You are out of range of the

Move back towards the

on Hold, you walk

radio module.

YOUR

radio module. Press

further away from

CALL HAS NOT BEEN

[

On/Off

], then proceed as

the handset’s match-

DISCONNECTED. IT

you would for any call

ing radio module.

IS STILL ON HOLD.

placed on Hold.
Your handset beeps,
the handset display
flashes RANGE, and
your call appears to
be disconnected.

7

Troubleshooting

Symptom

Range for calls is
lower than expected.

■

■

■

Handset range and
voice quality are not
as good as they
were before.

Volume is too low at
any setting and there
is noise on the line.

Possible Causes

There are environmental

limitations.

A competing radio device

may have been installed in

the area.

■

■

■

Handset or radio module
may not be working
properly.

The connection between
the radio module or
carrier assembly and
switch/control unit may
not be proper.

Telephone line may be
producing noise.

Possible Solutions

Reinstall the radio module
or carrier assembly as
high as possible on the
wall and away from metal
obstructions.

Eliminate any possible
interfering devices (micro­waves) between the radio
module or carrier assembly
and your handset.

Turn off or unplug nearby
equipment (computer,

modem) to see if it is

causing interference. If it

is, make sure it is on a dif-

ferent power line or move

it further away from the
handset, radio module, or

carrier assembly.

Place the handset in

Wireless Test Mode as

described on page 10. If the

signal strength and voice

quality readings are low,
look for a newly installed
radio device nearby.
Remove it or move your
handset’s matching radio
module.

■

■

■

Place the handset in

Wireless Test Mode and

determine sound clarity as
described on page 10. If

the dial tone is clear and

strong, the handset and
radio module are OK.

Check the connection
between the radio module
or carrier assembly and
the switch/control unit.

Report line trouble to your
local phone company.

8

Troubleshooting

Symptom

Possible Causes Possible Solutions

Handset does not

There was a recent

■

Remove battery from

respond to repeated

occurrence of lightning,

handset for 10 seconds,

[

On/Off

] button

or a power failure. then replace it.

presses.

■

Check to see if the radio

module or carrier
assembly is receiving
power.

Your business has 2

There was a recent

Unplug the carrier

or more wireless occurrence of lightning,

assembly’s power cord

phones installed and

or a power failure. from the electrical outlet.

all handsets seem to

Wait 10 seconds, then

have developed inter-

reconnect the power cord

ference problems at

to the outlet.

the same time.
Your business has 2

Handsets have been

Place the handset in

or more wireless

mixed up.

Wireless Test Mode and

phones installed and

determine the terminal

you (a) cannot deter-

identification number as

mine which radio

described on page 11. This

module corresponds

is the slot number of the

to your handset or radio module in the carrier

(b) are confused

assembly that corresponds

about which handset

to the handset, and it is the

is yours.

terminal identification
number of the handset.

Handset range and/

■

Coverage zones of

■

Reinstall one of the

or voice quality is not

carriers overlap.

carriers so the coverage

as good as expected

zones do not overlap.

in multiple carrier

■

You moved into the

assembly

coverage zone of another

■

Move back towards the

installation.

carrier.

handset’s matching radio
module.

You are on a call and

System in Key Mode has

Program some of the

you hear radio

all lines set to ring. An

wireless phones for

interference when

incoming call "wakes up"

Delayed Ring or No Ring.

another call rings.

all of the other radio
modules at the same time
to ring the other phones.

9

Wireless Test Mode

Steps 2 through 5 can be performed in any order, and you can
press [

On/Off

] to exit at any time.

NOTE:

Ignore anything that displays if you press [

4

] or [

5

] while in

1.

2.

3.

Wireless Test Mode. These displays are for AT&T Techni­cians’ use only.

To

enter

Wireless Test Mode:

a.

b.

With the handset turned off, press [

9

] for at least 5

seconds.

While still holding [

9

], press [

On/Off

].

T appears in the display. You hear 2 beeps, then

simulated dial tone.

To determine

sound clarity,

listen to the simulated dial

tone as you walk around. A clear, strong tone indicates

good sound clarity.

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

Strong/almost error free

9

Strong/almost error free

8

Strong/almost error free

7

Very good/some errors

6

Very good/some errors

5

Good/more errors

4

Good to Fair/more errors

3

Fair/more errors

1

2

Near end of range
Near end of range/loss of link

10

Wireless Test Mode

4.

5.

6.

To determine

voice quality,

press [

2

].

The display shows a number from 1 to 10. The higher the

number the better the voice quality, as shown in the table
below:

Display Number

Voice Quality Is

10

Very good

9

Very good

8

Errors, but not noticeable in
normal speech

7

Errors, but not noticeable in
normal speech

6

Noticeable noise

5

Noticeable noise

4

Noisy but intelligible speech

3

Noisy but intelligible speech

2

Garbled speech

1

Unintelligible speech

To determine the

terminal identification number,

press [

3

].

The display shows a number from 1 to 6. This is the

handset’s identification number and the carrier assembly
slot in which the matching radio module resides.

To

exit

Wireless Test Mode, press [

On/Off

].

11

MDW 9000 Compatibility

Your wireless phone is compatible with the communications
systems listed below. To use your phone, follow the programming
and call handling instructions that come with your communica­tions system for the specific phone 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 one identified above, as described in the
following sections.

Entering Station Programming Mode

On all PARTNER, MERLIN, and MERLIN LEGEND systems:

■ To enter programming mode, turn on the handset, press

[

Intercom

], then press [

Feat

] followed by [

0

] [

0

].

■

To exit programming mode, press [

Feat

] followed by [

0

] [

0

]

or turn off the handset.

NOTE:

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

* 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.

12

MDW 9000 Compatibility

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):

1

2

3

18 PMUTE

ON

MSG

RANGE BATT

4

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 phone
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 follow
ing: MERLIN 206/410/820 systems only with Feature Package
2, and all MERLIN Plus, MERLIN

II

and MERLIN 1030/3070

systems. Pressing [

On/Off

] will disconnect the call.

13

MDW 9000 Compatibility

4

■ MERLIN 206/410/820 and MERLIN Plus system buttons

should be assigned as follows; 2, 3, 4, and 5 are line or

feature buttons:

3

5

18

ON

RANGE

PMUTE

MSG

BATT

2

■

To use MERLIN LEGEND system feature codes with this

phone, 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 the 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:

3

4

5

18

PMUTE

ON

MSG

RANGE

BATT

14

MDW 9000 Compatibility

System 25:

■

■

■

■

For Releases 1, 2, and 3, this phone 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 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:

■

■

■

■

9

8

7

18 PMUTE

ON MSG

RANGE BATT

11

10

15

MDW 9000 Compatibility

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

modules (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 this phone. On the newer switches that
accommodate Universal modules:

■

■

■

■

■

System 75 - R1V1, R1V2, and R1V3
DEFINITY G1 - (R1V4)
DEFINITY G3 Version 1 - (R1V5)
DEFINlTY 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.

16

MDW 9000 Compatibility

When using DEFINITY G2.1 and G2.2, General Terminal Admin-

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

administration may be done using that custom set type.
Set administration and button feature assignment may be done

only by the system administrator. It is recommended not to use
a feature that requires visuals (the LCD feature indicator) to be
updated while the set is off. Also, since some features, such as
Send All Calls, provide visual indication that the feature is 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:

3

2

7

18

PMUTE

ON

MSG

RANGE

BATT

5

4

■

System 85 and DEFINITY G2 system buttons should be
assigned as follows: 3, 4, 5, 6, and 7 are line or feature buttons:

5

4

3

18

PMUTE

ON

MSG

RANGE

BATT

7

6

17

Notes

PARTNER, MERLIN, MERLIN LEGEND, and DEFINITY are registered trademarks

of AT&T.

AT&T 503-801-110

Issue 2 (January 1995)

Comcode 107168908

Copyright © 1995 AT&T

AT&T