Mitsubishi Electric AT&T T250 User Manual

1

Using This Guide ..........2

Key Symb ols ........... ... ... . 2

Phone Overview ...........3

Key Functions ..............4

Display Indicators ........ 6

Getting Started ............8

Charging Battery ............ 8

Attaching Battery ........... 9

Basic Phone

Operations ............. 11

Turning on the Phone .. 11

Making a Ca l l ............. .. 11

Answering a Call .......... 12

Unansw er ed C al ls ....... .. 12

Voice Mail .................... 13

Text Messages (SMS) .... 14

Menu Help ................... 14

Safety Information ....15

Care and Maintena nce . 23

Voice Mode Features .24

Dialing Stored Numbers 24

Speed Dialing ............... 25

Emerge n cy C al ls ........... 25

Sounds On/Off ............. 26

Mute/Unmute .............. 26

Adjusti ng Vo lu m e ........ 26

Sending DTMF Tones .... 27

Pause Feature ............... 27

Memory Link Feature ... 28

Calling Card Calling ...... 28

Conversation Mode ...... 29

Menu System .............31

Access to the Menus .... 31

Menu Map ................... 32

Entering Text ................ 34

Phonebo ok .... ............. .. 38

View ........................ 38

New Entries ............. 38

Status ...................... 40

Messages ..................... 40

Voice Mai l ................ 40

Message Inb ox ......... 40

Status .. ... ... ... ... ... .......... 41

Call Lists ................... 41

Talk Time s ...... .......... 41

IP Address ................ 42

Preferences .................. 42

Sound s On/ O f f ....... ... ... 53

Key Guar d .............. ... ... 53

Systems ........... ............. 53

Data Mode Features .. 55

Connecting to Data

Mode ........................... 55

Making a Voice Call ..... 58

AT&T PocketNet®

Service .................... 59

Home Page Menu Map. 60
Home Page Menu Items 62

Inbox ....................... 62

Contacts .................. 67

Calendar .................. 70

My Web Sit es ........... 72

My Favori te s ...... ... ... 74

Portals ..................... 75

To Do . ... ... ... ............. 76

AT&T ........................ 78

Tethered Mode .......... 81

Appendix .................... 94

Access ories ...... ....... ...... 94

Glossary ....................... 95

Troubl eshooting ..... ...... 97

Index .......................... 99

Table of Contents

2

Using This Guide

The MobileAccess™ T250 phone combines two separate devices –
a wireless voice phone and a wireless data terminal.

The voice phone can be used where cellular service is available. It works
over 800 MHz digital/analog and 1900 MHz digital networks.

To access wireless data service, you must be in an area where wireless IP
(CDPD) service is provided. Your network service p rovider must set up
and register a unique IP and email address for you.

As you use the phone, keep in mind these two points:

• The phone cannot operate simultaneously as a voice phone and a data
terminal. Pressing the MODE key allows you to switch between Voice
Mode and Data Mode. In some instances, the phone will
automatically switch modes.

• Some of the phone’s keys have different functions depending on
whether you’re in Voice Mode or Data Mode. See Key Functions,
pages 4-5.

Key Symbols

To help you quickly understand this manual, symbols on the keys and ex­pressions in the display are explained below.

Right ar row on Expr ess Key
Left arrow on Express Key
Up arrow on Express Key
Down arrow on Express Key
SEND key
END key

Softkeys Softkeys control the action or function displayed immediately

above. Press the softkey to execute that action. For example,

Store softkey means press the softkey under the word Store to

store the displayed number or text. Softkey actions/labels change
with each new screen.

Express

Key

The Express Key is the navigation key. Use and on the
Express Key to scroll to th e required item i n the menu and select
by pressing

OK left softkey. For example, select View Options

means scroll to the menu item

View Options and select by

pressing

OK left softkey.

Another way to navigate menus is to press the number
associated with a menu item to go directly to the next screen
associated with that item.

3

MobileAcce ss™ T250 Phone Overview

Alphanumeric keys

Enter text and
telephone numbers.
Also used for menu
navigation, speed
dial access and
Favorites access.

Microphone

Earpiece

Menu key

Press to go to

main menu

for phone and

data-related

services. This is

NOT the br o wser

menu. Press and

hold to get

menu help.

Right

softkey

Executes

action

displayed

immediately

above on

screen.

Left softkey

Executes action
displayed on
screen directly
above.

Mode key

Press and hold
to turn the
phone on or off.
Press to toggle
between Voice
& Data Mode.

Clear key

Erases

characters.

Turns off aler ts.

Express Key

Navigation key.
Press and hold left
arrow to dial voice
mailbox. Press and

hold right arrow to

read text messages.

Press arrows to

move curs o r

between options.

SEND key

Dials displayed
number or name
and answers calls.

END/Back key

Hold down to end a

call or go back to

previous display.

Graphic disp lay

Telephone numbers,
menus, mess a ges,
etc. are displayed
here.

AC Rapid Charging
Adapter socket

Data cable

connector

Headset

socket

Connect

headset here.

4

Key Functions - Voice Mode

Key Standby Voice Mode Active Voice Mode

Left: Call Lists
Right: Phonebook
Press/hold: Turn on Key Guard

Left: Mute
Right: Options
Press/hold: Turn on Key Guard

Press: Switch to Data Mode
Press/hold: Power OFF

Not active

Press: Recall last 10 dialed
numbers

Press: Dial n umber displayed/
answer incoming call
Press/hold: Credit card call (if
activated)

Main menu for phone
services
Press/hold: Help/info about
displayed item

Main menu for phone
services
Press/hold: Help/info about
displayed item

Press: Go back 1 scr een
Press/hold: Go to standby

screen

Press: Go back 1 scr een
Press/hold: Terminate call

Press/h ol d left: voice mailbo x
Press/h old right: SM S

messages
Press up/down: Rin ge r
volume control

Press up/down: Volume
control - earpiece

Press: Clear previous character
Press/hold: Clear entire entry

Press: Clear previous ch aracter
Press/hold: Clear entire entry

-

Press: In text entry, enter let­ters, numbers or symbols
In text entry, press 1 for
punctuati on mar k
Press/hold: Speed dial Phone­book entry
Press/hold 9: Emergency Call if
set up

Press: Enter numbers
(Can be used to enter & store a
number, but tones will sound.
To store a number silently, use
scratchpad option)

Press: Enter * or change case in
text entry

Press: Enter *

Press: Enter 0
Press/hold: Speed dial

operator

Press: Enter 0
Press/hold: Speed dial

operator

Press: Enter # or, in text entry,
a space

Press: Enter #

5

Key Functions - Data Mode

Key Standby Data Mode Active Da ta Mo d e

Softkey action Action indicated on softkey

displayed above

Press: Switch to Voice Mode
Press/hold: Power OFF

Press: Switch to Voice Mode
Press/hold: Power OFF

Not active Not active

Main menu for phone
services (NOT browser Home
Page menu).
Press/hold: Help/info about
displayed item

Main menu for phone
services
Press/hold: Help/info about
displayed item

Press: Go to s tandby scr een Press: Go back 1 screen

Press/hold: Return to Home

Page

Press up/down: Scroll to
menu selection

Press up/down: Scroll to
menu selection
Press left/right: Move to next
character or word in text entry

Not active Press: Cl ear previous ch aracter

Press/hold: Clear entire entry

-

Press: Move directly to menu
item next screen
In text entry, enter letters,
numbe rs or symbols
In text entry, press 1 for
punctuati on mar k

Press/hold: Go to My Favorites
Press/hold 9: Emergency Call

Press: Move directly to menu

item next screen
In text entry, enter letters,
numbe rs or symbols
In text entry, press 1 for
punctuation mark

Press/hold: Go to My Favorites
Press/hold 9: Emergency Call

Press: Enter * Press: To change case in text

entry

Press: Enter 0 Press:

Go to 10th menu

selection.

In text or numeric

entry, enter 0. In T9

®

Quick

Type, select next word

Press/hold:

To register a

My Favorites entry

Not active Press: For space

6

Display Indicators – Voice Mode and General

The display window can display up to eight lines of characters plus one
row of special display indicators or icons. The display window in standby
Voice Mode:

Special icons that appear in the display:

Voice M ode

General (Voice and Data)

Voice Mail Displays when a PCS voice mail message

has been received and stored

Text Message Displays when a PCS text message has

been received and stored

Digital Indicates digital voice network available;

if not displayed, phone is operating on

analog network
Off Hook Conversation
Call Lists Dialed, received and missed calls listed
Phonebook View local names and numbers

Signal Strength Six levels indicate the strength of the re-

ceived signal–signal ind icator for network

on which phone is currently registered
All Alerts Off All audio alerts are muted
Some Alerts Off Ringer a nd/or message alert muted.

Example: if ring volume=0, this icon

appears
Vibrate Alert Vibrate alert on (available only if vibrate

battery in s t al led )
Battery Level Three levels indicate the charge level (low,

medium, high)
Scroll Icon More menu information up/down in menu

screen; in some cases, move left/right

7

Display Indicators – Data Mode

An example of the display window for the brow ser Home Page:

Special icons that appear in the display:

Data Mode

Secure Secure mode
Message Alert Data alert received
CDPD Registered Packet data network available – registered
CDPD Not

Registered

Packet data network not available –
not registered

8

Getting Started

Charging the Battery

The battery must be fully charged before using the phone for the first
time. If it is a new battery, three complete charge and discharge cycles
must be performed to ensure peak operation.

1. Make sure the battery is properly installed on your phone.

2. Connect the AC Adapter to t h e socket on the side of the phone.
Connect the other end to a standard wall outlet. The battery level

indicator flashes during charging.

3. Disconnect the AC Adapter when the Battery Full message displays.

Recharging the Battery

When the battery needs to be recharged, three short tones sound. The
Low Battery icon and message flash on the display.

Connect the AC Adapter to the socket on the side of the
phone.

Connect the AC Adapter to a standard wall outlet. The
battery begins charging when the AC adapter is connected
to the phone.

If the phone is left on despite a low battery alarm, the phone automatically shuts itself off to pro­tect the battery from over-discharging.

1

2

✱

9

Attaching the Battery

Removing the Battery

Charging Times

The following table shows the approximate battery recharging times
using the AC Rapid Charging Adapter.

• Battery charging suspends when a call is in progress.

• The NiMH battery performance varies with the condition and history
of the battery.

• The phone can be used while charging but it will increase t he
charging time.

Insert the bottom of the battery int o the recess on the back
of the phone.

Push inward until the locking catch snaps securely into
place.

Turn the phone off.
Push up the locking catch and remove the battery.

Battery Type Charging time

880 mAh NiMH Standard 120 minutes
880 mAh NiMH Vibrating 120 minutes
1500 mAh NiMH Extended 200 minutes

1

2

1
2

10

Battery Use Times

Standard Battery

Voice Digital Voice Analog CDPD

Extended Life and Vibrating Battery

Voice Digital Voice Analog CDPD

Prolonging the Life of your Battery

• Allow your battery to discharge fully once a week. A charged battery
discharges on its own after one month of no use.

• To discharge the battery, leave the phone on until it shuts itself off.

If you do not plan to use your phone for more than a month, remove the
battery and store it in a cool, dry place.

Standby 120 hr Standby 10 hr Standby 120 hr
Talk 120 min Talk 70 min Data Mode 7 hr

Standby 200 hr Standby 17 hr Standby 200 hr
Talk 200 min Talk 120 min Data Mode 12 hr

11

Basic Phone Op erations

Turning On the Phone

Standby Display — Voice Mode

The screen displays network and/or service provider, signal strength and
battery level indicators, and Call Lists and Phonebook softkey shortcuts.

Press softkey to go to Call Lists.
Press softkey to go to the Phonebook.
Press or on the Express Key to go to volume control.

To quickly return to the standby screen at any time while in Voice Mode
(except during conversation), press and hold the key.

Making a Call

The off hook indicator displays and you’ll hear a network tone. When
the call is connected, the dialed number and the time and date display.

To store the dialed number in the Phonebook, press Store left softkey
before pressing the Send key to connect the call.

To cancel the call before it connects, press either Cancel left softkey or

key.

Press and hold key. A beep tone sounds.
If the phone is locked, -A u to Lock- will display. Enter the

4-digit code and press OK left so ftk ey.

See page49 for more details on Auto Lock.

Key in the telephone number you wish to call.
Correct any mistakes by pressing . Press and hold this
key to clear the entire entry.

Press .

1
2

✱

1

2

12

Muting

While talking, to mute the microphone, press Mute left softkey. To turn
the microphone back on, press Talk le ft so ft key .

Conversation Options

When talking, press Options right softkey to Send DTMF tones, use the
Scratchpad, Store the number, or view your Own Number. See Con-
versation mode on page 29 for details.

Answering a Call

The ringer alerts you to an incoming call and the caller’s name and
number are displayed if they are stored in your Phonebook. Press any key
to mute ring tone.

To answer the call,

Ending a Call

Turning Off the Phone

A turn -off tone will sound and power OFF will briefly display.

Unanswered C alls

If you miss a call, the phone saves the number in an unanswered call log
and alerts you by displaying Missed Call. See page 24.

Press Answer left softkey or .

If Any Key Answer is enabled in Preferences - Call Setup menu, you can answer by pressing any
key except the right softkey, End/Back key and Mode key.

While in Conversation Mode or in the Main Menus, press and hold

to end a call. In all other cases, press to end a call. The

standby screen will display.

Press and hold .

✱

13

Voice Mail

When you have new voice mail, a tone alerts you. The screen displays
and indicates the number of new messages waiting in your voice mailbox.

To access your Voice Mailbox,

Setting up a Voice Mailbox

You can have up to three voice mailboxes, including the AT&T PCS voice
mail service, which is set up as the first entry.

To add a Voice Mailbox,

Edit Voice Mailbox

To edit the name, number, or PIN, or delete an existing Voice Mailbox,

Press and hold or press and select 2 Messages,
1 Voice Mail. If you are using more than one mailbox, a list
will display.

Press or to select a mailbox, or press the corresponding
number displayed in the menu.

Press either Call left softkey or to access the selected
mailbox.

Press and select 2 Messa ge s, 1 Voice Mail, 2 Setup,
then press Add right softkey.

Enter your 8-digit Security Code. Default code is 00000000.
Enter the Access Number, PIN number and name for the

mailbox and press OK left softkey.
Press either Call left softkey or to access the new mailbox.

Press and select 2 Messa ge s, 1 Voice Mail, 2 Setup.
Select the mailbox you wish to change and press Edit

softkey.
Enter your 8-digit Security Code. Default code is 00000000.
Select Edit Name, Edit Number, Edit PIN, or Delete, then

press OK softkey.
To enter text, press right softkey to select input mode. The

most recently used mode is displayed over the right softkey.
To change mode, cycle through the right softkey until
desired text entry mode is displayed. When finished, press
OK softkey.

See Entering Text, page34.

1

2

3

1

2
3

4

1
2

3
4

5

✱

14

Text Messages (SMS)

Text messages are sent via an SMS (Short Message Service) message
center provided by your service provider. When you receive a text
message, a tone alerts you. The screen displays and indicates the
number of unread messages. You can receive up to 30 text messages
with up to 245 characters each.

To access your Text Messages,

To delete a Text Messa ge ,

To view new Text Messages immediately,

To skip Text Messages,

Menu Help

To view a help message describing the meaning of a particular menu
option, press and hold while you are at the desired menu option.

For example,

Press and hold or press and select 2 Messages,
2 Msg Inbox.

At the text message list screen, to select a message, either
press the number key associated with the message or press

or to scroll to desired message. Unread messages are

marked with *, and urgent unread messages marked with .
If you scroll up or down, press View left softkey and the

selected text message will display.

Press Delete right softkey.
At the next screen, press Yes. The message will be deleted

and the remaining messages will display.

Press View left softkey or press and hold .

Press Skip right softkey or to view later.

Press , select 3 Status , and scroll to 4 Accumulated
Talk Time.

Press and hold . A help message describing Accumulated
Talk Time displays.

To return to the menu, press OK softkey or .

1

2

3

1
2

1

2

3

15

Safety Information

EXPOSURE TO RADIO FREQUENCY SIGNALS

Your wireless handheld portable telephone is a lo w power radio trans­mitter and receiver. When it is ON, it receives and also sends out radio
frequency (RF) signals.

In August 1996, the Federal Communications Commissions (FCC) adopt­ed RF exposure guidelines with safety levels for hand-held wireless
phones. These guidelines are consistent with the safety standards previ­ously set by both U.S. and international standards bodies:

*ANSI C95.1 (1992)
*NCRP Report 86 (1986)
*ICNIRP (1996)

*American National Standards Institute; National Council on Radiation Protection and Measure­ments; International Commission on Non-Ionizing Radiation Protection

Those standards were based on comprehensive and periodic evaluations
of the relevant scientific literature. For example, over 120 scientists, en­gineers, and physicians from universities, government health agencies,
and industr y reviewed the available body of re search to d evelop the ANSI
Standard (C95.1).

The design of your phone complies with the FCC guidelines (and those
standards).

Your phone has been tested and meets the limits for radio frequency (RF)
exposure set by the FCC for normal handheld use next to the ear or worn
on the body using a Mitsubishi brand belt clip accessory specified for this
phone, and used as intended. Operation of the phone in other situations
such as in shirt pockets or non-Mitsubishi brand belt clips or holsters, or
operation with the back of the phone closer than 13 mm (0.51”) to the
body, have not been tested. Therefore operation of the phone in non­tested situations may not meet the limits for RF exposure set by the FCC
and must be avoided.

ANTENNA CARE

Use only the supplied or an approved replacement antenna. Unauthor­ized antennas, modifications, or attachments could damage the phone
and may violate FCC regulations.

PHONE OPERATION

NORMAL POSITION: Hold the phone as you would any other telephone
with the antenna pointed up and over your shoulder.

16

EFFICIENT OPERATION: For your phone to operate most efficiently, do
not touch the antenna unnecessarily when the phone is in use. Contact
with the antenna affects call quality and may cause the phone to operate
at a higher power level than otherwise needed.

DRIVING

Check the laws and regulations on the use of wireless telephones in the
areas where you drive. Always obey them. Also, if using your phone while
driving, please:

• Give full attention to driving - driving safely is your first responsibility.

• Use hands-free operation, if available.

• Pull off the road and park before maki ng or answeri ng a call if drivi ng

conditions so require.

ELECTRONIC DEVICES

Most modern electronic equipment is shielded from RF signals. However,
certain electronic equipment may not be shielded against the RF signals
from your wireless phone.

Pacemakers
The Health Industry Manufacturers Association recommends that a
minimum separation of six (6”) inches be maintained between a
handheld wireless phone and a pacemaker to avoid potential
interference with the pacemaker. These recommendations are
consistent with the independent research by and recommendations
of Wireless Technology Research.

Persons with pacemakers:

• Should ALWAYS keep the phone more than six inches from their
pacemaker when the phone is turned ON

• Should not carry the phone in a breast pocket

• Should use the ear opposite the pacemaker to minimize the poten­tial for interference

• If you have any reason to suspect that interference is taking place,
turn your phone OFF immediately

Hearing Aids
Some digital wireless phones may interfere with some hearing aids.

In the event of such interference, you may want to consult your serv­ice provider (or call the customer service line to discuss alterna tives).

Other Medical Devices
If you use any other personal medical device, consult the manufac­turer of your device to determine if they are adequately shielded
from external RF energy. Your physician may be able to assist you in
obtaining this information.

17

Turn your phone OFF in health care facilities when any regulations
posted in these areas instruct you to do so. Hospitals or health care
facilities may be using equipment that could be sensitive to external
RF energy.

Vehicles
RF signals may affect improperly installed or inadequately shielded
electronic systems in motor vehicles. Check with the manufacturer or
its representative regarding your vehicle. You should also consult the
manufacturer of any equipment that has been added to your vehicle.

Posted Facilities
Turn your phone OFF in any facility where posted notices so require.

AIRCRAFT

FCC regulations prohibit using your phone while in the air.
Switch OFF your phone before boarding an aircraft.

BLASTING AREAS

To avoid interfering with blasting operations, turn your phone OFF when
in a “blasting area” or in areas posted “Turn off two-way radio.” Obey all
signs and instructions.

POTENTIALLY EXPLOSIVE ATMOSPHERES

Turn your phone OFF when in any area with a potentially explosive at­mosphere and obey all signs and instructions. Sparks in such areas could
cause an explosion or fire resulting in bodily injury or even death.

Areas with a potentially explosive atmosphere are often but not always
clearly marked. They include fueling areas such as gasoline stations; be­low deck on boats; fuel or chemical transfer or storage facilities; vehicles
using liquefied petroleum gas (such as propane or butane); areas where
the air contains chemicals or particles, such as grain, dust, or metal pow­ders; and any other area where you would normally be advised to turn
off your vehicle engine.

For Vehicles Equipped with Air Bags

An air bag inflates with great force. DO NOT place objects, including both
installed or portabl e wireless equipment, in the area over the air bag or
in the air bag deployment area. If in-vehicle wireless equipment is im­properly installed and the air bag inflates, serious injury could result.

18

The U.S. Food and Drug Administration’s Center for Devices
and Radiological Health

Consumer Update on Mobile Phones

FDA has been receiving inquiries about the sa fety of mobile phones,
including cellular phones and PCS phones. The following summarizes
what is known--and what remains unknown--about whether these
products can pose a hazard to health, and what can be done to minimize
any potential risk.

Why the concern?

Mobile phones emit low levels of radio frequency energy (i.e., radio
frequency radiation) in the microwave range while being used. They also
emit very low levels of radio frequency energy (RF), considered non­significant, when in the stand-by mode. It is well known that high levels
of RF can produce biological damage through heating effects (this is how
your microwave oven is able to cook food). However, it is not known
whether, to what extent, or through what mechanism, lower levels of RF
might cause adverse health effects as well. Although some research has
been done to address these questions, no clear picture of the biological
effects of this type of radiation has emerged to date. Thus, the available
science does not allow us to conclude that mobile phones are absolutely
safe, or that they are unsafe. However, the available scientific evidence
does not

demons trate a ny adve rse he alth eff ects as soci ated wi th the u se

of mobile phones.

What kinds of phones are in question?

Questions have been raised about hand-held mobile phones, the kind
that have a built-in antenna that is positioned close to the user’s head
during normal telephone conversation. These types of mobile phones are
of concern because of the short distance between the phone’s antenna-

-the primary source of the RF--and the person’s head. The exposure to RF
from mobile phones in which the antenna is located at greater distances
from the user (on the outside of a car, f or example) is drastically lower
than that from hand-held phones, because a person’s RF exposure
decreases rapidly with distance from the source. The safety of so-called
”cordless phones,” which have a base un it connected to the telephone
wiring in a house and which operate at far lower power levels and
frequencies, has not been questioned.

19

How much evidence is there that hand-held mobile
phones might be harmful?

Briefly, there is not enough evidence to know for sure, either way; how­ever, research efforts are on-going.

The existing scientifi c evidence is conflicting and many of th e studies that
have been done to date have suffered from flaws in their research meth­ods. Animal experiments investigating the effects of RF exposures char­acteristic of mobile phones have yielded conflicting results. A few animal
studies, however, have suggested that low levels of RF could accelerate
the development of cancer in laboratory animals. In one study, mice ge­netically altered to be predisposed to developing one type of cancer de­veloped more than twice as many such cancers when they were exposed
to RF energy compared to controls. There is much uncertainty among sci­entists about whether results obtained from animal studies apply to the
use of mobile phones. First, it is uncertain how to apply the results ob­tained in rats and mice to humans. Second, many of the studies that
showed increased tumor development used animals that had already
been treated with cancer-causing chemicals, and other studies exposed
the animals to the RF virtually continuously--up to 22 hours per day.

For the past five years in the United States, the mobile phone industry has
supported research into the safety of m o bile phones. This research has
resulted in two findings in particular that merit additional study:

1. In a hospital-based, case-control study, researchers looked for an association between mobile phone use and

either glioma (a type of brain cancer) or acoustic neuroma (a benign tumor of the nerve sheath). No statistically
significant association was found between mobile phone use and acoustic neuroma. There was also no association
between mobile phone use and gliomas when all types of types of gliomas were considered together. It should be
noted that the average length of mobile phone exposure in this study was less than three years.

When 20 types of glioma were considered separately, however, an association was found between mobile phone

use and one rare type of glioma, neuroepithelliomatous tumors. It is possible with multiple comparisons of the
same sample that this association occurred by chance. Moreover, the risk did not increase with how often the
mobile phone was used, or the length of the calls. In fact, the risk actually decreased with cumulative hours of
mobile phone use. Most cancer causing agents increase risk with increased exposure. An ongoing study of brain
cancers by the National Cancer Institute is expected to bear on the accuracy and repeatability of these results.

1

2. Researchers conducted a large battery of laboratory tests to assess the effects of exposure to mobile phone RF on

genetic material. These included tests for several kinds of abnormalities, including mutations, chromosomal aber­rations, DNA strand breaks, and structural changes in the genetic material of blood cells called lymphocytes. None
of the tests showed any effect of the RF except for the micronucleus assay, which detects structural effects on the
genetic material. The cells in this assay showed changes after exposure to simulated cell phone radiation, but only
after 24 hours of exposure. It is possible that exposing the test cells to radiation for this long resulted in heating.
Since this assay is known to be sensitive to heating, heat alone could have caused the abnormalities to occur. The
data already in the literature on the response of the micronucleus assay to RF are conflicting. Thus, follow-up
research is necessary.

2

20

FDA is currently working with government, industry, and academic
groups to ensure the proper follow-up to these industry-funded research
findings. Collaboration with the Cellular Telecommunications Industry
Association (CTIA) in particular is expected to lead to FDA providing
research recommendations and scientific oversight of new CTIA-funded
research based on such recommendations.

Two other studies of interest have been reported recently in the literature:

1. Two groups of 18 people were exposed to simulated mobile phone signals under laboratory conditions while they
performed cognitive function tests. There were no changes in the subjects’ ability to recall words, numbers, or
pictures, or in their spatial memory, but they were able to make choices more quickly in one visual test when they
were exposed to simulated mobile phone signals. This was the only change noted among more than 20 variables
compared.

3

2. In a study of 209 brain tumor cases and 425 matched controls, there was no increased risk of brain tumors
associated with mobile phone use. When tumors did exist in certain locations, however, they were more likely to
be on the side of the head where the mobile phone was used. Because this occurred in only a small number of
cases, the increased likelihood was too small to be statistically significant.

4

In summary, we do not have enough information at this point to assure
the public that there are, or are not, any low incident health problems
associated with use of mobile phones. FDA continues to work with all
parties, including other federal agencies and in dustry, to assure that
research is undertaken to provide the necessary answers to the
outstanding questions about the safety of mobile phones.

What is known about cases of human cancer that have
been reported in users of hand-held mobile phones?

Some people wh o have u sed mobile phone s have bee n dia gnosed with bra in
cancer. But it is important to understand that this type of cancer also occurs
among people who h ave not used mobile p hones. In fact , brain cancer occ urs
in the U.S. population at a rate o f about 6 new cases per 100,00 0 people each
year. At that rate, assuming 80 million users of mobile phones (a number
increasing at a rate of about 1 million per mont h), about 4800 cases of brain
cancer woul d be exp ected eac h year among thos e 80 mil lion peo ple, whe ther
or not they used their phones. Thus it is not possible to tell whether any
individual’s cancer arose because of the phone, or whet her it wou ld have
happened anyway.

A key que stion is whether the risk of getting a part icular form of cance r is
greater among people who use mobile phones than among the rest of the
population. One way to answer that question is to compare the usage of
mobile phones among people with brain cancer with the use of mobile
phones among appropriately matched people without brain cancer. This is

21

called a c ase-con trol st udy. Th e current case-c ontrol study o f brain c ancers by
the National Cancer Institute, as well as the follow-up research to be
sponsored by industry, will begin to generate this type of information.

What is FDA’s role concerning the safety of mobile
phones?

Under the law, FDA does not review the safety of radiation-emitting con­sumer products such as mobile phones before marketing, as it does with
new drugs or medical devices. However, the agency has authority to take
action if mobile phones are shown to emit radiation at a level that is haz­ardous to the user. In such a case, FDA could require the manufacturers
of mobile phones to notify users of the health hazard and to repair,
replace or recall the phones so that the hazard no longer exists.

Although the existing scientific data do not justify FDA regulatory actions
at this time, FDA has urged the mobile phone industry to take a number
of steps to assure public safety. The agency has recommended that the
industry:

 support needed research into possible biological effects of RF of the

type emitted by mobile phones;

 design mobile phones in a way that minimizes any RF exposure to the

user that is not necessary for device function ; and

 cooperate in providing mobile phone users with the best possible

information on what is known about possible effects of mobile phone
use on human health.

At the same time, FDA belongs to an inter agency working group of the
federal agencies that have responsibility for different aspects of mobile
phone safety to ensure a coordinated effort at the federal level.

These agencies are:

 National Institute for Occupational Safety and Health
 Environmental Protection Agency
 Federal Communications Commission
 Occupational Health and Safety Administration
 National Telecommunications and Information Administration

The National Institutes of Health also participates in this group.

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In the absence of conclusive information about any
possible risk, what can concerned individuals do?

If there is a risk from these products--and at this point we do not know
that there is--it is probably very small. But if people are concerned about
avoiding even potential risks, the r e are simple steps they can take to do
so. For example, time is a key factor in how much exposure a person re­ceives. Those persons who spend long periods of time on their hand-held
mobile phones could consider holding lengthy conversations on conven­tional phones and reserving the hand-held models for shorter conversa­tions or for situations when other types of phones are not available.

People who must conduct extended conversations in their cars every day
could switch to a type of mobile phone that places more distance
between their bodies and the source of the RF, since the exposure level
drops off dramatically with distance. For example, they could switch to

 a mobile phone in which the antenna is located outside the vehicle,
 a hand-held phone with a built-in antenna connected to a different

antenna mounted on the outside of the car or built into a separate
package, or

 a headset wi th a remote antenna to a mobile ph one carrie d at the wai st.

Again, the scientific data do not

demonstrate that mobile phones are
harmful. But if people are concerned about the radio frequency energy
from these products, taking the simple precautions outlined above can
reduce any possible risk.

Where can I find additional information?

For additional information, see the following websites:

Federal Commu nicatio ns Commission (FCC)

RF Safety Program
(select ”Information on Human Exp o sure to RF Fields from Cellular and PCS Radio
Transmitters”):
http://www.fcc.gov/oet/rfsafety

World Health Organization (WHO)

International Commission on Non-I onizing Radiation Protection (select Qs & As):
http://www.who.int/emf

United Kingdom, National Radiological Protection Board

http://www.nrpb.org.uk

Cellular Te lecommunications Industry Association (CTIA)

http://www.wow-com.com

U.S. Food and Drug Administration (FDA)

Center for Devices and Radiological Health:
http://www.fda.gov/cdrh/consumer/index.html

23

1. Muscat et al. Epidemiological Study of Cellular Telephone Use and Malignant Brain Tumors. In: State of the Science Sym­posium;1999 June 20; Long Beach, California.

2. Tice et al. Tests of mobile phone signals for activity in genotoxicity and other laboratory assays. In: Annual Meeting of the
Environmental Mutagen Society; March 29, 1999, Washington, D.C.; and personal communication, unpublished results.

3. Preece, AW, Iwi, G, Davies-Smith, A, Wesnes, K, Butler, S, Lim, E, and Varey, A. Effect of a 915-MHz simulated mobile
phone signal on cognitive function in man. Int. J. Radiat. Biol., April 8, 1999.

4. Hardell, L, Nasman, A, Pahlson, A, Hallquist, A and Mild, KH. Use of cellular telephones and the risk for brain tumors: a
case-control study. Int. J. Oncol., 15: 113-116, 1999.

Care and Maintenance

This telephone is the product of advanced engineering, design and
craftsmanship and should be treated with care. The suggestions below
will help you to enjoy this product for many years.

• Do not expose the phone to any extreme environment where the
temperature or humidity is high.

• Do not expose or store in cold temperatures. When the phone warms
up after power on, to its normal temperature, moisture can form
inside where it may damage the electrical parts.

• Do not attempt to disassemble the phone. There are no serviceable
parts inside that you can replace.

• Do not expose the phone to water, rain or liquids. It is not waterproof.

• Do not abuse this phone by dropping, knocking or violent shaking.
Rough handling can damage it.

• Do not clean the phone with strong chemicals or solvents. Wipe it
only with a soft, slightly dampened cloth.

• Do not place the telephone near computer discs, credit or travel cards
or other magnetic media. The information contained on discs or cards
may be affected by the phone.

• Do not connect incompat ible products. The use of third party
equipment or accessories, not made or authorized by Mitsubishi
Wireless Communications Inc., may be a safety risk.

• Do not remove the labels. The numbers on it are important for service
and other related purposes.

• Contact your service provider if you notice a defect.

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Voice Mode F eatures

Dialing Stored Numbers

Any number stored in the phone’s memory can be recalled to the display
and dialed.

...from the Phonebook

...from th e Di aled Calls List

The last 10 numbers you have dialed are stored in the Call Lists.

...from the Received Calls List

The last 10 numbers you have answered are stored in the Call Li sts.

...from th e Mi ssed Calls Li st

The last 10 numbers you have missed are stored in the Call Lists.

...Last Nu mb er Dialed

Press the softkey to enter the Phonebook list.
Press up or down arrow to scroll to the desired number.
Press Send to di al the number. Press Cancel softkey to

cancel the call before it connects.

See Phonebook, page 38.

Press the softkey to enter the Call Lists menu.
Select Dialed Calls and press OK softkey.
Press up or down arrow to scroll to the desired number.
Press Send to dial the number.

Press the softkey to enter the Ca ll Lists menu.
Select Received Calls and press OK softkey.
Press up or down arrow to scroll to the desired number.
Press Send to dial the number.

Press the softkey to enter the Call Lists menu.
Select Missed Calls and press OK softkey.
Press up or down arrow to scroll to the desired number.
Press Send to dial the number.

Press Send key without inputting a numbe r. The screen
displays the last number you have dialed.

Press Send to dial the number.

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Super Speed Dialing

You can super speed dial numbers stored in Phonebook Locations 01-09
by pressing only one digit key. (Note: 09 can be super speed dialed only
if Emergency Call is not enabled.)

Use either of the following two methods.

Speed Dialing

Speed di aling i s an easy way to dia l stor ed number s. You c an stor e
up to 99 numbers and n ames f or spee d dial on your ph one.

Emergency Calls

When Emergency Call is enabled in the Call Setup menu, you can super
speed dial an emergency number with one key:

• In Voice Mode (except while in conversation, or receiving or
dialing calls); and

•In Data Mode.

• Emergency Call super speed dialing can be enabled/disabled
via the Main Menu. See Call Setup, page 44.

• Emergency Call dialing ignores device lock (Auto Lock) and
any call restriction setting.

• If you press and hold the 9 digit key while in Data Mode, the
phone automatically switches to Voice Mode and makes the
emergency call.

• If Key Guard is turned on, press and hold for 3 seconds to
super speed dial the emergency call. Dialing 9-1-1 and press­ing Send key will not work when Key Guard is turned on.

Press and hold the digit key; or
Press the digit key, then press Send.

See Phonebook, page 38, to view memory Location numbers.

Enter the 2-digit Location number of the phone number you
wish to dial. The 2-digit number will appear on the display.

Press Send to dial. Or press Recall softkey to display full
number, and then press Send to dial.

See Phonebook, page 38, to view memory Location numbers.

Press and hold (3 seconds) and the call will go through.

When Emergency Call super speed dialing is enabled, you will not be able to super speed dial
entry 09 in the Phonebook.

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Sounds On/Off

To silence all incoming ring, alert and key tones,

To quickly turn off ring of an incoming call,

To turn on audio or vibrate alerts,

To turn Ringer or Message Alerts on or off, see page 42.

Mute/Unmute

To mute or unmute your phone’s microphone during conversation,

Adjusting Volume

To adjust the volume of various sounds in voice standby or during
conversation,

Press and select 5 Sounds On/Off . The sounds are
immediately turned On or Off.

When all sounds are turned Off, displays.
When all sounds are turned On, the icon disappears.

Press up or down arrow key.

Press and select 4 Preferences.
Select 1 Service Alerts.
Select 5 Alert Mode.
Select Audio Onl y, Vibrate Only, or Both.
Press OK softkey to activate. If Vibrate Only or Both is
selected, displays.

The Vibrate Alert is available only if a vibrating battery is installed. See page43.

To mute, press Mute left softkey. The microphone turns off.
To unmute, press Talk left softkey. The microphone turns

back on.

Press and select 4 Preferences, 3 Volume.
Select Ringer, Msg Al er t s, Keypad or Earpiece.
Press up or down arrow to adjust sound level from 0 to 7

(ringer, message alert, keypad) or 1 to 7 (earpiece).

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Shortcut to adjust volume,

Sending DTMF Tones

You can send Dual Tone Multi-frequency (DTMF) tones to communicate with
computerized systems, such as answering machines, voice mail or banking­by-phone. A DTMF is a digit or string of digits that produces tone signals.
You can store DTMF strings the same way you store phone numbers.

Manually

To send individual DTMF tones directly from the keypad during conversation,

Automatically

To send a consecutive string of DTMF tones during conversation,

Pause Feature

Telephone numbers and a sequence of DTMF tones can be entered in the
display or sto r ed i n memor y t ogeth er if th ey ar e se p ar at ed by a “Pa us e. ”

To insert a Pause,

Any number of Pauses, with a maximum of 32 characters, can be stored
together.

Press up or down arrow. The Ringer volume adjustment
appears.

Either press up or down arrow to adjust Ringer, or press
Alert right softkey to scroll to Message Alerts, Keypad, and
Earpiece volume adjustments. Press OK softkey.

Press the required DTMF keys (0-9, * and # keys). The tones will
be heard in the earpiece and sent immediately.

Press Options softkey and select Send DTMF.
Enter the D TMF numbers by using the keypad.
Press OK softkey. After the tones have been sent the normal

conversation screen displays.

Enter the number you wish to dial.
To enter a pause, press Options softkey and select Insert

Pause. The P character appears.
Enter additional DTMF tones or phone numbers as needed.
Repeat step 2 to Inse rt Pause where needed.
Press Send to dial the number.
After the call connects, press Send to transmit each DTMF

string.

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Memory Link Feature

To recall DTMF from memory,

Calling Card Calling

The MobileAccess™ T250 phone supports up to three Calling Cards, with
the access number, phone number and card number sequences used by
major Calling Card services.

Setup

To set up the Calling Card feature,

Enter the number you wish to dial.
Press Options softkey and select Memory Link. The M

character appears.
Enter the 2-digit Phonebook Location number for the DTMF

string you want to send.
Enter additional DTMF tones or phone numbers as needed

or repeat steps 2 and 3 as needed.
Press Send to dial the number.
After the call connects, press Send to transmit each DTMF

string.

Press and select 4 Preferences, 2 Call Setup.
Select 2 Calling Cards.
Enter Security Code and press OK softkey. If the Security

Code is accepted as correct, press Setup softkey in the next
screen. (If you already have three Calling Cards stored, Set-
up will not appear on the screen.)

Enter the Calling Card name, up to 32 characters. (See Enter­ing Text, page 34.)

Select one of the following sequences of numbers to be sent:

• Access number>phone number>card number
(including PIN)

• Access number>card num ber (including PIN)>phone
number

• Prefix number>phone number>card number

The screen prompts you to enter each number in your se­quence and press OK softkey. A screen will display indicating
that your Calling Card is stored.

To exit the menu, press left softkey or End/Back key.

See Calling Card Calling in the Call Setup menu, page45.

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Add/Edit/Delete Calling Card Setup

You can add, delete and edit Calling Cards in the Calling Cards menu
screen.

Calling Card Dialing

To initiate a Calling Card call,

Conversation Mode

Conversation Mode is activated when you answer a call. Press Options
softkey to display the Options menu, which allows you to perform the
following functions:

Send DTMF

Send out a string of DTMF tones.

Scratchpad

Use the phone as a memo pad to store numbers during a conversation.

Press and select 4 Preferences, 2 Call Setup.
Select 2 Calling Cards.
Enter Security Code and press OK softkey. Select desired

Calling Card entry.
Select Add, Delete, or Edit softkey. If you already have

three Calling Cards stored, Add will not appear.

Enter the phone number you wish to dial.
Press and hold Send key. Phone will dial the access number

of the selected Calling Card.
The Calling Card service operat or will tell you whe n to press

the Send key.

Press Options softkey and select 1 Send DTMF.
Press desired keys that you want to transmit. Press Clear key

to erase a d igit, or pr ess and hold Clear key to erase all d igits.
Press OK softkey to transmit.

Press Options softkey and select 2 Scratchpad.
Enter numbers you wish to store. Tones will not be heard.
Press OK softkey.

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Store

Store the displayed phone number in your Phonebook.

Own Number

To view your phone number,

While in Conversation Mode, you can access the phone’s Main Menu and
perform all functions except the following:

• Enable/disable Privacy Tone

• Set Call Restrictions

• Generate key exchange with data gateway (Encryption)

•Reset Timers

•Reset Calls

• Access Diagnostics (Data Mode)

• Access Systems (Data Mode)

• Access Show URL (Data Mode)

Press Options softkey and select 3 Store.
Caller’s phone number is displayed. Press OK softkey.
Enter name and press OK softkey.
Select desired ring tone and press OK softkey.
Press OK softkey and phone will display the assigned

Phonebook Location number (01-99).
Press OK softkey to return to conversation screen.

Press Options softkey and select 4 Own Number.
Your phon e nu m be r dis plays so yo u ca n r elay it to yo ur

caller.

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