Nec DB4000 User Manual

General safety

Observe ‘Turn off 2-way radio’ signs, such as those near stores of fuel, chemicals or explosives.

Do not allow children to play with the phone, charger or batteries.

A small rubber bung (for antenna socket protection) is included in the carton. Keep this out of reach of small children, for whom it could be hazard.

The operation of some medical electronic devices, such as hearing aids and pacemakers, may be affected if a cellphone is used next to them. Observe any warning signs and manufacturer’s recommendations.

Road safety

You MUST exercise proper control of your vehicle at all times.

The handset or hand-held microphone should not be used while driving. Find a safe place to stop first or use the hands-free kit available.

Do not speak into a hands-free microphone if it will take your mind off the road.

You MUST NOT stop on the hard shoulder of a motorway to answer or make a call, except in an emergency.

Switch off your cellphone at a refuelling point, such as a petrol station, even if you are not refuelling your own car.

Do not store or carry flammable or explosive materials in the same compartment as a radio transmitter, such as a cellphone.

You must not use the phone’s car kit alert device to operate the lights or horn of your vehicle while on a public road.

Electronic vehicle systems, such as anti-lock brakes, speed control and fuel injection systems are not normally affected by radio transmissions. The manufacturer of such equipment can advise if it is adequately shielded from radio transmissions. If you suspect vehicle problems caused by radio transmissions consult your dealer and do not switch on your phone until it has been checked by qualified approved installers.

Third party equipment

The use of third party equipment, cables or accessories, not made or authorised by NEC, may invalidate the warranty of your cellphone and also adversely affect the phone’s operation. For example use only the NEC mains cable supplied with the AC charger.

Service

The cellphone, batteries and charger contain no user-serviceable parts. We recommend that your NEC cellphone is serviced or repaired by an NEC authorised service centre. Please contact your Service Provider or NEC for advice.

Non-Ionising Radiations

The radio equipment shall be connected to the antenna via a non-radiating cable (e.g. coax).

The antenna shall be mounted in a position such that no part of the human body will normally rest close to any part of the antenna unless there is an intervening metallic screen, for example, the metallic roof.

Before you start

Cellphone system structure

It is worth remembering that every time you use your phone, three different organisations are involved:

Service

Network

Provider

Thepeoplethat

make your phone

All the features described in this user guide are supported by your phone . However, for all these features to work, you must have a SIM card (supplied by your Service Provider) that also supports these features. Even if you have a fully featured SIM card, any feature not supported by the Network transmitting your call will not work. This last point is especially important when you are roaming networks (see page 10).

User guide conventions

The following markers are used throughout the user guide to attract your attention:

This type of paragraph will contain details of where to find related information to the topic being explained.

This type of paragraph will contain information worth noting.

The people that supply your SIM card and bills

Thepeoplethat

transmit your calls

This type of paragraph will contain important information often regarding SIM cards, Service Providers and or Network facilities.

GETTING STARTED 1

BASIC CALLS & PHONE USE 4

CARING FOR BATTERIES 12

SELECTING FEATURES 14

SETTING UP YOUR PHONE 16

STORING & RETRIEVING NUMBERS 26

TEXT ENTRY & NUMBER EDITING 36

SECURITY 40

DIVERTING & CONTROLLING INCOMING CALLS 46

MESSAGES & VOICE MAIL 50

Getting Started

This cellphone is a dual band digital type designed for use on a Global System for Mobile Communications (GSM) network. GSM networks are installed and planned for many countries throughout Europe and operate on two frequencies: 900MHz (known as GSM900 or just GSM) and 1800MHz (known as GSM1800 or PCN - Personal Communications Network). Your cellphone is capable of working on both of these systems.

This world standard allows you to roam and use your own phone in other countries. You can, if you wish, make and receive all calls as if you were in your home country, with all billing being made via your normal Service Provider.

Preparing the phone

Before you try to use your phone check the following has been carried out.

l Valid SIM card inserted (see below)

Battery charged (see page 13)

l l PIN 1 code entered (if necessary - see page 2)

SIM card

Before using your cellphone you must sign-up with one of the digital network Service Providers. In addition to your subscription details you will receive a personal SIM (Subscriber Identity Module) which is inserted into your phone.

If the SIM card is removed then the phone becomes unusable until a valid SIM is fitted. It is possible to transfer your SIM to another compatible phone and resume your network subscription.

There are two types of SIM, plug-in and full-size, and this phone uses the plug-in type. The screen on your phone will display appropriate messages if no SIM is fitted.

Inserting a SIM

Make sure that the power is off and then remove the battery À & Á to reveal the SIM location.

Slide the catch Â in the direction of the open arrow.

Insert the SIM Ã, ensuring the gold contacts are face down and the notch on the card lines up with the SIM location recess.

Slide the catch in the direction of the lock arrow and replace the battery.

SIM Card

The phone supports a number of

languages and the keyboard symbols have been chosen for world-wide operation.

The digital technology of your NEC GSM

phone helps to ensure that your conversations are kept secure.

If the phone, or the SIM, is lost or stolen

then you should contact your Service Provider immediately in order to bar it from use.

O The SIM card contains personal data such

as your electronic phonebook, messages (see page 50) and also details of the network services you have subscribed to. The phone will not work (except for emergency calls on some networks) unless a valid SIM is fitted.

If the SIM is already fitted, see Start-up on page 2.

If you insert a SIM card other than your own, information such as call logs may be lost.

Catch

Start-up

Switching the phone on

Hold down the power key for about a second, to switch on. The screen usually displays the greeting

message (see page 24 to change this) and the phone is then in standby, see the Standby screen on page 5.

Switching the phone off

Hold down the power key until the display shows power down message.

PIN 1 code

The SIM card issued by your service provider has a security feature called PIN 1 code protection. The PIN 1(Personal Identification Number) is a number put onto the card by your Service Provider, and is 4 to 8 digits long. Some service providers supply SIM cards which will cause your phone to prompt for a PIN 1 code when it is turned on. If this is the case, use the phone’s keypad to enter your code. You can disable this prompt (see page 41).

Greeting message

Powering

down

Please wait

Power down message

Display information

LCD alphanumeric display

This display shows the current network, signal strength, status messages (e.g. Calling...), the current time, and whatever you have keyed in on the phone’s keypad. In addition to this, it also displays the phone’s menu options. Many of the phone’s features are activated using its powerful menu structure (see page 14 on selecting the phone’s features).

LCD Icons

Battery charge level

This icon indicates the amount of charge left in your battery; the more black squares shown the higher the battery charge level (see page 12 for battery care details). This icon will pulse when the battery is being charged.

Call forwarding set to on

This icon indicates your phone is set up to divert incoming calls under the conditions in menu 3 (divert). See page 47 for a full description of call forwarding.

Voice mail waiting

This icon indicates a voice mail message is awaiting your attention (see page 59 for details).

Short message waiting

This icon indicates a short message is awaiting your attention (see page 51 for details).

Call connected

This icon is displayed continuously during a call and will flash if you have a call waiting or if you have a call on hold.

Key lock

This indicates the keypad is locked (see page 41 for details).

You may need to charge the battery before

using your cellphone. If the phone gives no response when switched on, read the information about batteries on page 12.

The greeting message may not be as

indicated if any locks have been set or the wrong SIM has been inserted. Please follow any instructions given, e.g. ‘Return to Service Centre’.

Do not remove the battery to switch your

phone off as this may cause loss of stored information.

UK NETWORK

06:21

Display position of LCD icons

LCD

Alphanumeric

display

LCD icons

Flip options

When the phone’s Flip is active (set to On) it will perform the following functions:

Answer a call when flipped open

Disable Auto key lock when flipped open (if option set - see below)

Cancel or reject a call when flipped shut

Set Auto key lock on when flipped shut (if option set - see below)

Activating the Flip for call control

The active Flip will answer an incoming call or end an active call. To activate the Flip, proceed as follows:

Press 801. The Flip function menu will be displayed.

Press 1 to activate the Flip function or 2 to turn it off.

Activating the Auto key lock function

The Auto key lock function will disable all your phone’s keys when the Flip is closed. To activate or deactivate the Auto key lock function, proceed as follows:

* Press 802. The Auto key lock function menu will be displayed. *

Press 1 to activate the Auto key lock function or 2 to turn it off.

Setting the display to English

If the display is showing any other language than English, proceed as follows:

Even when the Flip function is active, you

can still use the and keys to start or end a call when the Flip is closed (unless the Auto key lock function is ‘on’ see below left).

The Flip function is disabled when a simple

hands free earpiece is plugged into your phone. An incoming call can be answered or diverted using the and keys respectively. Alternatively, calls are automatically answered after three rings if the Autoanswer facility is activated (see page 20).

The Flip function has no effect on the key lock function (see page 41).

Press 871.

Basic calls & phone use

Connecting to the network 5 Receiving/Making/Ending/Unsuccessful calls 5 to 6 Stored numbers 7 Emergency calls 7 Last number redial 7 Earpiece & ringer volume 7 Muting the microphone during a call 8 Own phone number displaying/sending 8 Phone modes 8 International dialling codes 9 Roaming 10 Using your phone with a laptop computer 11

Connecting to the network

Hold down the power key for about a second, to switch on.

After start-up, and correct PIN 1 code entry if necessary, the phone searches for a network. When found, the network name and country are displayed. You also see the time, signal strength, battery strength and any area messages if this facility is enabled (see page 57).

The phone’s LCD display shows the strength of the radio signal that links your phone to the network. A maximum signal is shown by 5 shaded blocks and a minimum signal by 1 block.

Receiving calls

When someone calls your number, the phone’s ringer will sound, if set (see page 19), and the incoming call screen is displayed (see right).

The phone number of the person calling may be displayed in the middle of the screen if the calling line identification (CLI) facility is available and the caller has activated the feature. If the caller’s phone number has been stored in your phonebook along with a name (see page 30), that name will be displayed. If the caller has withheld their identity then the screen will give a message that the incoming number is being withheld.

Searching

Please wait

Linking to network

UK NETWORK

Tue 19 Jan 1999

06:21

Standby screen

If the screen indicates Searching or

No Service you will not be able to

make or receive any normal calls. You may be able to make emergency calls.

Accepting a call

* Press the key or open the Flip (if the Flip option is active - see page 3).

Rejecting a call

Press briefly or close the Flip (if the Flip was already open and the Flip option is active - see page 3).

You also have options for holding calls and diverting calls. These options depend upon your network and your subscription arrangements.

If your cellphone receives a call and you do not answer it, the screen will display the telephone number (or the name if a stored number) of the caller (if available). This information is stored in the unanswered calls list. Up to 10 unanswered calls are stored in this list. The last 10 answered calls are stored in the answered calls list.

01987654321

Answer ?

Incoming call

You can set your phone to answer a call when any key except the key is pressed - see 'Answer key' on page 20. If you are making a call, the phone gives priority to receiving a call unless you have already pressed the key.

See Also: Call waiting & holding (page 48) and Call diverting (page 47).

See Also: Viewing Answered and Unanswered Calls on page 29.

Making basic calls

You make a simple call in the same way as you would with a normal phone, except that you need to press the key after entering the phone number and area STD code. To make international calls you must first enter the international dialling code (see page 9).

Starting a call

Open the Flip (if necessary) and key in the phone number. Check the number on the display.

Use the full STD area code even if you are in the same town. Long numbers will continue on a second line.

Press to send the call.

If you do not wish your number to be displayed on the phone you are calling, turn the send own number feature off (see page 8).

* To abort the call at any time, press briefly or close the Flip (if the Flip option is active - see page 3). The Standby screen

will be displayed.

The display will show you that the system is trying to connect your call and changes as you hear the call established.

When the call is connected the screen displays the number called or your name for the number (if a name has been stored in memory along with the number - see page 30), the duration of this call so far (if the in-call timer feature is enabled - see page 21), and the signal strength.

Correcting mistakes

Use the or key to to scroll through the number then press C to clear individual digits or hold down the C key to completely clear a phone number.

UK NETWORK

Tue 19 Jan 1999

11:42

In standby ready for use

UK NETWORK 0123456789

11:42

Phone number on screen

0123456789

11:42

Trying to connect

Connected

0123456789

11:42

Connected

See also: Phone Number Editing on page

39.

Ending calls

Press (Short press) or close the Flip (if the Flip option is active - see page 3). The phone returns to standby.

Unsuccessful calls

If the call cannot be connected, you will hear a tone. The display will give an appropriate message, and the phone will return to standby. If your phone is set to Autoredial the number will be automatically called again after a short delay (see page 21).

If a connection is broken, such as by a poor radio signal, then the phone returns to standby. You may also get a warning tone.

Always press or close the Flip even if the other person has ended the call first.

If the key is held down, the unit will turn off.

The other

user is

busy

Unsuccessful call

Stored numbers

You can store numbers and names on your phone, and recall these numbers to make calls. The numbers and names are stored on your SIM card.

The following numbers are considered to be stored numbers:

Numbers you have stored yourself

The last 10 outgoing call numbers (redial numbers)

The last 10 incoming answered calls (unless a number was withheld)

The last 10 unanswered calls (unless a number was withheld)

Emergency calls

The standard emergency number of 112 can be used.

Key 112

* Press to connect the call to the local emergency services.

Last number redial

To redial the last number you called:

Ensure the standby screen is displayed and no phone number is shown.

Press the key twice. The last number you dialled will be called (unless the Auto key lock is on - see page 3).

Earpiece and ringer volume

To change the earpiece volume

See Also: Storing and retrieving numbers

on page 26.

O On some networks emergency calls can be

made using the 112 number without a SIM card inserted. In the UK, the number 999 can also be used for emergency services but the phone must contain a valid SIM card.

$See also: Redial facilities on page 28.

Use volume keys during a call. The settings remain at the level last set.

Whilst the phone is ringing, the volume keys on the side of your phone control the ringer volume. At other times the volume keys on the side of your phone control the volume of keypad tones.

Volu me u p

Volume down

Muting the microphone during a call

Press 7 during a call to turn the mute on or off.

Displaying your own phone number

Press with the phone switched on and in standby or in a call. This will display the first number stored on the

SIM.

Press the or key to select from the list of your own numbers, if applicable.

Sending your own phone number

You can send your own phone number when you make a call so it will be displayed on the phone you are calling (CLI).

Mute

01234567890

17:10

Mute during call

You can enter a number of ‘own phone

numbers’ to allow for voice, data and FAX calls etc. To enter and/or edit your own phone numbers, see page 37.

* Press 813. Then 1 to turn CLI on or 2 to turn it off.

Phone modes

Your phone can be set to operate in one of four modes.

Normal

Meeting

In-car

Pocket

These modes are selected from a menu displayed when the key is pressed from an empty standby screen, i.e. with no number displayed (see the table on page 9 for selection details). When a mode is selected, some of your phone’s settings will be altered automatically to suit the situation suggested by the respective mode name. The phone functions altered are as follows:

Ringer volume level

Key volume

Silent mode setting

Vibrator setting

Keypad lock setting

Backlight setting

Autoanswer

Mode selection & settings

The following table shows the selection keys and default settings for each mode.

Normal

(press p 1)

Ringer Volume Medium Medium Medium High

Key volume Medium Medium Medium Medium

Silent mode As set in menu On Off Off

Vibrator As set in menu On Off On

Auto key lock Off Off Off On

Backlight Normal Normal On Normal

Autoanswer As set in menu Off On Off

Meeting

(press p 2)

In-car

(press p 3)

Pocket

(press p 4)

International dialling codes

When you make an international call from any country, you must start by dialling a special international access code.

Your cellphone has the facility to prefix numbers with a '+' symbol, which saves you entering the access code for the country that you are calling from.

To select any other mode when in the

pocket mode the keypad lock will have to be turned off ( 0 ).

Any changes made to these settings

whilst in a mode will be stored and used when that mode is selected again.

Whichever mode is selected when you turn

your phone off will still be selected when you turn your phone on again.

O The Autoanswer function will only work if

your phone is connected to a headset or car kit.

Your phone will automatically dial the correct numbers for each country if you enter the '+' digit as follows:

Entering international dialling codes

With the phone in standby

Hold down 0. The '0' character displayed changes to a '+' character.

You can then enter the country code, area code, and phone number that you wish to call.

The UK country code is always 44, no matter what country you are dialling from. For example, a typical UK number of 01189 123456 is entered as:

+ 44 1189 123456 International country area phone

access code code number

UK NETWORK

+44118912345 6

11:42

International number entry

Roaming

Roaming is a standard feature of the GSM network technology. Roaming allows you to use your phone in many parts of the world and pay all charges through your normal Service Provider.

Your network operator usually has agreements with named networks in other countries. The SIM fitted in your phone can be supplied so that automatic roaming can take place with these named networks. The phone also allows you to set network preferences of your own.

Before leaving your home country you should select any preferences such as call barring or call diverting. Note that you will be charged for calls forwarded to you whilst roaming.

When dialling you will need to add the international access codes when required, so storing all numbers with the codes (such as +44 for the UK) is helpful (see page 9).

Set automatic or manual network selection

* With the standby screen displayed, press 86. The automatic/manual menu will be displayed.

* Press 1 to select automatic network selection or 2 to set manual selection. A confirmation screen will be displayed

momentarily and then the standby screen will be displayed.

View/edit network list

O Before editing your network list, please consult with your service provider.

With the standby screen displayed, press 863.

Use the or key as appropriate until the required network is displayed.

Press the key.

Press the appropriate key to select the required action (see table right).

When your phone is set to manual mode,

you will have to wait while the phone is searching for networks. If several network options are found, use the or key to scroll through the list.

Before you manually select a

network, ensure it is covered under the agreement you have with your service provider.

Action No.

Select 1

Delete 2

Edit code 3

If you select a network to be added to your network list (option 1) but the list is full, you will have to use the or key to select the network to be replaced and then press the key.

Using your phone with a laptop computer

You can use your phone with a laptop computer and a suitable modem to make both FAX and data transmissions. Connect the laptop, modem and your phone as shown below. Consult your IT department or the relevant software documentation to set-up and carry out the following:

Your computer has the correct driver for your modem

The laptop has the relevant fax and data applications loaded

The fax transmission print screen points to the fax driver and not a printer

Make a fax and a data transmission using a standard land line

When both types of transmission have been successful, connect your phone to the output of the modem, turn the phone on and with

the standby screen displayed, use your computer to send either a fax or data When a fax is sent, the number being called will be displayed on the 2nd line of the phone’s LCD display. The top line will display

Fax then Calling...then Connected alternating with Fax call. When the transmission is complete, the

phone’s screen will return to standby. When data is sent, the number being called will be displayed on the 2nd line of the phone’s LCD display. The top line will display

Data then Calling...then Connected alternating with Data call. When the transmission is complete, the

phone’s screen will return to standby.

Land Line

PCMCIA

Direct to cellphone or

optionally via

You can set your phone’s ringer style so

you can distinguish between incoming speech, FAX and data calls (see page 19).

car kit

Software Modem

Caring for batteries

Checking the battery 13 Low battery alarm 13 Changing the battery 13 Charging a battery 13

STANDBY AND TALK TIMES

Your cellphone works closely with the network you are using to provide the services you need, and the standby and talk times achieved will depend on how you use the phone and choices made by the network operator.

In particular, your location within the network, the frequency at which this location is updated, the type of SIM you have, your reception of area or ‘cell broadcast’ messages and the use of Full Rate or Enhanced Full Rate speech, as well as other factors, will affect both standby and talk times.

If you need to maximise the standby time of your cellphone, you may choose to switch on ‘Area Messages Power Save Option’ (see page 57).

IMPORTANT BATTERY CHARGING INFORMATION

Charging a very low battery

The battery’s charge continues to drop after the considerable time after this warning is displayed a trickle charge is used to slowly top-up the battery to the safe level at which ‘fast charging’ can begin. During this time the battery icon will pulse but you will not be able to make or receive a call, or fully power up the phone. Normal operation is resumed once fast charging begins. The phone can be in trickle charge for a few hours before fast charging starts if the battery is left uncharged for some days after the

Battery

warning is displayed.

Recharge Battery warning is displayed. In extreme cases where the battery is left uncharged for some

Recharge

Checking the battery

Check icon at the bottom of the screen

The blocks on the display show the charge of your battery pack.

Full battery power Low battery power

Low battery alarm

When the battery voltage falls below the working level, Recharge Battery is displayed on screen along with a flashing empty battery icon and a warning tone. The phone will automatically power down shortly afterwards.

DO NOT connect a charger or any

other external DC source if the phone's battery is not inserted.

To cancel the battery alarm, press any key

except . The low battery alarm will repeat until the phone automatically switches off.

Changing the battery

Make sure the phone is switched off. Some settings may be lost if the battery is removed while the power is on.

* Slide the battery catch towards the top of the phone À and lift the battery out Á. *

Put the new battery pack in base first then lower it into place Â .

Charging a battery

The charger unit begins to restore the battery power when it is connected to the phone.

Connect the charger plug into the connector at the base of the phone. Check the battery icon is pulsing.

When charging is complete, the battery icon will stop pulsing and trickle charging continues. During charging the battery icon pulses and shows as a solid block when charging is complete. This is also shown when the phone is switched off.

If you need to receive calls, the cellphone can be switched on and left in standby while it is charging, although the total time taken to charge is then increased.

The cellphone is designed to be charged with the NEC equipment listed with the specifications of your phone.

It may take a few seconds for the indication to start.

Using the wrong type of charger

Charger

connector

can be dangerous and

may invalidate any

warranty and approval

given to the cellphone.

Do not connect more

than one charger at

any time. Do not

leave the charger

connected to the

mains supply when

it is not in use.

Selecting features

This section describes how you select and alter the features provided by your phone and the network it is connected to.

Selection overview 15 Menu selection 15 Fastkey selection 15

Menu selection

When using the menu method to select a feature, you just need to scroll through the options on screen and confirm your choice with the

key which is also the ‘send’ key.

Õ at the base of the options indicates there are more to choose from. Use the or keys to scroll through the menu options.

The choice of options available depends on whether the phone is on a call or in standby.

The currently selected option is normally marked by a

Pressing the key will return you to the standby screen.

> whilst the highlighted option will be selected if you press the key.

Fastkey selection

The alternative ‘fastkey’ method of selection lets you jump straight to a menu or function without scrolling through the intermediate menu options. The selections are made by pressing numbers on the keypad which relate to the displayed menus options. This means the required option does not have to be on the screen to be selected.

If you lose track or make a mistake, just press C to return to the previous menu. If you keep pressing C you will return to the standby display.

Fastkey selection example

Using the fastkey selection method, setting the Autoanswer facility on or off can be carried out as follows:

* *

At the start of the section which contains the Autoanswer facility procedure (page 16) an abbreviated form of the fastkey method will be shown as follows:

Press 82. The Autoanswer on/off menu will be displayed. The currently selected option will have a >next to it.

Press 1 to set Autoanswer to on or 2 to set Autoanswer to off. The appropriate Autoanswer confirmation screen will be displayed momentarily and then the standby screen will be displayed.

1 Messages

2 View calls 3 Divert Õ select

Menu with extra options

Redial

1On

2>Off

select

Redial Off current option

The instructions in this user guide usually

make use of the fastkey method and, where applicable, the fastkey selection for a function is shown at the beginning of each section.

Autoanswer 8 2 20

Setting up your phone

Clock/alarm set 6 17 Ringer volume 7 3 19 Ringer style 7 4 19 Silent mode 7 1 19 Vibration alert (option) 7 6 19 Send tones 7 5 20 Answer key 8 3 20 Autoanswer 8 2 20 Autoredial 8 4 21 Call timer/Advice of Charge (AoC) 5 21/23 Greeting message 8 8 24 Language setting 8 7 24

Backlight functions 8 25

Clock/alarm set

Clock set

Your phone has the ability to store the time and date. This information is displayed, in 12 or 24 hour format (see below), on the standby screen and can be used to trigger an alarm (see page 18 for alarm set-up). To set the time and date, proceed as follows:

Press 61. The clock set screen will be displayed.

When the clock set screen is entered, the first hour digit can be altered by pressing either the or key. Alternatively,

the required digit on the keypad can be pressed. If the digit does not need to be altered, press the key so the second hour digit can be altered.

* Alter the digit if necessary, and then use the or key as appropriate to move to the next value to be altered.

The following values can ONLY be altered by pressing either the or key.

l am/pm indicator (where applicable) l Month name l Year

12:34

Mar 10 1999

ÑmoveÒ

Õset Done

Clock set screen

* When you have set the clock to the required time and date, press the key. The clock set message will be displayed

momentarily and then the standby screen will be displayed.

12/24 hour set

To set the phone’s clock display to either 12 or 24 hour format, proceed as follows:

* *

Press 63. The 12/24 hour menu screen will be displayed. The currently selected option will have a >next to it.

Press 1 for 12 hour or 2 for 24 hour. The appropriate confirmation screen will then be displayed momentarily before the standby screen is displayed.

Clock set message

12/24 hour

1>12 hour

2 24 hour

select

12/24 hour selection screen

+ 45 hidden pages

Nec DB4000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual