NEC AT-50 User manual

AT-50 USER GUIDE
GVT-053680-001
Issue 2.0
December, 2018
Caller ID Business Telephone

IMPORTANT NOTICE
i
IMPORTANT NOTICE
Liability Disclaimer
NEC Corporation reserves the right to change the specifications, functions, or features, at any time,
without notice.
NEC Corporation has prepared this document for use by its employees and customers. The
information contained herein is the property of NEC Corporation and shall not be reproduced without
prior written approval from NEC Corporation. All brand names and product names on this document
are trademarks or registered trademarks of their respective companies.
Copyright 2018
NEC Corporation
Package Contents
Check the contents of package for the following items. If any item is missing or damaged, please
consult the dealer you purchased.

IMPORTANT NOTICE
ii
SAFETY INSTRUCTIONS
When using this telephone, basic safety precautions should always be taken to reduce
the risk of fire, electric shock, and injury to persons, by doing the following:
1. Read and understand all instructions.
2. Follow all warnings and instructions marked on the product.
3. Do not use this product near water, for example, near a bathtub, wash bowl, kitchen sink,
or laundry tub, in a wet basement, or near a swimming pool.
4. Do not place this product on an unstable cart, stand, or table. The product may fall,
causing serious damage to the product.
5. Slots and openings in the cabinet and the back or bottom are provided for ventilation. To
protect it from overheating, these openings must not be blocked or covered. The
openings should never be blocked by placing the product on a bed, sofa, rug, or other
similar surface. This product should never be placed near or over a radiator or heat
register. This product should not be placed in a built-in installation unless proper
ventilation is provided.
6. Never push objects of any kind into this product through cabinet slots as they may touch
dangerous voltage points or short out parts that could result in a risk of fire, electric
shock, or damage to the product itself. Never spill liquid of any kind on the product.
7. To reduce the risk of electric shock, do not disassemble this product. The product should
be taken to a qualified service agent if service or repair work is required. Opening or
removing covers may expose you to dangerous voltages or other risks. Incorrect
reassembly can cause electric shock when the product is subsequently used.
8. Avoid using a telephone during an electrical storm. There may be a remote risk of electric
shock from lightning.
9. Do not use the telephone to report a gas leak in the vicinity of the leak.
10. Please keep this unit away from equipment that uses radio waves or microwaves, (e.g. a
portable radio or microwave oven). These may cause improper operation.
11. The maximum level setting for the Receive Volume Control should only be used by
hearing impaired individuals, otherwise hearing damage may occur.

iii
TABLE OF CONTENTS
IMPORTANT NOTICE............................................................................................................ i
FACE LAYOUT, KEY AND PARTS...................................................................................... 1
INSTALLATION.................................................................................................................... 3
Connecting the Telephone Network.............................................................................................. 3
Wall Mounting................................................................................................................................ 3
INITIAL SETUP..................................................................................................................... 5
Setting the Calendar......................................................................................................................5
Setting the LCD Contrast..............................................................................................................5
Selecting the Ringing Volume....................................................................................................... 5
Selecting the Ringing Tone........................................................................................................... 5
Selecting the Dialing Mode............................................................................................................ 6
Setting the Flash Time ..................................................................................................................6
Setting the PBX DIAL Code .......................................................................................................... 6
BASIC OPERATION............................................................................................................. 7
Making a Call using the Handset .................................................................................................. 7
Receiving a Call using the Handset.............................................................................................. 7
FEATURES........................................................................................................................... 8
FLASH Key....................................................................................................................................8
PAUSE Key...................................................................................................................................8
Last Number Redial.......................................................................................................................8
Memory Redial..............................................................................................................................8
Microphone Mute........................................................................................................................... 9
Message Waiting Lamp.................................................................................................................9
Temporarily Switching Pulse to Tone Dialing................................................................................ 9
Caller ID (CID)............................................................................................................................. 10
TROUBLESHOOTING.........................................................................................................11
Troubleshooting Guide................................................................................................................11
Care and Maintenance................................................................................................................11
SPECIFICATIONS...............................................................................................................12
QUICK REFERENCE...........................................................................................................13
Feature Access Code..................................................................................................................13
Stored Data in the Telephone ..................................................................................................... 13
Operations...................................................................................................................................14

FACE LAYOUT, KEY AND PARTS
1
FACE LAYOUT, KEY AND PARTS
The following figures show the locations of key and parts of telephone.

FACE LAYOUT, KEY AND PARTS
2
No.
Name
Function
(1)
Call Indicator/
Message Waiting Lamp Flashes to indicate an incoming call arrival. Also, indicate when
messages have been received and notified by PBX system control.
(2)
LCD Display
Shows calendar and various information.
(3)
Search Key
Select IN /OUT history and scroll the call record.
(4) Delete Key
Delete last digit of telephone number displayed on LCD or delete the
call history record.
(5)
IN USE LED
Used to indicate the telephone is in use.
(6)
Dial Keys
Dial keys on telephone keypad, including * and #.
(7)
PBX DIAL/SET TIME Key
Used to enter clock setting mode and for Dialing behind a PBX.
(8) FLASH/PAUSE Key
FLASH: Used to disconnect the line and retrieve it, or to access special
network functions.
PAUSE: Used to provide the pause digit required by many PBX
systems.
(9)
REDIAL Key
Used for redialing the last number you dialed.
(10)
MUTE Key
Temporally switches off the handset.
(11)
VOLUME Key
Adjust the volume of the LCD contrast. Scroll the call record.
(12)
Handset Volume Control
Adjusts the volume of the handset.
(13)
Line Socket
Used to connect with your local telephone network.
(14)
Ringing Volume Switch
Sets the volume of the ringer.
(15)
Handset Socket
Used to connect handset with telephone.
(16)
Dialing Mode Switch
Sets the dialing mode of the telephone (DTMF or DP).
The following figure shows the information displayed on LCD.

INSTALLATION
3
INSTALLATION
Connecting the Telephone Network
Connect the telephone to the telephone network with following steps.
1. Connect the one end of the line cord to the LINE socket on the rear of telephone and the
other end to your telephone network outlet.
2. Lay the handset cord in the groove on the bottom of the telephone.
IMPORTANT
Do not connect with the public telephone network directly. This telephone is manufactured for
connection to the line provided by the KTS/PBX systems.
Do not connect other analog devices such as FAX/telephone on the same line. Since this telephone is a
Caller ID terminal, parallel connection on the same line is not guaranteed.
If the other analog terminal is connected to the same line with this telephone, this telephone does not
operate properly.
The Caller ID receiver of KTS/PBX systems shall be set to FSK mode. This telephone is not supported
Caller ID with DTMF signaling.
Wall Mounting
This telephone can be mounted on a wall with two screws. The screws shall be supplied by
customer.
1. Mark off the correct positions for the screws, 83.5mm apart vertically before drilling the
wall.
2. Install the screws into the wall.
3. Mount the telephone on the wall so that the screw heads insert into the slots on the
underside of the telephone.

INSTALLATION
4
4. Remove the hanger hook from the telephone, and then reverse it and reinsert to the
telephone.
5. If you wish to temporarily place the handset down during a conversation, hook the handset
onto the top of the hanger hook as shown below.
Pull up
Reverse and Pull down

INITIAL SETUP
5
INITIAL SETUP
Setting the Calendar
This telephone is equipped with a calendar showing Year/Month/Day/Hour/Minute. The calendar is
shown on the display while the phone is idle. Set the calendar with the following steps.
NOTE
When the telephone receives an incoming call the time and date will automatically be overwritten with the
system time and date.
1. Ensure the phone is idle.
2. Hold the SET TIME key for approx. 2 seconds until the year appears flashing on the
display.
3. Advance up or down to the correct year by pressing the △or ▽keys.
4. Press the SET TIME key to set the year and advance to the Month.
5. Repeat this process to set the Month, Date, Hour and Minute.
Setting the LCD Contrast
There are 6 display contrast settings.
1. Ensure the phone is idle.
2. Press VOLUME repeatedly to set the desired LCD contrast.
Selecting the Ringing Volume
Select from three ringing volume levels using the Ringing Volume Switch on the rear of telephone, L
(low), M (mid), or H (high).
Selecting the Ringing Tone
There are 3 ringing tones to choose from – low, mid and high pitch.
1. Ensure the phone is idle.
2. Dial * 1 *.
3. Dial 1 (low), 2 (mid) or 3 (high). (Default setting is 1.)
4. Dial #.
After the setting is completed, the ringing tone (e.g.tone1) is shown on the LCD for 2 seconds.
NOTE
If the KTS/PBX system is set the ringing signal interval less than 0.5 second, the ringer sound may not be
followed by the setting timing.

INITIAL SETUP
6
Selecting the Dialing Mode
Set the Dialing Mode Switch on the rear of the telephone to either DP (Pulse) or MF (Tone) to select
the signaling type. The signaling type depends on the requirements of the PBX to which the
telephone is connected.
Setting the Flash Time
The correct hook flash timing depends on the requirements of the PBX to which the telephone is
connected.
1. Ensure the phone is idle.
2. Dial *41 *.
3. Dial 00 to 06 to select from the following hook flash timings.
00: 95ms
01: 100ms
02: 120ms
03: 180ms
04: 270ms
05: 300ms
06: 600ms (Default)
4. Dial #.
5. After the setting is completed, the setting time (e.g.300) is shown on the LCD for 15
seconds.
Setting the PBX DIAL Code
When this telephone is installed as a PBX extension, a trunk access code is often required to
precede external numbers that are dialed. The PBX DIAL key can automatically insert the PBX
trunk access code at the front of a dialed number, when dialing from the IN List (Caller ID), or
Preview Dialing.
The PBX trunk access code may differ from site to site, according to how the PBX is configured. Set
the PBX DIAL code with following steps.
To set or change the PBX DIAL code:
1. Ensure the phone is idle.
2. Dial * 0 *.
3. Dial the PBX trunk access code 0 to 9. (Default=not assigned.)
4. Dial #.
To clear the PBX DIAL code:
1. Ensure the phone is idle.
2. Dial * 0 * #.