NEC DTH-4R-1 User manual

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User’s Guide
Dterm Cordless Lite II
®
(DTH-4R-1)

1
Handset Controls and Functions
1 Headset Jack 9. Conference (CONF) Key
2. LCD Message Display 10. Transfer (TRANSFER)Key
3. Hold (HOLD) Key 11. Channel (CH) Key
4. Talk (TALK) Key 12. Redial (REDIAL)or
Desk/Cordless Softkey
Switch Key
5. Numeric Keypad 13. F3
6. F2 14. F4
7. F1 15. Ringer/Volume (Ring/Vol)
Key
8. Microphone 16. Mute (MUTE) Key

2
17. Line Out 21. Power
18. Line In 22. Desk LED
19. Cordless 23. Desk
20. Cordless LED
20
19
21 22 23
1817

3
USING YOUR PHONE
Before using your telephone you must ensure that:
 Each base unit is placed at least five feet apart.
 The antenna is raised to the vertical position.
Making a Call
1. Lift the handset and/or press TALK.
 ‘AQUIRING LINK’ blinks in the display while trying to connect to the base unit. (This
message might not be shown if connection is established quickly.)
,
 The ‘Talk’ icon appears in the display and line key lights when connected.
2. Enter the number to be called when dial tone is heard.
 The number dialed will appear on the display.
3. To disconnect, press TALK and replace the handset to the charging unit.
, If there is no connection to the base unit, an error tone is heard, ‘NO SERVICE’ is temporarily displayed on
the LCD and the telephone enters standby mode.
Receiving a Call
1. While the telephone is ringing, lift the handset and/or press any key.
 ‘AQUIRING LINK’ blinks in display while trying to connect to base unit. (This message
might not be shown if connection is established quickly.)
,
2. If the F1-F4 key is pressed, the handset tries to establish connection with the base unit.
 ‘AQUIRING LINK’ is not shown in the display.
 ‘TALK’ icon appears in the display, the line key lights when connected and the calling
party’s number may appear in the display (if your system is equipped with Caller ID).
3. To disconnect, press TALK and replace the handset to the charging unit.
, If there is no connection to the base unit, an error tone is heard, ‘NO SERVICE’ is temporarily displayed on
the LCD and telephone enters standby mode.
Before plugging the telephone line into your new telephone, the rechargeable nickel
metal hydrite (NiMH) battery pack must be fully charged. Charge the battery for
approximately five to eight hours without interruption.

4
Programming Mode
1. Press and hold , and #at the same time, then press TALK.
 ‘F1=LK01’ shows in the display and the F1 LED flashes red.
2. Press On/Off MUTE to select the function/line key to program.
 (LK01 - LK04 and Off-hook Ring)
3. Press Ring/Vol key repeatedly to scroll options for each line key.
 (LK01 - LK16, LNR/SPD, Recall, FNC, or ANS)
4. Press TALK to exit programming mode.
 When initially installed, the four function keys default to line keys 1-4 respectively and
off-hook ringing defaults to ON.
Redialing
Press TALK then REDIAL to dial the last number in memory.
 The station dial limit is 32 digits and redial stores up to 32 digits in memory.
Holding
1. During a call, press HOLD on the handset.
 The (F1 ~F4) LED in use flashes.
2. To return to the held call, press the associated line key (F1 ~F4).
Transferring a Call
1. During a call, press TRANSFER.
2. Dial the number of the transfer destination.
3. Wait for the party to answer (optional).
4. Press TALK to hang up and complete the transfer.

5
Muting
1. Press On/ Off MUTE during conversation.
 The ‘TALK’ icon blinks and the voice through the microphone is muted.
2. Press On/ Off MUTE again to cancel the muted condition. (Finishing the conversation also
cancels the mute condition.)
 The ‘TALK’ icon stops blinking.
Conferencing
This feature allows the user to set up a 3-party conference.
1. During a conversation, press CONF.
2. Dial the number for the second conference party.
3. Press CONF again to establish a 3-party conference.
Receiving Volume
1. During a conversation, press Ring/Vol to change the ear speaker volume setting.
 The telephone has four receiver volume levels: Low, Medium, High, Maximum.
2. Continue to press Ring/Vol until the desired volume is selected.
 When you hang up, the telephone retains the last selected volume.
Ring Tone/Volume
In standby mode, press Ring/Vol to change the ring tone and volume.
In standby mode, press Ring/Vol.
 The selected tone and volume rings for about two seconds. The display shows ring
tone: Type A – High/Low, Type B – High/Low, Type C – High/Low, OFF – Vibrate.
If Ring/Vol is pressed while the ringer tone is sounded, the handset stops ringing and goes
to the next tone setting.
 The LCD display disappears after the selected tone/volume rings for about two
seconds.

6
Ringer ON/OFF
When the Dterm Cordless Lite II ringer is turned off, the handset does not ring or vibrate and the
ringer ‘OFF’ icon appears in the display. When the ring ‘OFF’ icon appears and the terminal is idle
for five minutes, the ring ‘OFF’ icon turns off to save battery life. When operation resumes, the ring
‘OFF’ icon reappears.
To turn the ring On and Off, press and hold the On/Off MUTE key for five seconds. This must be
done in an idle state.
Vibrator Mode
If the ring tone selection is ‘Ring OFF’ when the handset is not on the charger, the handset LCD
displays and an incoming call number when there is an incoming call (must have Caller ID).
If the handset is on the charger and ring tone selection is ‘Ring OFF’, the handset will display the
incoming caller name as a number (must have Caller ID).
Ring Tone/Volume Setting Table
The following table shows how the handset rings in each setting.
Desk/Cordless Switching
When the Dterm Cordless Lite II is associated with a multiline telephone, the base unit can be used
for switching between Cordless and Desk modes.
Press Cordless to select Dterm Cordless Lite II mode.
OR
Press Desk to select multiline telephone mode.
 The REDIAL key can be used to switch from Desk to Cordless mode only. At default, the
REDIAL key can only perform the redial function.
Ringer Settings On Charger Off Charger
High Tone On Selected Ring High Selected Ring High
Low Tone On Selected Ring Low Selected Ring Low
High/Low Tone/Ring Off Nothing Nothing

7
Programming Desk/Cordless Softkey Switching (Redial key)
This feature switches from Desk to Cordless mode only.
1. Make sure the base unit is in Desk mode.
2. Remove the handset battery.
3. Press and hold the
, and #keys on the handset at the same time.
4. Install the battery while pressing and holding these keys.
5. After the handset beeps one time, release the keys.
 At this point the handset is in the setup mode.
6. Press HOLD to display the current mode. Digital (Redial)
7. Press F2 and then HOLD.
 The handset displays Digital (F8). This changes the program of the REDIAL key to the
Desk/Cordless Softkey Switching mode. Redial functionality is no longer available.
8. Press TALK once to restore the handset to standby mode.
9. To test this feature, press REDIAL once.
 The base unit automatically changes from Desk to Cordless. This is a one time
switching operation only.
 If necessary, F1-F4 can be programmed for redial function.
10. The REDIAL key can be restored for redial function only by entering setup mode, pressing
F3 and then HOLD.
 The handset displays Digital (Redial). This means that the REDIAL key has been
restored for redial function only.
11. Press TALK once to restore the handset to standby mode.
Changing Channels
During the conversation if the user presses CH, the ‘TALK’ icon starts blinking. The ‘TALK’ icon
stops blinking when handset completes channel change.
 During channel change, other telephone functions are not available.

8
Traveling Out of Range
If function keys (F1 ~ F4) are pressed and no connection is established within five seconds, the
telephone times out and returns to standby mode.
 When using the TALK key, the handset sounds an error tone and ‘NO SERVICE’ displays in
the LCD.
 While talking, if the handset cannot receive a signal from the base unit in approximately 35
seconds, it emits an error tone and goes to standby mode.
Charging the Battery
1. Remove the handset battery cover.
2. Slide the battery into the handset.
3. Replace the battery cover.
4. Place the handset in the charging unit to charge. The change LED will light.
Low Battery Indicator
The handset has visual and audible indicators to warn of low-battery.
In standby mode, the handset displays the battery ‘LOW’ icon. All LEDs and LCD
messages are cleared and keys are disabled. The battery low alert tone emits every 15
seconds for three minutes.
In talk mode, the handset displays the battery ‘LOW’ icon. All keys and functions are
available. The battery low alert tone emits every three seconds until the conversation ends.
 After the handset has been on the charger for one minute, the battery low condition
cancels, the battery icon turns off and the battery low tone stops.
Before plugging the telephone line into your new telephone, the rechargeable NIMH
battery pack must be fully charged. Charge the battery for approximately five to eight
hours without interruption.
If ‘low’ battery happens during a conversation, you have 20 seconds to switch
the low battery with a charged battery before automatically disconnecting.

9
Cleaning Battery Contacts
To maintain a good charge, it is important to clean all battery contacts on the handset and base
about once a month. Use a dry cloth or, if necessary, use a pencil eraser. Do not use any liquids or
solvents.
Beltclip Installation
1. Insert the beltclip into the holes on each side of the handset.
2. Press down firmly until it clicks into the holes.
3. To remove the beltclip, pull both sides of the beltclip out of the holes.
Headset Installation
Your telephone can be used with an optional headset. To use this feature, simply plug the headset
into the headset jack on the handset. Your telephone is ready for handsfree conversation.
Dterm Cordless Lite II is hearing aid compatible.
OPTIONAL AVAILABLE PARTS
Part Description Stock Number
EXP 9360 Wall Mount for Charger Unit 730633
EXP 9385 Charger 730632
EXP 9302 Beltclip 730634
BT-930 Battery (NiMH, DC 3.6V 750 Mah) 730631
EXP 9660 Wall Mount for Base 730608
EXP 9704 AC Adapter for Base Unit 730618
AD0970 AC Adapter for Charger Unit 730619
M175 NEC Cordless Headset 750637
M145 NEC Cordless Headset 750638

Notes

Notes

Notes

750248-0
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©
2003 NEC America, Inc.
T
he material contained herein is subject to change
w
ithout prior notice at the sole discretion of NEC America,
I
nc.
D
term®is a registered trademark of NEC Corporation.
Document Revision 1
For more information contact:
NEC America, Inc.
6555 N State Highway 161
Irving, TX 75039-2402
www.cng.nec.com