Nec DTH-1-1 owners Manual

USER GUIDE

LOCATION OF CONTROLS

Line Interface
One-Touch
Memory Key

DTH-1-1 (BK) TEL

Bottom View

Handset

Hanger
Hook

Message Waiting
Lamp

Dial Mode Switch

Handset Interface

MUTE Key
REDIAL Key

FLASH Key

IN USE Indicator

VOLUME Control Key

Top View

Nothing contained in this manual shall be deemed to be, and this manual does not constitute, a warranty of, or representation
with respect to, any of the equipment covered. This manual is subject to change without notice and NEC Infrontia
has no obligation to provide any updates or corrections to this manual. Further, NEC Infrontia Corporation
also reserves the right, without prior notice, to make changes in equipment design or components as it deems appropriate. No
representation is made that this manual is complete or accurate in all respects and NEC Infrontia
be liable for any errors or omission. In no event shall NEC Infrontia
consequential damages in connection with the use of this manual. This document contains proprietary information that is
protected by copyright. All rights are reserved. No part of this document may be photocopied or reproduced without prior written
consent of NEC Infrontia

Corporation.

2004 by NEC Infrontia Corporation All Rights Reserved.

Corporation be liable for any incidental or

Corporation

Corporation shall not

USER GUIDE

DTH-1-1 (BK) TEL

IMPORTANT SAFETY INSTRUCTIONS

When using your telephone equipment, basic safety precautions
should always be followed 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, 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 or electric shock. Never spill liquid of any kind on the
product.

7. To reduce the risk of electric shock, do not disassemble this product.
Take it to a qualified serviceman when 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.

Please keep this unit away from equipment that uses radio waves or
microwaves such as a portable radio or a microwave oven. This type of
equipment may cause improper operation.

USER GUIDE

DTH-1-1 (BK) TEL

CONNECTION TO THE TELEPHONE LINE

Connect the line cord to the bottom of the DTH-1-1 (BK) TEL and to PBX/KTS
Phone Jack.

Note : Use the DTH-1-1(BK)TEL only behind a PBX or a KTS.

SPECIFICATIONS

DP dial
Make ratio:39 1%
Pulse speed :10 1pps

DTMF dial
Level (High group):0 -5.5dBm
(Low group):0 -7.5dBm
Signal duration:80 10ms
Minimum pause:80 10ms

Flash
Flash time:630 20ms

DIAL MODE

Either "T (Tone/DTMF)" or "P (Pulse/DP)" mode is selected by the Dial Mode
switch which is located on the bottom of the DTH-1-1 (BK) TEL.

Note : Confirm Telephone Network method or PBX/KTS method.

T

P

TEMPORARY SWITCH OVER OF THE DIALING MODE

After a connection has been set up to use PULSE dialing, switch over to
TONE dialing can be made by pressing the * button. Certain services offered
by some Public Telephone Exchanges or PBXs, e.g. control of a telephone
answering system, simple data traffic, etc, can then be utilized by dialing
additional digits.The telephone is automatically reset to PULSE dialing when
the handset is cradled.