Panasonic D-Tech 6.0 Manual KX-TG78XX Phones

Operating Instructions

Panasonic D-Tech 6.0 Manual KX-TG78XX Phones

Model composition
Model composition

*1 Single handset models: Intercom calls can be made between handsets by purchasing and registering one or more optional handsets (page 5).
*2 The following features are provided for these models:
– USB charging (USB jack is on the left side of the base unit)
– Text message alert feature

Accessory information
Accessory information



1 Replacement batteries may have a different capacity from that of the supplied batteries.

*2 By installing this unit, you can extend the range of your phone system to include areas where reception was previously not available. This product can be purchased online. Please visit our Web site:

*3 By registering the key detector (4 max.) to a Panasonic Digital Cordless Phone and attaching it to an easy-to-lose item in advance, you can locate and find the mislaid item to which the key detector is attached. Please visit our Web site:

Expanding your phone system

Expanding your phone system

*1 Your cellular phone and headset must be Bluetooth wireless technology compatible. For more details and the list of compatible cellular phones, please visit our Web site:

R The Bluetooth® word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by Panasonic Corporation is under license. All other trademarks identified herein are the property of their respective owners.

For your safety
To prevent severe injury and loss of life/
property, read this section carefully before
using the product to ensure proper and safe
operation of your product.

Power connection

R Use only the power source marked on the product.
R Do not overload power outlets and extension cords. This can result in the risk
of fire or electric shock.
R Completely insert the AC adaptor/power
plug into the power outlet. Failure to do so may cause electric shock and/or excessive heat resulting in a fire.
R Regularly remove any dust, etc. from the AC adaptor/power plug by pulling it from
the power outlet, then wiping with a dry cloth. Accumulated dust may cause an
insulation defect from moisture, etc.
resulting in a fire.
R Unplug the product from power outlets if it emits smoke, an abnormal smell, or makes an unusual noise. These conditions can cause fire or electric shock. Confirm that smoke has stopped emitting and contact the Panasonic Call Center at
1-800-211-PANA (1-800-211-7262).
R Unplug from power outlets and never touch the inside of the product if its casing has been broken open.
R Never touch the plug with wet hands.
Danger of electric shock exists.

Installation R To prevent the risk of fire or electrical shock, do not expose the product to rain or any type of moisture.

R Do not place or use this product near automatically controlled devices such as automatic doors and fire alarms. Radio waves emitted from this product may cause such devices to malfunction resulting in an

R Do not allow the AC adaptor or telephone line cord to be excessively pulled, bent or placed under heavy objects.

Operating safeguards

R Unplug the product from power outlets before cleaning. Do not use liquid or
aerosol cleaners.
R Do not disassemble the product.
R Do not spill liquids (detergents, cleansers, etc.) onto the telephone line cord plug, or allow it to become wet at all. This may cause a fire. If the telephone line cord plug becomes wet, immediately pull it from the telephone wall jack, and do not use.

R Consult the manufacturer of any personal medical devices, such as pacemakers or hearing aids, to determine if they are adequately shielded from external RF
(radio frequency) energy. (The product operates in the frequency range of
1.92 GHz to 1.93 GHz, and the RF transmission power is 115 mW (max.).)

R Do not use the product in health care facilities if any regulations posted in the
area instruct you not to do so. Hospitals or health care facilities may be using
equipment that could be sensitive to external RF energy.
CAUTION Installation and location
R Never install telephone wiring during an electrical storm.
R Never install telephone line jacks in wet locations unless the jack is specifically designed for wet locations.
R Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface.
R Use caution when installing or modifying
telephone lines.
R The AC adaptor is used as the main disconnect device. Ensure that the AC
outlet is installed near the product and is easily accessible.
R This product is unable to make calls when:

– the handset batteries need recharging or have failed.
– there is a power failure.

R We recommend using the batteries noted on page 4. USE ONLY rechargeable
Ni-MH batteries AAA (R03) size.
R Do not mix old and new batteries.
R Do not open or mutilate the batteries.
Released electrolyte from the batteries is corrosive and may cause burns or injury to the eyes or skin. The electrolyte is toxic and may be harmful if swallowed.
R Exercise care when handling the batteries.

Do not allow conductive materials such as rings, bracelets, or keys to touch the
batteries, otherwise a short circuit may cause the batteries and/or the conductive material to overheat and cause burns.
R Charge the batteries provided with or identified for use with this product only, in accordance with the instructions and limitations specified in this manual.
R Only use a compatible base unit (or charger) to charge the batteries. Do not
tamper with the base unit (or charger). Failure to follow these instructions may
cause the batteries to swell or explode.

A nickel metal hydride battery that is recyclable powers the product you have
Please call 1-800-8-BATTERY
(1-800-822-8837) for information on how to recycle this battery.

Important safety instructions
When using your product, basic safety precautions should always be followed to
reduce the risk of fire, electric shock, and injury to persons, including the following:
1. Do not use this product near water for example, near a bathtub, washbowl,
kitchen sink, or laundry tub, in a wet basement or near a swimming pool.
2. Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of electric shock from lightning.
3. Do not use the telephone to report a gas leak in the vicinity of the leak.
4. Use only the power cord and batteries indicated in this manual. Do not dispose of batteries in a fire. They may explode. Check with local codes for possible special disposal instructions.


For best performance
Base unit location/avoiding noise The base unit and other compatible Panasonic
units use radio waves to communicate with each other.
R For maximum coverage and noise-free communications, place your base unit:
– at a convenient, high, and central location with no obstructions between
the handset and base unit in an indoor environment.
– away from electronic appliances such as TVs, radios, personal computers,
wireless devices, or other phones.
– facing away from radio frequency transmitters, such as external antennas
of mobile phone cell stations. (Avoid putting the base unit on a bay window or
near a window.)
R Coverage and voice quality depends on the local environmental conditions.

R If the reception for a base unit location is
not satisfactory, move the base unit to
another location for better reception.

R Keep the product away from electrical noise
generating devices, such as fluorescent
lamps and motors.
R The product should be kept free from
excessive smoke, dust, high temperature,
and vibration.
R The product should not be exposed to
direct sunlight.
R Do not place heavy objects on top of the
R When you leave the product unused for a
long period of time, unplug the product from
the power outlet.
R The product should be kept away from heat
sources such as heaters, kitchen stoves,
etc. It should not be placed in rooms where
the temperature is less than 0 °C (32 °F) or
greater than 40 °C (104 °F). Damp
basements should also be avoided.
R The maximum calling distance may be
shortened when the product is used in the
following places: Near obstacles such as
hills, tunnels, underground, near metal
objects such as wire fences, etc.
R Operating the product near electrical
appliances may cause interference. Move
away from the electrical appliances.
Routine care
R Wipe the outer surface of the product
with a soft moist cloth.
R Do not use benzine, thinner, or any
abrasive powder.

Other information
CAUTION: Risk of explosion if battery is
replaced by an incorrect type. Dispose of used
batteries according to the instructions.

Notice for product disposal, transfer, or return
R This product can store your private/
confidential information. To protect your
privacy/confidentiality, we recommend that
you erase information such as phonebook
or caller list entries from the memory before
you dispose of, transfer, or return the

ENERGY STAR (for KX-TG7841 series)
As an ENERGY STAR® Partner, Panasonic
has determined that this product meets the
ENERGY STAR guidelines for energy
efficiency. ENERGY STAR is a U.S.
registered mark.

1. Standard: DECT 6.0 (Digital Enhanced Cordless Telecommunications 6.0)
Bluetooth wireless technology 2.0
2. Frequency range: 1.92 GHz to 1.93 GHz (DECT), 2.402 GHz to 2.48 GHz (Bluetooth)
3. RF transmission power: 115 mW (max.)
4. Power source: 120 V AC, 60 Hz
5. Power consumption: Base unit:*1 Standby: Approx. 1.2 W Maximum: Approx. 4.5 W
Base unit:*2 Standby: Approx. 1.2 W Maximum: Approx. 8.5 W Charger: Standby: Approx. 0.1 W Maximum: Approx. 1.8 W
6. USB Charger:*2 Output voltage: DC 5 V Output current: 500 mA
7. Operating conditions: 0 °C – 40 °C (32 °F – 104 °F), 20 % – 80 % relative air humidity (dry) *1 KX-TG7841 series: page 3 *2 KX-TG7871 series: page 3
8. Design and specifications are subject to change without notice.
9. The illustrations in these instructions may vary slightly from the actual product.

Setting up Connections

1. If you do not connect the telephone line cord and use only cellular lines, set the cellular line only mode to use this unit more conveniently (page 19). n Base unit (KX-TG7841 series: page 3)

2. Use only the supplied Panasonic AC adaptor PNLV226.

Setting Up

*DSL/ADSL filter (not supplied) is required if you have DSL/ADSL service.

1. Base unit (KX-TG7871 series: page 3)
2. Use only the supplied Panasonic AC adaptor PNLV234.
3. The hook of the base unit is not designed to hold the AC adaptor cord for the desk stand or wall mounting use (page 67).
Base unit

Battery installation

Battery charging

Note when setting up

Note for battery charging

Getting Started

Getting Started

Intelligent eco mode



1. Speaker
2. M N (TALK)
3. Headset jack
4. Dial keypad (*: TONE)
5. MZN (SP-PHONE: Speakerphone)
6. Microphone
7. Receiver
8. Display
12. Charge contacts

Control type

Control type

Base unit

Base unit

Base Unit Mark

Charging the cellular phone by USB
Available for:
KX-TG7871 series (page 3)

By connecting a USB cable (not supplied) to the cellular phone and the base unit, you can charge a cellular phone. However, the cellular phone cannot exchange data with the base unit through a USB cable.

Charging the cellular phone




Initial settings
n Direct command code: Programmable settings can be accessed by pressing MMENUN, #, and then the corresponding code on the dial keypad (page 36).
Example: Press MMENUN#101.
n Symbol meaning:
Example: MbN: “Off”
Press MCN or MDN to select the words in quotations.

Date and time
R When you install the batteries for the first time, the handset may prompt you to set date and time. First press MSELECTN, then proceed to step 2.

1 MMENUN#101
2 Enter the current month, date, and year
by selecting 2 digits for each.
Example: July 15, 2013
07 15 13
4 Enter the current hour and minute
(12-hour clock format) by selecting 2
digits for each.
Example: 9:30
09 30
5 *: Select “AM” or “PM”.

R When English is selected as the display language, 12-hour clock format is used.
When Spanish is selected, 24-hour clock format is used.
R The date and time may be incorrect after a power failure. In this case, set the date and time again.

Display language
You can select either “English” or “Español” as the display language. The
default setting is “English”.

Handset / Base unit
1 MMENUN#110
2 MbN: Select the desired setting. a MSAVEN
3 Proceed with the operation for your unit.

Handset: MOFFN
Base unit: MEXITN
Voice guidance language You can select either “English” or “Español” as the voice guidance language of the answering system. The defau lt setting is

1 MMENUN#112
2 MbN: Select the desired setting.

Dialing mode
If you cannot make calls, change this setting
according to your telephone line service. The
default setting is “Tone”.
“Tone”: For tone dial service.
“Pulse”: For rotary/pulse dial service.

1 MMENUN#120
2 MbN: Select the desired setting.

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