Installation Guide
Package Contents:
- Base unit (KX-TG7871B)
- Handset (KX-TGA787B)
- Rechargeable battery pack
- AC adaptor
- Telephone line cord
- Belt clip
- User manual
Step-by-Step Installation
- Battery Installation: Insert the rechargeable battery into the handset, ensuring correct polarity (+/-).
- Charging the Handset: Place the handset on the base unit and charge for at least 7 hours before first use.
- Connect Base Unit: Connect the telephone line cord from the base unit to your telephone wall jack.
- Power Connection: Connect the AC adaptor to the base unit and plug into a standard 120V AC outlet.
- Location Selection: Place the base unit on a flat surface away from electronic interference sources.
- Handset Registration: The handset will automatically register with the base unit when placed in the charger.
- Initial Setup: Set date, time, and other preferences using the handset menu system.
Specifications
| Model Number | KX-TG7871 |
| Type | DECT 6.0 Cordless Phone |
| Color | Black / Silver |
| Frequency | 1.9 GHz DECT 6.0 |
| Range | Up to 1000 feet outdoors |
| Display | Backlit LCD with White Backlight |
| Battery Type | Ni-MH rechargeable battery |
| Talk Time | Up to 13 hours |
| Standby Time | Up to 10 days |
| Power Requirements | AC 120V, 60Hz, 5V DC |
| Dimensions (Base) | 6.3 x 5.9 x 2.4 inches |
| Weight (Handset) | 0.3 lbs |
| Phonebook Capacity | 100 entries |
Warranty Information
- Limited Warranty: 1 year parts and labor
- Battery Warranty: 6 months on rechargeable battery
- Additional Coverage: Optional extended warranty available
For warranty service, contact Panasonic Customer Service at 1-800-211-7262 or visit Panasonic.com
Key Features
DECT 6.0 Technology
Advanced digital technology provides clear sound quality, enhanced security, and interference-free communication on the 1.9 GHz frequency band.
Digital Answering System
Built-in digital answering machine with up to 18 minutes of recording time, remote message playback, and voice guidance.
Caller ID with Call Waiting
Displays caller information on the LCD screen and stores up to 50 calls in memory. Compatible with Call Waiting Caller ID services.
Backlit Keypad & Display
Easy-to-read white backlit LCD display and keypad for comfortable viewing in any lighting condition.
Intercom Function
Allows communication between the base unit and handset, or between multiple handsets in multi-handset systems.
Eco Mode
Reduces power consumption by adjusting transmission power based on proximity to the base unit, extending battery life.
Advanced Calling Features
3-Way Conferencing
Allows three-way conversations between two outside callers and the handset user
Speed Dial
Store up to 9 numbers for quick one-touch dialing from the handset
Mute Function
Temporarily mute your microphone during calls for private conversations
Last Number Redial
Automatically redials the last number called with a single button press
Call Block
Block unwanted calls from specific numbers stored in the phone's memory
Voice Mail Indicator
Visual indicator alerts you when you have voice mail messages waiting
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No dial tone | Phone line disconnected, AC adaptor not plugged in | Check telephone line connections, ensure AC adaptor is properly connected |
| Handset not charging | Battery not installed properly, dirty charging contacts | Reinstall battery, clean charging contacts on handset and base |
| Poor sound quality | Low battery, interference, distance from base | Charge handset, move closer to base, change location to avoid interference |
| No display on handset | Battery completely discharged, display turned off | Charge handset for at least 30 minutes, check display settings |
| Can't make outgoing calls | Phone line issue, call restriction enabled | Check phone line with another phone, disable call restriction if enabled |
| Answering system not working | System turned off, memory full | Turn on answering system, delete old messages to free memory |
Common Error Messages
- NO LINE: Telephone line not detected - Check line connection
- LOW BATTERY: Handset battery needs charging - Place in charger
- OUT OF RANGE: Handset too far from base - Move closer to base unit
- MEMORY FULL: Phonebook or call log full - Delete old entries
- NO ANS ONS: Answering system not turned on - Enable answering system
- REGISTERING: Handset registering with base - Wait for process to complete
Manual Downloads
Current Model Manuals
KX-TG7871
DECT 6.0 Cordless Phone with Answering System
KX-TG7872
2-Handset DECT 6.0 Phone System
KX-TG7873
3-Handset DECT 6.0 Phone System
KX-TG7875
5-Handset DECT 6.0 Phone System
Popular Previous Models
KX-TG7611
DECT 6.0 Cordless Phone
KX-TG6511
Basic DECT 6.0 Phone
KX-TG6411
Compact DECT 6.0 Phone
KX-TG1711S
Entry Level DECT Phone