1. Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your Uniden D1680 Cordless Phone with Digital Answering System. The D1680 utilizes DECT 6.0 technology for clear communication and extended range. Please read this manual thoroughly before using your new phone system.
2. Package Contents
Verify that your package contains the following items:
- Cordless Handset
- Base Unit
- AC Adapter for Base Unit
- Rechargeable AAA Batteries (2)
- Telephone Line Cord
- Printed Materials (Quick Start Guide, Warranty Information)
3. Product Overview
The Uniden D1680 system consists of a cordless handset and a base unit, designed for ease of use and reliable performance.

Image 1: Uniden D1680 Cordless Phone and Base Unit. The handset features a backlit display, numeric keypad, and function buttons such as TALK/FLASH, END, MENU/SELECT, ID, MUTE, PAUSE, INTCOM, CLEAR, #SILENT, and *TONE. The base unit includes a message counter, ANS ON/OFF button, FIND HS button, and volume controls.
3.1 Handset Controls
- TALK/FLASH: Initiates or answers a call; used for call waiting.
- END: Ends a call; returns to idle mode.
- MENU/SELECT: Accesses the menu; confirms selections.
- ID: Displays Caller ID information.
- MUTE: Mutes the microphone during a call.
- PAUSE: Inserts a pause during dialing.
- INTCOM: Initiates an intercom call between handsets.
- CLEAR: Deletes characters; cancels an operation.
- #: Used for Silent Mode activation/deactivation.
- *: Used for Tone dialing.
- Volume/Navigation Keys: Adjusts earpiece/speaker volume; navigates menus.
3.2 Base Unit Controls
- ANS ON/OFF: Activates or deactivates the digital answering system.
- FIND HS: Locates misplaced handsets.
- VOLUME +/-: Adjusts the base unit speaker volume.
- Message Counter: Displays the number of new messages.
- Playback Controls: Play/Stop, Skip Forward, Skip Back.
4. Setup
4.1 Battery Installation
- Open the battery compartment cover on the back of the handset.
- Insert the two supplied AAA rechargeable batteries, observing the correct polarity (+ and -).
- Close the battery compartment cover securely.
4.2 Base Unit Connection
- Connect the small end of the AC adapter to the power jack on the back of the base unit.
- Plug the large end of the AC adapter into a standard electrical outlet.
- Connect one end of the telephone line cord to the TEL LINE jack on the base unit.
- Plug the other end of the telephone line cord into a telephone wall jack.
4.3 Initial Charging
Place the handset on the base unit or charger cradle. For optimal battery performance, allow the handset to charge continuously for 12 hours before its first use.
4.4 Date and Time Setting
After the initial charge, the handset will prompt you to set the date and time. Follow the on-screen instructions using the navigation keys and MENU/SELECT button to enter the correct information.
5. Operating Instructions
5.1 Making and Receiving Calls
- To Make a Call: Press TALK/FLASH, then dial the number. Alternatively, dial the number first, then press TALK/FLASH.
- To Receive a Call: When the phone rings, press TALK/FLASH.
- To End a Call: Press END or place the handset back on the base unit/charger.
5.2 Caller ID
The handset display shows the caller's name and number (if available and subscribed to Caller ID service). Press the ID button to review the Caller ID log, which stores up to 50 names and numbers.
5.3 Phonebook
The phonebook allows you to store frequently called numbers. It can hold up to 100 names and numbers. To add, edit, or delete entries, navigate through the menu using MENU/SELECT and the navigation keys.
5.4 Digital Answering System
The integrated digital answering system provides approximately 12.5 minutes of recording time for incoming messages.
- Activation: Press ANS ON/OFF on the base unit.
- Message Playback: Press the Play button on the base unit or access through the handset menu.
- Remote Access: You can retrieve messages remotely by calling your phone number from an external line and entering your security code.
- Voice Prompts: The system provides trilingual voice prompts in English, Spanish, and French.
5.5 Silent Mode
Silent Mode allows you to temporarily silence all handset and base ringers. To activate or deactivate, press and hold the #SILENT button on the handset.
5.6 ECO Mode
ECO Mode is an energy-saving feature that automatically manages power consumption, contributing to longer battery life for the handset.
5.7 Intercom
If you have multiple handsets registered to the same base unit, you can use the intercom feature to communicate between handsets. Press INTCOM and select the desired handset.
5.8 Expandability
The D1680 system is expandable, allowing you to register up to 12 handsets to a single base unit.
6. Maintenance
6.1 Cleaning
Wipe the phone and base unit with a soft, damp cloth. Avoid using harsh cleaning agents or abrasive materials.
6.2 Battery Care
To maintain optimal battery life, always return the handset to the base unit or charger when not in use. Replace batteries when they no longer hold a charge effectively.
7. Troubleshooting
If you experience issues with your Uniden D1680, refer to the following common problems and solutions:
| Problem | Solution |
|---|---|
| No dial tone | Ensure the telephone line cord is securely connected to both the base unit and the wall jack. Check if the AC adapter is properly connected. |
| Static or poor call quality | Move the handset closer to the base unit. Ensure the base unit is not near other electronic devices that may cause interference. |
| Handset not charging | Verify the handset is correctly seated in the base unit or charger. Clean the charging contacts on both the handset and base unit. Ensure the AC adapter is plugged in. |
| Answering system not recording | Ensure the answering system is turned ON (ANS ON/OFF button). Check if the memory is full and delete old messages if necessary. |
8. Specifications
- Technology: DECT 6.0 Digital
- Answering System: Digital, approximately 12.5 minutes record time
- Phonebook Capacity: Up to 100 names and numbers
- Caller ID Log: Up to 50 names and numbers
- Expandability: Up to 12 handsets per base
- Batteries: 2 x AAA rechargeable batteries (included)
- Dimensions (Base Unit): Approximately 3.98 x 6.97 x 6.97 inches (L x W x H)
- Item Weight: Approximately 1.25 pounds
- Power Source: Battery Powered (handset), AC Adapter (base unit)
- Compatible Devices: Standard Landline Telephone Networks
9. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your product or visit the official Uniden website. Keep your purchase receipt as proof of purchase.