Introduction
This user manual provides comprehensive instructions for the AT&T GL2101-2 DECT 6.0 2-Handset Cordless Home Phone System. This system is designed to offer reliable communication with advanced features for your home or office.
The GL2101-2 system includes a base unit and two cordless handsets, providing flexibility and convenience for multiple locations within your premises.

Figure 1: AT&T GL2101-2 Cordless Phone System
What's in the Box
- Base unit
- 2 cordless handsets
- 1 charger
- 2 adaptors
- 2 battery packs
- Telephone line cord
- Quick start guide
Setup
1. Battery Installation and Charging
Before initial use, install the included battery packs into each cordless handset. Ensure correct polarity. Place the handsets on the base unit and charger to allow the batteries to fully charge for at least 16 hours. A full charge is essential for optimal battery performance and talk time.

Figure 2: Handsets on Base Unit and Charger
2. Base Unit Connection
Connect the telephone line cord to the base unit and then to your telephone wall jack. Plug the power adapter into the base unit and an electrical outlet. Ensure all connections are secure.
3. Initial Setup
Once the handsets are charged, you may need to set the date and time. Refer to the Quick Start Guide for specific instructions on initial setup procedures.
Operating Instructions
DECT 6.0 Technology
The phone system utilizes DECT 6.0 technology, providing clear, interference-free sound and an extended operating range of up to 1000 feet outdoors. This ensures reliable communication throughout your home or office environment.
Video 1: Product Overview demonstrating key features and DECT 6.0 technology.
Call Block Feature
Effectively manage unwanted calls by utilizing the Call Block feature. You can save up to 20 names and numbers in the call block directory to prevent them from ringing your phone. A Caller ID subscription from your service provider is required for this feature to function.

Figure 3: Call Block Directory Interface
Full-Duplex Handset Speakerphone
Engage in natural, hands-free conversations with the built-in full-duplex speakerphone. This feature allows both parties to speak and be heard simultaneously, enhancing the clarity and flow of your calls.

Figure 4: Full-Duplex Speakerphone in Use
Caller ID and Call Waiting
The 2-inch white backlit display clearly shows Caller ID entries and call history. This allows you to identify incoming callers even in low-light conditions. The system also supports Call Waiting, provided you have subscribed to the service through your telephone provider.

Figure 5: Caller ID Display

Figure 6: 2-inch White Backlit Display
Lighted Keypad with Big Buttons
The handset features a lighted keypad with large, easy-to-read buttons, facilitating dialing and navigation even in dimly lit environments.

Figure 7: Lighted Keypad
Phonebook Directory
Store frequently called numbers in the phonebook directory, which can hold up to 50 names and numbers for quick access.

Figure 8: Phonebook Directory
Handset to Handset Intercom
Communicate between handsets using the intercom feature, ideal for internal household or office communication without using the landline.

Figure 9: Handset Intercom Functionality
Quiet Mode
Activate Quiet Mode to silence the ringer on all handsets and the base unit for a specified period, providing uninterrupted peace.

Figure 10: Quiet Mode Activation
Other Features
- Last 10 number redial
- Mute function
- Any key answer
- Voicemail waiting indication (network dependent)
- Volume control
- Multilingual prompts (English/Spanish/French)
Maintenance
Battery Care
The rechargeable handset battery provides up to 10 hours of talk time or 5 days of standby time on a single charge. The ECO mode optimizes power consumption for longer battery life. To maintain battery health, always return the handset to the base unit or charger when not in use. Avoid exposing batteries to extreme temperatures.

Figure 11: Battery Life Indicators
Cleaning
Clean the phone's surfaces with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure the phone is disconnected from power before cleaning.
Troubleshooting
| Problem | Solution |
|---|---|
| No dial tone | Ensure the telephone line cord is securely connected to the base unit and the wall jack. Check if the power adapter is properly plugged in. |
| Handset displays "Out of range" | Move closer to the base unit. Ensure the base unit is not placed near large metal objects or other electronic devices that may cause interference. |
| Poor sound quality | Check for interference from other electronic devices. Ensure the handset battery is fully charged. |
| Cannot make or receive calls | Verify that your telephone service is active. Check all connections. If the issue persists, contact your telephone service provider. |
| Call Block not working | Ensure you have a Caller ID subscription from your telephone service provider. Verify that the numbers are correctly entered into the call block directory. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | GL2101-2 |
| Product Dimensions (Base) | 4.25 x 3.23 x 7.24 inches (L x W x H) |
| Product Dimensions (Handset) | 7.28 x 2.99 x 2.83 inches (H x W x L) |
| Item Weight | 1.37 pounds (total package) |
| Batteries | 2 Product Specific batteries required (included) |
| Technology | DECT 6.0 |
| Color | Graphite |
| Material | Plastic |
| Power Source | Corded Electric |
| Dialer Type | Single Keypad |
| Answering System | No |
| Manufacturer | VTech |

Figure 12: Handset Dimensions
Warranty and Support
For warranty information and technical support, please refer to the warranty card included in your product packaging or visit the official AT&T support website. Keep your purchase receipt as proof of purchase for warranty claims.
For additional assistance, you may contact AT&T customer service directly. Contact details are typically available on the manufacturer's website or in the included documentation.
Online resources and FAQs may also be available to help resolve common issues.





