Introduction
The AT&T TRIMLINE 210 Corded Home Phone is designed for reliable and easy communication. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your new telephone. Please read this manual thoroughly before using the phone to ensure proper function and safety.

Image: The AT&T TRIMLINE 210 Corded Home Phone, showcasing its classic beige design.
Video: An overview of the AT&T TRIMLINE 210 Corded Home Phone, highlighting its key features and design.
Package Contents
Ensure all items are present in your package:
- Base unit
- Telephone handset
- Coiled handset cord
- Telephone line cord
- User's manual (this document)
Setup
The AT&T TRIMLINE 210 phone is designed for simple setup, requiring no external power adapter as it operates on line power.
Connecting the Phone
- Connect one end of the coiled handset cord to the handset and the other end to the jack on the side of the telephone base.
- Connect one end of the telephone line cord to the jack on the underside of the telephone base.
- Plug the other end of the telephone line cord into a standard telephone wall jack.

Image: Illustration showing the connection of the telephone line cord to the base unit, highlighting the line-power mode.
Wall Mounting (Optional)
The phone can be easily mounted on a wall to save counter space.
- Remove the directory card and plastic cover to reveal the handset tab.
- Reverse the handset tab and place the directory card back. This tab holds the handset securely when wall-mounted.
- Plug the line cord into the jack on the underside of the base.
- Install the telephone base on a wall jack.

Image: The AT&T TRIMLINE 210 phone shown mounted on a wall, demonstrating its space-saving design.

Image: Step-by-step diagrams illustrating the process of wall installation for the telephone.
Operating Instructions
Making and Receiving Calls
- To make a call: Lift the handset, wait for a dial tone, and dial the desired number using the keypad.
- To receive a call: When the phone rings, lift the handset.
- To end a call: Place the handset back on the base.
Keypad Features
The phone features a lighted keypad for easy dialing in low-light conditions.

Image: A close-up view of the telephone's keypad, illuminated for visibility in dark environments.
Speed Dialing
The phone supports 13 speed dial keys (3 one-touch, 10 standard) for frequently called numbers.
- Programming One-Touch Speed Dial (M1, M2, M3):
- Lift the handset.
- Press the PROG/MUTE button.
- Press one of the three one-touch memory buttons (fire, shield, plus icons).
- Enter the telephone number (up to 21 digits).
- Press the PROG/MUTE button again.
- Hang up the handset.
- Programming Standard Speed Dial (0-9):
- Lift the handset.
- Press the PROG/MUTE button.
- Enter a digit (0-9) for the memory location.
- Enter the telephone number (up to 21 digits).
- Press the PROG/MUTE button again.
- Hang up the handset.
- To Dial a Speed Dial Number:
- Lift the handset.
- Press the desired one-touch memory button or MEM button followed by the 0-9 digit.

Image: Detail of the three dedicated one-touch memory buttons for quick dialing.

Image: A hand demonstrating how to use the speed dial feature on the telephone's keypad.
Last Number Redial
To quickly redial the last number called:
- Lift the handset.
- Press the REDIAL button.

Image: A close-up view of the Redial button, used for quickly calling the last dialed number.
Volume Control
Adjust the handset and ringer volumes to your preference.
- Handset Volume: Use the switch on the side of the handset to adjust the listening volume (Normal/Loud).
- Ringer Volume: Use the switch on the base of the keypad to set the ringer volume (Off/Lo/Hi).

Image: Detail of the handset volume control switch, allowing adjustment between normal and loud settings.

Image: A close-up view of the ringer volume control switch, with options for Off, Low, and High.
Mute Function
To temporarily mute your microphone during a call:
- During a call, press the PROG/MUTE button. The other party will not hear you.
- Press the PROG/MUTE button again to unmute.

Image: Detail of the Mute button, which allows for temporary silencing of the microphone during a call.
Maintenance
To ensure the longevity and optimal performance of your AT&T TRIMLINE 210 phone, follow these maintenance guidelines:
- Cleaning: Wipe the phone with a soft, damp cloth. Do not use liquid or aerosol cleaners. Avoid using harsh chemicals or abrasive materials.
- Storage: If storing the phone for an extended period, unplug it from the telephone line jack and store it in a cool, dry place.
- Environmental Conditions: Do not expose the phone to extreme temperatures, direct sunlight, or high humidity. Keep it away from water sources.
- Cord Care: Periodically check the coiled handset cord and telephone line cord for any signs of wear or damage. Replace if necessary.
Troubleshooting
If you experience issues with your phone, try the following troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No dial tone | Telephone line cord is not properly connected. | Ensure the telephone line cord is securely plugged into both the phone base and the wall jack. |
| Cannot make or receive calls | Line power issue or service interruption. | Check if other phones on the same line are working. Contact your telephone service provider if the issue persists. |
| Static or poor sound quality | Interference or faulty cord. | Ensure the phone is not near electrical appliances. Try replacing the coiled handset cord or telephone line cord. |
| Ringer not working | Ringer volume set to OFF. | Adjust the ringer volume switch on the phone base to LO or HI. |
| Speed dial numbers not saving | Incorrect programming steps. | Review the "Speed Dialing" section in this manual and repeat the programming steps carefully. Note that numbers programmed into memory might not be retained if the telephone is unplugged from the line jack for a half hour or more. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | 210 Beige |
| Dimensions (L x W x H) | 8.27 x 2.5 x 2.99 inches |
| Item Weight | 1.06 pounds |
| Telephone Type | Corded |
| Power Source | Corded Electric (Line-powered, no AC adapter required) |
| Material | Plastic |
| Dialer Type | Single Keypad |
| Speed Dial Memory | 13 numbers (3 one-touch, 10 standard) |
| Keypad | Lighted |
| Mounting Options | Desk or Wall-mountable |
| Manufacturer | VTech |
| Country of Origin | Malaysia |
Warranty and Support
The AT&T brands are used under license. This product is covered by a one-year limited warranty. Any repair, replacement, or warranty service, and all questions about this product, should be directed to Advanced American Telephones.
For support and warranty information, please contact Advanced American Telephones at 1-800-222-3111.
For additional information and user instructions, refer to the enclosed documentation or visit the official AT&T Telephones website: www.telephones.att.com.
This product is fully modular for easy connection to ordinary inside premises telephone wiring.
Telephones identified with the TIA-1083 Compliant logo have reduced noise and interference when used with most T-coil equipped hearing aids and cochlear implants. The TIA-1083 Compliant logo is a trademark of the Telecommunications Industry Association. Used under license.







