Appendix

Troubleshooting

If you have difficulty with your telephone, please try the suggestions below. For customer service, visit our website at www.telephones.att.com or call 1 (800) 222-3111. In Canada, dial 1 (866) 288-4268.

My telephone does not work at all.

•Make sure the power adapter is securely plugged into an electrical outlet not controlled by a wall switch.

•Make sure you plug the telephone line cord securely and firmly into the telephone jack and the telephone wall jack.

•Unplug the power adapter from the electrical outlet. Wait for approximately 15 seconds, then plug it back in. Allow up to one minute for the telephone to reset.

•You may need to purchase three AA alkaline batteries as backup batteries to make the telephone work in the event of a power failure. Please refer to Optional backup battery installation on page 4 in this user’s manual.

•Disconnect the telephone base from the telephone wall jack and plug in a working telephone. If that telephone does not work, the problem is probably in the wiring or the local service. Call your telephone service provider.

I cannot get a dial tone.

•First, try all suggestions above.

•Make sure you plug the handset cord securely and firmly into the handset jack on the telephone base and the corded handset.

•Your telephone line cord might be malfunctioning. Try installing a new telephone line cord.

•Make sure HOLD is not pressed.

•If there is no dial tone when the HEADSET key is pressed, make sure a corded headset is firmly connected in the headset jack.

•If you are only using one telephone line, make sure to set it as the primary line (see Set the primary line on page 18).

•If the previous suggestions do not work, disconnect the telephone base from the telephone jack and connect to a different telephone. If there is no dial tone on that telephone either, the problem is in your wiring or local service. Contact your telephone service provider.

I cannot dial out.

•First try all the suggestions above.

•Make sure there is a dial tone before dialing. The telephone might take a second or two to produce a dial tone. This is normal. Wait an extra second before dialing.

•Check that all the telephones connected to the same telephone line are

hung up.

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AT&T ML17939, ML17959 Troubleshooting, My telephone does not work at all, Cannot get a dial tone, Cannot dial out
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ML17959, ML17939 specifications

The AT&T ML17939 and ML17959 models are two of the latest additions to AT&T's line of reliable and feature-rich corded telephones. Designed primarily for home and small office use, these models incorporate essential features that cater to the modern user's needs while ensuring robustness and ease of use.

One of the main features of the ML17939 and ML17959 is their large, easy-to-read backlit display. This display enhances visibility in various lighting conditions, an important characteristic for users who may have visual impairments or those who prefer a user-friendly interface. The backlight provides convenience, allowing users to easily see who is calling even in dim environments.

Both models offer a 40-number memory capacity, allowing users to store frequently dialed numbers for quick access, which is particularly beneficial in a busy home or office setting. The one-touch speed dial feature streamlines communication, reducing the time it takes to reach important contacts. Additionally, the ML17939 and ML17959 are equipped with a Caller ID function, providing users with instant recognition of incoming calls, further enhancing the user experience.

The phones utilize advanced security technologies, such as DECT (Digital Enhanced Cordless Telecommunications) technology for secure and clear call quality, minimizing interference from other devices. This helps ensure that conversations remain private and crisp, which is essential for both personal and professional calls.

Moreover, these models feature built-in speakerphones that allow for hands-free communication. This function is particularly beneficial for multitasking, enabling users to handle calls while attending to other tasks. The adjustable volume controls also contribute to a personalized user experience, allowing callers to set their preferred audio levels.

In terms of design, both the ML17939 and ML17959 models boast a sleek and modern appearance, fitting seamlessly into any environment. Their compact design is complemented by lightweight construction, making them easy to move and place as needed.

Overall, AT&T's ML17939 and ML17959 models stand out with their blend of functionality, advanced features, and user-friendly design. Ideal for those seeking a reliable and efficient corded telephone solution, these models aptly address the communication needs of contemporary users, making them an excellent choice for both home and office applications.
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