Appendix B

Troubleshooting

My cordless handset isn’t performing normally.

•Make sure the power cord is securely plugged into the telephone base. Plug the unit into a different, working electrical outlet not controlled by a wall switch.

•Move the cordless handset closer to the telephone base. You might have moved out of range.

•Reset the telephone base. Unplug the unit’s electrical power. Wait for 15 seconds then plug it back in. Allow up to one minute for the cordless handset and telephone base to reset.

•Other electronic products can cause interference to your cordless phone. Try installing your phone as far away from these types of electronic devices as possible: television sets, VCRs, or other cordless telephones.

The handset registration is unsuccessful.

Follow the steps below to re-register the handset.

1.Make sure the handset is out of the telephone base or charger and shows NOT REGISTERED before you begin registration.

2.Press and hold HANDSET LOCATOR for about four seconds (until the red IN USE light on the telephone base is on) and then release the button.

3.Place the unregistered handset into telephone base or charger.

Refer to the Handset registration section on page 11 for details.

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AT&T TL90078 user manual Troubleshooting
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TL90078 specifications

The AT&T TL90078 is a highly acclaimed IP Phone that caters to the needs of modern businesses seeking reliable communication solutions. Designed with a focus on versatile functionality and ease of use, the TL90078 offers a range of features that enhance productivity in a corporate environment.

One of the standout characteristics of the TL90078 is its user-friendly interface. The IP phone is equipped with a large backlit display that allows for clear visibility, making it easier to navigate through menus, access contacts, and manage calls. This intuitive design aids users in efficiently handling their communication needs without unnecessary complications.

The TL90078 supports multiple line appearances, enabling users to manage several calls simultaneously. This feature is particularly valuable in busy office settings where efficient call management is crucial. Furthermore, the phone is compatible with both standard and high-definition audio, ensuring that conversations are crisp, clear, and free from disruptions.

In terms of connectivity, the TL90078 is designed to integrate seamlessly into existing VoIP infrastructures. It supports both Power over Ethernet (PoE) and traditional power options, providing flexibility in installation. This versatility means businesses can deploy the phone in various office layouts without the need for extensive wiring or modifications.

The device also incorporates advanced call management features, such as call forwarding, call waiting, and conference calling, allowing teams to collaborate effortlessly. The integration of productivity-enhancing applications further transforms the TL90078 into a powerful communication tool, with options for voicemail, speed dialing, and directory access directly from the handset.

Security is another critical aspect of the TL90078. The phone employs encryption protocols to protect sensitive communications, ensuring that businesses can operate securely without compromising on their data integrity.

In summary, the AT&T TL90078 is a robust IP phone that combines a user-friendly design with advanced features and technologies tailored for professional use. Its versatility, audio quality, and security capabilities make it a valuable asset for businesses aiming to enhance their communication systems. As organizations continue to adapt to evolving communication needs, the TL90078 stands out as a reliable choice in the competitive landscape of VoIP solutions.
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