Frequently asked questions (FAQs)

Welcome to the AT&T product support center. To get started: select a product category from the left, or enter your model number below to go straight to support and troubleshooting for that product.

Product Troubleshooting

Problem:

Why does it say NO LINE on my handset display?

Solution:

Tip 1 of 5

The idle handset will display NO LINE if it does not detect a live telephone line. Check the telephone line connection both at the phone jack and the base.

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