No Dial Tone

  1. Wireless
  2. Device help center
  3. ATT
  4. Wireless Internet (MF279)
  5. No Dial Tone
Try these troubleshooting methods if your AT&T Wireless Internet does not produce a dial tone when a phone is plugged in.

  1. Make sure the power cord is plugged into the AT&T Wireless Internet and a power outlet. Do not connect the AT&T Wireless Internet to a power outlet that is controlled by a wall switch.

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  2. Make sure your AT&T Wireless Internet is powered on. Switch the power button to ON to turn on the device.

    device 5174/9006707_02.jpg

  3. Make sure that your cordless phone has power, and is connected properly to the AT&T Wireless Internet.

    device 5174/9006707_03.jpg

  4. Move your AT&T Wireless Internet to an area with a stronger cellular signal, typically near a window or outside wall.
    Note: Three to four green/blue bars indicate a strong signal and is recommended for optimal performance. Less than three bars indicates a moderate signal and may be sufficient.

    device 5174/9006707_04.jpg

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