AT&T E5640 Adding new handsets, will be displayed again until a valid base ID has been entered

Models: E5643B

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will be displayed again until a valid base ID has been entered.

Adding new handsets

If the number is not entered correctly, the screen will be blank for a few seconds and

ENTER BASE ID

will be displayed again until a valid base ID has been entered.

After entering the code, press SELECT/MENU to accept the code to complete the registration process.

NOTE: In some cases, the last digit of the base ID may be an *. Treat that as part of the base ID and enter it into the handset for registration purpose.

NOTE: If an invalid base ID code is entered, there will be an error tone and the handset will continue to display ENTER BASE ID. To make corrections while entering the code, erase digits by pressing the DELETE/MENU key.

When a valid base ID has been entered and recognized by the telephone base, the screen will be blank for a few seconds and will show:

SEARCHING...

followed by a screen indicating the number for the newly registered handset.

HANDSET X

The new handset will be assigned the next available handset number (Handset 2, Handset 3, or Handset 4). A maximum of four handsets can be registered to each telephone base.

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AT&T E5640, E5655, E5644B, E5643B Adding new handsets, will be displayed again until a valid base ID has been entered