Try this...

1. Press the Features soft key if shown.
· To access the menu during a call, press the right arrow key or press the PHONE key and then press
the Features soft key.
2.Use the up and down arrow keys to scroll the display to the option Phone User.
3. Press the Select soft key or the OK button or the right arrow key.
4.Use the up and down arrow keys to scroll the display to the option Phone Screen Settings.
5. Press the Select soft key or the OK button or the right arrow key.
4.Use the up and down arrow keys to scroll the display to the option Display Name.
5. Press the Change soft key to change the setting or use the left or right arrow keys.
· Off
Display your extension number and the date and time on the phone when it is idle.
· On
Display your extension number and name on the phone when it is idle.
6. Press the Done soft key.

It is an excerpt from the the user guide of a 1408/1416. I assume it would be the same although the 1603 does have a smaller display.

-Todd

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