You can select to withhold your number on external calls.
Your system administrator can configure whether you can access this menu.
Note:
Use of this option depends on the external line provider. In some cases, attempting to use this feature can causes calls to fail. If this occurs, the feature should be switched off.
Procedure
Press the Features soft key if shown.
To do this during a call, press the PHONE key and then press Features.
Use cursor keys to select Call Settings.
Use the up and down cursor keys to highlight Withhold Number.