8.5 Hiding your number
When you call a subscriber, your phone number will be displayed there (if the opposite terminal supports this capability). If Hide Number is activated (indicated by the activated button), your phone number will not be transmitted to the person being called.
To prevent your number from being displayed
1 Click on .
* Your phone number will not be displayed for outgoing calls.
Click on this button again to display your phone number again.
or
1 Click with the right mouse button on a Line button.
*The context menu will appear.
2 In the context menu, select Properties.
*The Properties of… window will appear.
3 Activate the checkbox Hide Number/URI.
* Your phone number will not be displayed for outgoing calls.
Start this function again in order to resume the transmission of your phone number.
 
Telephone number suppression when making external calls must also be supported by your ISDN line, otherwise only the display of your extension number will be suppressed.