You can determine, for each call you make, whether your telephone number appears on another phone’s caller ID. In most service areas, when you call others, your name is presented to their caller ID (if they subscribe). With Send own caller ID, you can block or send the display of your number when you make a call. Note: Send own caller ID might not be available in your wireless system. Contact your service provider for details and availability. Also note that this feature is effective only when you call a number that is equipped with caller ID. Before you can use Send own caller ID, you must first store its feature code. Otherwise, this feature might not appear on your phone’s menu