Network Service Preferences2603. Tap Done.For details about answering a waiting call, see page 96.You can cancel all of the call waiting settings at one timeby tapping Deactivate. Calls which come in during a callare recorded as missed calls.Caller IDYou can hide your phone number to prevent it frombeing displayed on the phone of the person being calledor send the number.When you select Default, the default setting provided bythe network is used.Note: Some networks do not allow the user to change thissetting.Active LineSome SIM cards may by used with two subscribernumbers, using the ALS (Alternate Line Service)feature. In this menu, you can select a line to be usedfor making calls.Note: Calls can be answered on both lines, regardless of theactive line.