Abstract: A method of status enquiry between a plurality of subscriber communication units in a wireless communication system includes the step of transmitting (220) a status enquiry message from a first subscriber communication unit (100) to a second subscriber communication unit. The second subscriber communication unit receives said status enquiry message and transmits (240) a status response message back to said first subscriber communication unit in response to said status enquiry message. This provides an ability to a subscriber unit to determine the status of another subscriber unit without the need to initiate a full call set-up to that subscriber unit. This allows the user to automatically ascertain whether the destination subscriber unit is available before making the call. The destination subscriber unit may automatically respond without user input, and preferably without the need for the user to be informed.