standard entitled u201c mobile station base station compatibility standard for dual mode wideband spread spectrum cellular system u201d alternatively the wireless communication system may be designed in accordance with the ansi j std 008 standard entitled u201c personal station base station compatibility requirements for 1 8 to 2 0 ghz code division multiple access cdma personal communications systems u201d however it should be noted that the teachings of the present invention are applicable to other wireless communication systems whether cellular or non cellular and regardless of the modulation scheme employed for example the present invention is equally applicable to time division multiple access tdma based systems such as the u s tdma standard is 54 or the pan european standard global system for mobile communications gsm additionally the teachings of the present invention are applicable to analog frequency modulation communication systems such as the advanced mobile phone system amps fig2 and its related description is described in the context of a wireless network wherein the wireless network acts as a communicating medium between the remote equipment units and the central controller as well as between the central controller and the wireless pagers of repair persons in practice various different alternative embodiments may be utilized e g two separate networks may be utilized wherein the first network facilitates communications between the remote equipment units and.