Method and system of updating a function value on a subscriber unit and a network

摘要

In a wireless subscriber unit ( 26 ) having a receiver ( 36 ) for receiving a message ( 38 ) sent from a transmission source ( 21 ), a transmitter ( 60 ) for sending a change notification message ( 28 ) to the transmission source, and a function key ( 52 ) which operates using a function value ( 50 ), a method ( 100 ) for updating ( 108 or 114 ) the function value includes the steps of operating the function key using a first function value and sending ( 111 or 118 ) the change notification message to the transmission source. The method can further include the steps of substituting a second function value for the first function value in response to receiving a message, communicating confirmation of the substitution of the second function value for the first function value from the wireless subscriber unit to the transmission source, and operating the function key using the second function value.