Method and apparatus for matching operating revisions of a mobile station and a base station in a wireless data communication system

A method for use in a communication system, comprising:

• transmitting a request for establishing a communication link between a mobile station and a base station;
• transmitting, from said mobile station, a first location update message including a classmark information for indicating a first revision level used by said mobile station for communication with said base station;
• detecting, at said base station, said first revision is incompatible with a second revision level used by said base station and ignoring said request for establishing said communication link between said mobile station and said base station;
• repeating, for a number of times, said transmission of said request for establishing said communication link between said mobile station and said base station;
• detecting, at said mobile station, failure of establishing said communication link with said first revision level based on repeating said request said number of times;
• changing said first revision level to said second revision level at said mobile station;
• repeating, at least one more time, said transmission of said request for establishing said communication link between said mobile station and said base station and transmitting a second location update message including said classmark information for indicating said second revision level used by said mobile station for communication with said base station.