Reconfigurable subscriber terminal for a wireless telecommunications system

A subscriber station for the wireless connection of user telecommunications equipment to a remote central station of a wireless telecommunications system, said subscriber station comprising:

• a transmitter/receiver for wireless communication with said central station;
• at least one telephone line for connection to subscriber telecommunications equipment;
• and
• a communications controller connected between said transmitter/receiver and said telephone line for processing signals for transmission and/or received signals, said subscriber station being configurable in response to wireless programming signals representative of control code down-loaded from said central station, wherein said communications controller comprises:
• a plurality of memory portions for successive versions of said executable code, each memory portion containing a version of said executable code being associated with a version number for said executable code;
• and
• processing means responsive to said version numbers for executing executable code from the memory portion associated with the most recent valid version number, said communications controller being arranged to load a subsequent version of executable code down-loaded from said central station into a memory portion not containing the executable code being executed at that time in order to prevent interruption of subscriber station operation, a valid version number for said down-loaded executable code being associated with the memory portion concerned following successful down-load.