Method for remotely updating software code for personal handy phone system equipment

A method within a personal handy phone system for remotely updating software code stored within a portable station, said method comprising the steps of:

• a) a control terminal transmitting a unique preparatory signal to a cell station of said personal handy phone system (PHS) using an integrated services digital network (ISDN), wherein said unique preparatory signal is a precursor signal indicating that software code stored by said portable station is going to be updated;
• b) in response to receiving said unique preparatory signal, said cell station transmitting said unique preparatory signal to said portable station of said personal handy phone system using a wireless digital radio interface having a time division multiple access capability having frames that are time division duplexed wherein a single frame contains eight communication slots;
• c) in response to receiving said unique preparatory signal, said portable station determining if said unique preparatory signal is valid;
• d) in response to said unique preparatory signal being valid, said portable station transmitting a unique verification signal to said cell station using said wireless digital radio interface, wherein said unique verification signal indicates that said portable station is ready to receive updated software code;
• e) in response to receiving said unique verification signal, said cell station transmitting said unique verification signal to said control terminal using said integrated services digital network (ISDN);
• f) in response to receiving said unique verification signal, said control terminal transmitting said updated software code to said cell station using said integrated services digital network (ISDN);
• g) in response to receiving said updated software code, said cell station transmitting said updated software code to said portable station using said wireless digital radio interface;
• and
• h) in response to receiving said updated software code, said portable station storing said updated software code within a computer readable memory.

A method within a personal handy phone system for remotely updating software code stored within a cell station, said method comprising the steps of:

• a) a control terminal transmitting a unique preparatory signal to a cell station of said personal handy phone system (PHS) using a network, wherein said unique preparatory signal is a precursor signal indicating that software code stored by said cell station is going to be updated;
• b) in response to receiving said unique preparatory signal, said cell station determining if said unique preparatory signal is valid;
• c) in response to said unique preparatory signal being valid, said cell station transmitting a unique verification signal to said control terminal using said network, wherein said unique verification signal indicates that said cell station is ready to receive updated software code;
• d) in response to receiving said unique verification signal, said control terminal transmitting said updated software code to said cell station using said network;
• and
• e) in response to receiving said updated software code, said cell station storing said updated software code within a computer readable memory.