Method for validating a communication link

A method for validating a wired communication link between a base station and a second device connected in a telecommunication network, the method comprising the steps of:

• (a) transmitting a first authentication request signal from said second device to said base station, said first authentication request signal having a first random number;
• (b) generating within said base station a first authentication result based upon said first random number;
• (c) generating within said second device a second authentication result based upon said first random number;
• (d) comparing said first authentication result and said second authentication result to authenticate said base station;
• (e) transmitting a second authentication request signal from said base station to said second device, said second authentication request signal including a second random number;
• (f) generating within said second device a third authentication result based upon said second random number;
• (g) generating within said base station a fourth authentication result based upon said second random number;
• and
• (h) comparing said third authentication result and said fourth authentication result to authenticate said second device.

A method for authenticating a cordless base station operating in a communication system having authorization equipment, said cordless base station having an identification code associated therewith, the method comprising the steps of:

• transmitting an authentication request from said authorization equipment to said cordless base station, said authentication request including a random number generated at said authorization equipment;
• generating a first authentication result based upon said random number and a first identification number;
• transmitting said first authentication result to said authorization equipment;
• transmitting said identification code associated with said cordless base station to said authorization equipment;
• generating a second authentication result at said authorization equipment based upon said random number and said first identification number;
• and
• comparing said first authentication result and said second authentication result to authenticate said cordless base station.

A method for authenticating authorization equipment operating in a communication system having a cordless base station coupled to a telephone network, said cordless base station having an identification code associated therewith, the method comprising the steps of:

• transmitting an authentication request from said cordless base station to said authorization equipment, said authentication request including a random number generated at said cordless base station and a first identification number;
• generating a first authentication result at said cordless base station, said first authentication result being based upon said random number and said first identification number;
• generating a second authentication result at said authorization equipment based upon said random number and said cordless base station identification code;
• transmitting said second authentication result to said cordless base station;
• and
• comparing said first authentication result and said second authentication result to authenticate said authentication equipment.

A method for authenticating authorization equipment operating in a communication system having a cordless base station coupled to a telephone network, said cordless base station having an identification code associated therewith, the method comprising the steps of:

• transmitting an authentication request from said cordless base station to said authorization equipment, said authentication request including a random number generated at said cordless base station and a first identification number;
• generating a first authentication result at said cordless base station, said first authentication result being based upon said random number and said first identification number;
• receiving at said cordless base station a second authentication result generated at said authorization equipment based upon said random number and said cordless base station identification code;
• and
• comparing said first authentication result and said second authentication result to authenticate said authentication equipment.

A method for validating a wired communication link between a base station and a second device connected in a telecommunication network, the method comprising the steps of:

• (a) transmitting a first authentication request signal from said second device to said base station, said first authentication request signal having a first random number;
• (b) transmitting a second authentication request signal from said base station to said second device, said second authentication request signal including a second random number and a first authentication result generated within said base station based upon said first random number;
• (c) authenticating said base station by comparing said first authentication result to a second authentication result generated within said second device based upon said first random number;
• (d) transmitting a third authentication result from said second device to said base station, said third authentication result generated within said second device based upon said second random number;
• and
• (e) authenticating said second device by comparing said third authentication result to a fourth authentication result generated within said base station based upon said second random number.