CORDLESS TELEPHONE SET Russian patent published in 1998 - IPC

FIELD: telephone communications. SUBSTANCE: telephone set has stationary and portable subsets interconnected through duplex radio communication channel. Stationary subset is connected to subscriber's line of telephone exchange. Telephone set does not need connection to 220-V supply mains. Stationary subset 1 is placed in telephone set case and has plug 2 for connecting to telephone exchange subscriber's line, calling assembly 3, power unit 4, talk-listen assembly 5, switch 6, subcarrier demodulator 7, antenna 8, socket 9, and light-emitting diode 10. Portable subset 11 is placed in handset and has storage cell 12, talk-listen assembly 13, electronic dial 14, plug 15, mode control assembly 16, antenna 17, calling assembly 18, subcarrier oscillator 19, and light-emitting diodes 20, 21. Telephone set can operate in following modes: wait call, receive incoming call, talk, call desired telephone exchange party by dialing number containing up to twenty-two digits; repeat last dialed number, interrupt dialing at any digit, store information about last dialed number. Current state of telephone set is checked by means light-emitting diodes 10, 20, and 21. EFFECT: improved design. 3 dwg