SYSTEM OF AUTOMATIC TELEPHONE COMMUNICATION Russian patent published in 1994 - IPC

FIELD: communication equipment. SUBSTANCE: block diagram of coin-box telephone ATM-69/2 has communication device 1, interlock 2, calling unit 3, conversation unit 4, coin box 5, coin mechanism 6, alarm signalling unit 7, unit 8 of identification of communication direction, unit 9 of identification of denomination of coins, unit 10 of coin collection signal, unit 11 of check of coin collection, former 12 of continuation of conversation, termination unit 13, power supply unit 14. System of automatic telephone communication includes commutation device of automatic telephone exchange, station sets integrating matching device and unit of change of poles of conductors, job rating unit 19, connection identifier 20, unit 21 of payment metering, coin-box telephones 22. EFFECT: expanded application field. 2 dwg