Abstract: Automatic coin telephone station and central office systems have advanced recently to the point where facilities have been designed for accumulating at a centralized location data on the exact numbers and types of coins deposited in coin phones. This disclosure presents an arrangement for automatically processing a coin box removal signal (88) from a coin telephone station (1) to the central office (6) so that a determination can be made of the exact numbers and types of coins in the coin box at the time of its removal from the coin phone for collection. Each station is equipped with memories (16, 17, 18) for three different types of coins and a coin box removal memory (83). Flip-flop and logic gating control circuitry (26) is responsive to interrogate and coin collect signals received from a central office for sequentially interrogating the memories and frequency shift keying the stored information to the central office.

Abstract: Automatic coin telephone station and central office facilities are disclosed for deriving data on the exact numbers and types of coins deposited during initial and overtime periods. Each station is equipped with nickel, dime and quarter binary counter memories and with flip-flop and logic gating control circuitry which is responsive to interrogate, coin collect and return signals received from the central office for sequentially interrogating the memories and frequency shift keying the stored information to the central office. A coin processor and memory, preference and connector, interrogate tone generator, and detectors are integrated into the central office switching system.

Abstract: A signaling arrangement for indicating to a remote location that coins in the cash receptacle of a coin-operated device have accumulated to a predetermined fill level is disclosed. In particular, a coin telephone station is disclosed, which station has a tone oscillator connected to an associated central office by a telephone line. The oscillator is controlled by a three-input logic gate. One input of the gate is enabled by a coin probe when the coin box is filled to a predetermined level. Another input of the logic gate is enabled by a flip-flop that is set when a coin collect potential is received by the station over the line. The third input of the logic gate is enabled when talking battery is applied to the line. The logic device thereupon operates the oscillator which generates a tone signal that is sent to the central office over the line, indicating to the office that the coin box is full.

Abstract: The speech path in an escrow coin telephone system wherein coins may be deposited throughout the talking state is maintained free of potentially disruptive coin collection signals. After the serving switching office has calculated the rate for the particular call but prior to called party answer, it transmits a series of rate metering impulses to the station set. A pulse generator at the station set is then preset at a frequency corresponding to the calculated rate and allows the credit balance to be reduced after each unit interval. Logic is provided to collect the coin of highest denomination while the cell is in progress and to ensure a fair coin refund after hangup so that large denomination coins are not collected when smaller ones are available.

Abstract: Automatic coin telephone station and central office facilities are disclosed for deriving data on the exact numbers and types of coins deposited during initial and overtime periods. Each station is equipped with nickel, dime and quarter binary counter memories and with flip-flop and logic gating control circuitry which is responsive to interrogate, coin collect and return signals received from the central office for sequentially interrogating the memories and frequency shift keying the stored information to the central office. A coin processor and memory, preference and connector, interrogate tone generator, and detectors are integrated into the central office switching system.