Quotables
"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
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| Number | Title | Issue Date |
| 6430274 | Validation query based on a supervisory signal A telephone system and method is provided for delaying authorization validation queries until after a called party accepts a telephone call. Queries are avoided not only in cases where the called phone line is busy or not answering, but also in cases wher... | 08/06/2002 |
| 6104795 | Method and apparatus for detecting and announcing pin fraud on coin telephones that use battery reversal pulses to meter charges Pin fraud of battery reversal pulse metered sophisticated coin telephones is detected, an announcement of the detected fraud made, and the fraud is stopped if the detected fraud continues by the method and apparatus of the invention. By carefully monitori... | 08/15/2000 |
| 6031898 | Validation query based on a supervisory signal A telephone system and method is provided for delaying authorization validation queries until a dialed phone is answered. This way, authorization validation queries are avoided in cases where a requested phone line is busy or not answered. In a collect ca... | 02/29/2000 |
| 6018570 | Methods and apparatus for regulating the remote ordering, authorization, access and control of services and service features associated with a terminal A method for use in an environment having a service provider, a subscribed terminal, and a remote terminal, for activating a service for the subscribed terminal. The method processes an order from a terminal and processes an authorization request from a t... | 01/25/2000 |
| 5909486 | Method and apparatus for awarding and redeeming prepaid telephone time A slot card issued by a slot club, or a membership card in another incentive award program, that is also capable of being used as phone calling card is provided. Free calling time is credited to the member's card account in response to the playing of the ... | 06/01/1999 |
| 5896446 | Coin operated telephone auditor A low-power, integrated coin acceptor for a payphone containing audit circuitry is described. The integrated coin acceptor connects to the telephone tip, ring and ground lines and connects to a dumb or smart payphone chassis to provide both coin validatio... | 04/20/1999 |
| 5894511 | Validation query based on a supervisory signal A telephone system and method is provided for delaying authorization validation queries until a dialed phone is answered. This way, authorization validation queries are avoided in cases where a requested phone line is busy or not answered. In a collect ca... | 04/13/1999 |
| 5757896 | Method and apparatus for preventing pin fraud on coin telephones that use battery reversal pulses to meter charges Pin fraud of battery reversal pulse metered sophisticated coin telephones is detected and prevented by the method and apparatus of the invention. By carefully monitoring within the switch office the loop current that is flowing in the 48 volt battery circ... | 05/26/1998 |
| 5420915 | Apparatus for instruction in use of telephone A portable apparatus for demonstrating the operation of one or more telephones by simulating an active telephone line in which a ring tone generator (74), busy tone generator (72), dial tone generator (70), confirmation tone generator (146) and power ring... | 05/30/1995 |
| 5373552 | Tone Burst Generator A tone burst generator where a continuous tone voltage is applied across two series-connected semiconductor switches each having an ON state and an OFF state. A first control circuit controls the state of the first switch and the variable impedance in an ... | 12/13/1994 |
| 5272748 | Enhanced speed calling Enhanced speed calling is provided on a network basis for public access telephone stations such as coin telephones and wireless public Telepoint services stations. The system permits single digit access to voice recorded announcements regarding long dista... | 12/21/1993 |
| 5226073 | Telephone network credit card calling apparatus and method of telephone network operation with credit card companies Apparatus for enabling a telephone network to establish connections between calling and called telephones in accordance with called telephone numbers identified with ones of a plurality of calling party credit cards. The apparatus is connected by data lin... | 07/06/1993 |
| 5168518 | Coin tone validator for telephone paystations A coin tone validator (CTV) is located in a local central office and is connected between a pay telephone and a switching system. The CTV monitors DC loop current changes using opto-couplers inserted into a local loop in addition to measuring standard 170... | 12/01/1992 |
| 5086457 | Prepayment data transmission system The invention relates to a prepayment indoor telephone in which payment is performed by means of memory cards. In order to make the use of the telephone set (104) secure, a verification module (110) is connected to its telephone line (130) in the vicinity... | 02/04/1992 |
| 4760594 | Answer supervision detection unit for pay telephone system In one embodiment, an answer supervision detection unit is disposed intermediate a tandem switch and the public switched network. Typically, the public switched network is two or four wire E & M lines or T1 lines. The E & M lines carry answer supervision ... | 07/26/1988 |
| 4706275 | Telephone system A telephone system enabling prepayment for telephone calls, wherein special code and credit information is stored in memory in special exchanges and debited as the call progresses.... | 11/10/1987 |
| 4674114 | Fraud prevention in an electronic coin telephone set In an electronic coin telephone set, a fraud prevention arrangement prevents fraudulent coin tones originating at a telephone transmitter from being provided to a central office over a coin subscriber loop. The arrangement comprises a first and second tra... | 06/16/1987 |
| 4361731 | Coin telephone control circuit Coins deposited in a coin telephone are collected or refunded by selectively discharging one of a plurality of capacitors (10,12) through a current limiter (46) for a period just long enough to operate the coin control relay (38) in the telephone. Use of ... | 11/30/1982 |
| 4039768 | Pay telephone station monitor system A pay telephone station monitor system which monitors the operation of a pay telephone station and detects malfunction of the pay station equipment. An alarm signal is produced upon detection of such malfunction which signal is transmitted to a central of... | 08/02/1977 |
| 4010328 | Out-of-band signaling method and apparatus to adapt payphones to telephone systems An out-of-band signaling method and apparatus are provided to facilitate the adaptation of payphones to telephone systems, as for example subscriber carrier systems. Part of the speech band is made unavailable to the subscribers and is employed for signal... | 03/01/1977 |
