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JPH0815283B2 |
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JPH0825862A |
PURPOSE: To easily and effectively identify the truth or false of the residual call counts of an IC card visually by providing an identification layer displayed with different color from the color of the surface of a card base material t...
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JPH088615B2 |
A method and apparatus to enable a low power telephone controller to operate with either a carbon microphone or a dynamic microphone is described. A jumper in a preamplifier and filter circuit is preset to accommodate the audio transfer ...
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JPH088613B2 |
A method and apparatus for the detection and prevention of pin fraud in a coin operated telephone is disclosed. A circuit detects loss of loop current and triggers the opening of a pair of switches thereby disconnecting the microphone fr...
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JPH088612B2 |
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JPH088614B2 |
A standard keyboard or keypad for a coin operated telephone is connected to balance an artificial line rather than the actual phone line. The artificial line simulates operating conditions at the end of the loop regardless of whether the...
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JPH082076B2 |
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JPH07123274B2 |
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JPH0755640Y2 |
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JPH07118733B2 |
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JPH07118750B2 |
A satellite communication charging system is arranged between a parent station apparatus and child stations installed in a plurality of areas. A plurality of pay phone sets are respectively connected to the child stations. The parent sta...
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JPH0753326Y2 |
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JPH0753325Y2 |
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JPH0744386U |
[Purpose] Give public telephones a facsimile function. [Constitution] Connect a facsimile to the circuit of a public telephone.
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JPH07104970B2 |
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JPH07105836B2 |
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JPH07283890A |
PURPOSE: To obtain a private branch of exchange in which a talking is made within a pre-paid speech charge decided in advance for a prescribed period. CONSTITUTION: An available speech charge for a prescribed period in extension telephon...
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JPH0747003Y2 |
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JPH07273912A |
PURPOSE: To obtain the public telephone set whose long time call is regulated. CONSTITUTION: An accumulated speech time from a speech start point of time by a speech time count section 12 is visually displayed on a speech time display se...
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JPH0745821Y2 |
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JPH07264332A |
PURPOSE: To display accumulated speech time or remaining speech time at every frequency. CONSTITUTION: A frequency subtraction operation is performed by a remaining frequency subtraction part 12 and a clock operation by a time clock part...
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JPH0743460Y2 |
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JPH07508382A |
A testing system for wireless communication networks, particularly cellular networks, having a test set located in a cell site which communicates through the cell's base station to a responder at the mobile telephone switching office (MT...
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JPH0783414B2 |
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JPH0782571B2 |
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JPH07231367A |
PURPOSE: To eliminate the need of reading a credit card at a subscriber terminal, to process a subscriber registration request on line and to enable immediate use. CONSTITUTION: User terminals 20 installed in a rental company 100 and a m...
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JPH0777456B2 |
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JPH0777403B2 |
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JPH07212504A |
PURPOSE: To make a call through the use of a prepaid card except for a telephone card by calculating unit call time from an originated dial number and executing charging as against sum information which is read at every unit call time. C...
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JPH07203083A |
PURPOSE: To perform radio telephone communication without limiting the usable terminal. CONSTITUTION: When a magnetic card 2 which stores the subscriber individual data such as ID numbers and individual code number in an information stor...
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JPH07203087A |
PURPOSE: To provide the public telephone set capable of controlling the communication time and preventing a long-talk over telephone which is a nuisance to others. CONSTITUTION: When a communication time control part 12 accepts the first...
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JPH0773315B2 |
In a telephone apparatus used for a telephone system such that the telephone set is connected to a remote destination telephone set through telephone circuits after an ID number of a subscriber has been transmitted to the telephone compa...
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JPH0733479Y2 |
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JPH0771321B2 |
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JPH0739135U |
[Purpose] When there is a temporary request to install a public telephone, even if the communication line, power supply, etc. cannot be secured, it will be possible to respond immediately. [Constitution] A mobile public telephone device ...
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JPH07177267A |
PURPOSE: To make possible a re-calling process after the on-hook operation of a public telephone set user without reinserting a prepaid card(PC) by temporary stopping the PC from being returned for a period, holding the balance of the PC...
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JPH07177268A |
PURPOSE: To eliminate the need to insert and extract cards frequently by putting plural cards in a card storage part and then drawing a top card when the call rate becomes 0. CONSTITUTION: The cards 8 are put in the card storage part bef...
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JPH07505988A |
An electronic security system includes an electronic lock mechanism and an electronic key, each of which is provided with a microprocessor controller and a memory storing data including an ID code and encryption key codes. The lock micro...
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JPH0758994B2 |
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JPH0758991B2 |
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JPH0756668B2 |
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JPH07147613A |
PURPOSE: To prevent the increase of the usable amount of the user of a prepaid card used for card type public telephone sets and, at the same time, to minimize the capacity of a memory which stores the usable amount. CONSTITUTION: A prep...
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JPH07131559A |
PURPOSE: To prevent the illicit calls which are caused by the illicit operations of public telephone sets. CONSTITUTION: The abnormal voltage detecting circuits 3-7 compare the potentials of trunk lines L1 and L2 stored in a public telep...
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JPH07123180A |
PURPOSE: To detect illegal use of a card quickly and properly in the public telephone set. CONSTITUTION: When a card is used to make a call through a public line LN1, a private line LN2 is provided and each information of the card in use...
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JPH07115480A |
PURPOSE: To send an alarm sender and to inform burglary information to a custodian when the burglary of a safe occurs by incorporating an alarm unit and an alarm transfer circuit in a public telephone set. CONSTITUTION: When the safe 9 i...
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JPH07115481A |
PURPOSE: To provide open interactive environment by displaying an image in a real image at the front of a talker, and performing communication with an opposite TV telephone set in a state where a line of sight coincides. CONSTITUTION: Th...
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JPH07111550A |
PURPOSE: To forcibly open a speech circuit of a public telephone set, etc., when such a loop that does not operate a conventional detecting element by some means. CONSTITUTION: A loop detecting circuit 1 is placed between a diode bride a...
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JPH0720749U |
[Purpose] Provided is a public telephone failure display device that makes it clear to the user that the card cannot be used in the event of a failure of the card-type public telephone. [Constitution] The power supply to the card usable ...
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JPH0720653U |
[Purpose] When recording and reproducing in-call information on a card in order to prevent unauthorized use due to withdrawal of the card during a call, it is possible to suppress an increase in power consumption and processing time of t...
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JPH0713315Y2 |
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