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    • 6. 发明专利
    • TALKING DESTINATION REPLY DETECTOR
    • JPH03154549A
    • 1991-07-02
    • JP29234889
    • 1989-11-13
    • NIPPON TELEGRAPH & TELEPHONE
    • ASAMIZU HIROSHISANUKI SUSUMU
    • H04M15/00H04M1/00H04M1/65H04M1/656H04M15/30
    • PURPOSE:To attain accurate reply detection by generating a loop in a pseudo way when off-hook is detected and an end of dial is detected and identifying a signal on a telephone line with a discrimination circuit while a signal such as voice from a terminal telephone set is tentatively restricted. CONSTITUTION:The detector is provided with a signal detection circuit 11 detecting a ring back tone, a busy tone sent from an exchange and a voice signal from a talking destination or the like, a hook detection circuit 3 detecting off-hook or on-hook from the terminal equipment 1 and a dial monitor circuit 6 monitoring the dial signal from the terminal equipment 1. Then the detector is provided with a termination circuit 14 generating a loop in a simulating way and restricting a signal from a voice signal from the terminal equipment 1 tentatively, a monitor circuit 7 sending various signals sent from an exchange and a talking destination to a telephone line L1, 2 to the terminal equipment 1 and a discrimination circuit 12 identifying the reply of the opposite party. As a result, the polarity inversion of the telephone line and the signal from the exchange and the talking destination voice signal are detected while controlling the call to the telephone line from the terminal equipment. Thus, accurate reply detection is implemented.
    • 7. 发明专利
    • VOICE CALLING TELEPHONE SET
    • JPH02113760A
    • 1990-04-25
    • JP26618688
    • 1988-10-24
    • NIPPON TELEGRAPH & TELEPHONE
    • WATABE KEIJISANUKI SUSUMU
    • H04M1/64
    • PURPOSE:To eliminate inconvenience that a nearest telephone set has to be utilized at the time of intending to communicate with a calling person by executing a unidirectional sounding from a speaker by the calling person and the communication with the calling person with the same telephone set. CONSTITUTION:The title telephone set is composed of a telephone line 2, an automatic answering part 6, a voice guidance sending part 7, a loudspeaker part 8, a telephone circuit network part 9, a handset part 10, an amplifying part 11, a chime sending part 12, a lamp light-up part 13, a power source part 14 and a telephone set case body 15. The telephone set is installed at a place where it can be installed when a small space exists inside and outside a house where unspecified many persons are gathered, the chime and light-up display to pay an attention to a rendezvous person is executed before an announcement, and thereafter, the sounding is executed by the voice of the calling person. When the rendezvous person exists, the call can be executed in the same way as the ordinary telephone set with the handset part 10. Thus, the calling person and incoming person can execute the necessary communication at one time, and the inconvenience to use other telephone sets can be solved.
    • 9. 发明专利
    • CHARGE SETTLING SYSTEM USING ID CARD
    • JPH02113661A
    • 1990-04-25
    • JP26607288
    • 1988-10-24
    • NIPPON TELEGRAPH & TELEPHONE
    • ASAMIZU HIROSHISANUKI SUSUMUNAKAYAMA HIROBUMIKUNIEDA MANABU
    • H04M15/00
    • PURPOSE:To eliminate an erroneous calculation by means of handwork and to shorten calculating time by calculating a calling charge or a using charge, notifying it to a charge settling device, and collecting and outputting the charges at every ID number at the time of settlement by means of a charge settling device. CONSTITUTION:At least one of plural card terminals is a telephone set card terminal 10, a charge managing device 30 collates whether or not the ID number of an ID card 100 has been registered beforehand in response to a connection request or a using request from the telephone set card terminal 10 or another card terminal 20, and only at the time of incidence, the device 30 connects a telephone set 60 to a line 50, or the device 30 permits the use of equipment 70, calculates the call charge or the using charge, notifies it to a charge settling device 40, and the charge settling device 40 collects and outputs the charge at every ID number at the time of the settlement. Consequently, a user can call an opposite party at an arbitrarily place, in addition, the other charges such as a drinking charge is automatically settled. Thus, the erroneous calculation due to the handwork is eliminated, and the calculating time can be shortened.