EP0252680A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Automatic dialing apparatus for establishing connections between authorised subscribers
Assignee: Tozai Bussan Co Ltd
•
Filing: 1987-07-01
•
Granted: —
•
Expires: 2007-07-01
Abstract
Abstract An automatic dialing apparatus (10) comprises a numeral entry device (47) for inputting numerals and a memory (22) for storing telephone directory numbers of authorized subscribers and their abbreviated dialing numbers in locations addressable as a function of the input numerals. For originating a call, the input numerals are used as an address pointer of the memory. An addressed telephone number is sent to a telephone switching system to allow a switched connection to be established to a called party and an addressed abbreviated dialing number is subsequently sent through the connection to the called party. On termination of the call to the called party, a coincidence is detected between the received abbreviated dialing number and an abbreviated dialing number assigned to the called party to verify authorization on detection of the coincidence. The latter is sent to the calling party to permit it to detect a coincidence between it and a copy of the number sent to the called party to verify authorization on detection of the last-mentioned coincidence.
Inventors
- 👤 Mitsuo Kikuchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 18:23
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/66; H04M1/26; H04M1/27; H04M1/274; H04M1/2745
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
265 words
An automatic dialing apparatus adapted to be connected to a telephone switching system, said apparatus having call origination and call termination modes of operation, comprising: numeral entry means; memory means for storing telephone directory numbers of authorized subscribers and abbreviated dialing numbers in storage locations addressable as a function of numerals entered through said numeral entry means during said call origination mode, said telephone directory numbers and said abbreviated dialing numbers corresponding respectively to each other; tone burst transmit means; tone burst receive means; means operational in said call origination mode for causing said transmit means to transmit the addressed telephone directory number to said telephone switching system to allow a switched connection to be established to a called party having said automatic dialing apparatus and causing said transmit means to transmit the addressed abbreviated dialing number through said connection to said called party; means operational in said call termination mode for causing said receive means to receive an abbreviated dialing number from a calling party having said automatic dialing apparatus, detecting a coincidence between said received number and an abbreviated dialing number assigned to the called party, verifying authorization on detection of said coincidence and causing said transmit means to transmit a copy of said assigned abbreviated dialing number to said calling party; and means operational in said call origination mode for causing said receive means to receive said copy returned from the called party, detecting a coincidence between da copy of said abbreviated dialing number transmitted to said called party and the received copy and verifying authorization on detection of the last-mentioned coincidence.
Claim 2
Dependent Claim
265 words
An automatic dialing apparatus adapted to be connected to a telephone switching system, said apparatus having call origination and call termination modes of operation, comprising: numeral entry means; memory means for storing telephone directory numbers of authorized subscribers and abbreviated dialing numbers in storage locations addressable as a function of numerals entered through said numeral entry means during said call origination mode, said telephone directory numbers and said abbreviated dialing numbers corresponding respectively to each other; tone burst transmit means; tone burst receive means; means operational in said call origination mode for causing said transmit means to transmit the addressed telephone directory number to said telephone switching system to allow a switched connection to be established to a called party having said automatic dialing apparatus and causing said transmit means to transmit the addressed abbreviated dialing number through said connection to said called party; means operational in said call termination mode for causing said receive means to receive an abbreviated dialing number from a calling party having said automatic dialing apparatus, detecting a coincidence between said received number and an abbreviated dialing number assigned to the called party, verifying authorization on detection of said coincidence and causing said transmit means to transmit a copy of said assigned abbreviated dialing number to said calling party; and means operational in said call origination mode for causing said receive means to receive said copy returned from the called party, detecting a coincidence between da copy of said abbreviated dialing number transmitted to said called party and the received copy and verifying authorization on detection of the last-mentioned coincidence.
Claim 3
Dependent Claim
64 words
An automatic dialing apparatus as claimed in claim 1, further comprising means for connecting a communication device associated with said called party to a terminating end of said connection in response to the detection of the first-mentioned coincidence and connecting a communication device associated with the calling party to an originating end of said connection in response to the detection of the last-mentioned coincidence.
Claim 4
Dependent Claim
35 words
An automatic dialing apparatus as claimed in claim 1, wherein said abbreviated dialing numbers stored in said memory means are addressable as a function of an abbreviated dialing number entered through said numeral entry device.
Claim 5
Dependent Claim
65 words
An automatic dialing apparatus as claimed in claim 1, further comprising means operational in said call origination mode for providing display of said abbreviated dialing number entered through said numeral entry means and the abbreviated dialing number received from the called party and a manually operated key for forcibly connecting the communication device associated with said calling party to said originating end of said connection.
Claim 6
Dependent Claim
64 words
An automatic dialing apparatus as claimed in claim 1, further comprising means operational in said call termination mode for providing display of said abbreviated dialing number received from said calling party and the abbreviated dialing number assigned to the called party and a manually operated key for forcibly connecting the communication device associated with said called party to said terminating end of said connection.
Claim 7
Dependent Claim
25 words
An automatic dialing apparatus as claimed in claim 1, wherein said memory means is detachable from said apparatus for storing and rewriting the contents therein.
Claim 8
Dependent Claim
58 words
An automatic dialing apparatus as claimed in claim 6, wherein said memory means comprises a random access memory having a backup battery to permit the memory to retain stored information when detached from said apparatus, further comprising means for storing new telephone directory numbers and associated abbreviated dialing numbers while said random access memory is in said apparatus.
Claim 9
Independent Claim
203 words
A method of establishing a connection through a telephone switching system between calling and called parties, comprising: storing telephone directory numbers of authorized subscribers and abbreviated dialing numbers in storage locations addressable as a function of numerals, said telephone directory numbers and said abbreviated dialing numbers corresponding respectively to each other; entering numerals and addressing said stored telephone directory numbers and said abbreviated dialing numbers as a function of the entered numerals; transmitting the addressed telephone directory number to said telephone switching system to allow a switched connection to be established to said called party; transmitting the addressed abbreviated dialing number from said calling party through said connection to said called party; storing a copy of the abbreviated dialing number transmitted to said called party; receiving said abbreviated dialing number transmitted from the calling party and detecting a coincidence between said received number and an abbreviated dialing number assigned to the called party; verifying authorization on detection of said coincidence and transmitting a copy of said assigned abbreviated dialing number to said calling party; receiving said copy returned from the called party and detecting a coincidence between said stored copy and the received copy; and verifying authorization on detection of the last-mentioned coincidence.
Claim 10
Independent Claim
203 words
A method of establishing a connection through a telephone switching system between calling and called parties, comprising: storing telephone directory numbers of authorized subscribers and abbreviated dialing numbers in storage locations addressable as a function of numerals, said telephone directory numbers and said abbreviated dialing numbers corresponding respectively to each other; entering numerals and addressing said stored telephone directory numbers and said abbreviated dialing numbers as a function of the entered numerals; transmitting the addressed telephone directory number to said telephone switching system to allow a switched connection to be established to said called party; transmitting the addressed abbreviated dialing number from said calling party through said connection to said called party; storing a copy of the abbreviated dialing number transmitted to said called party; receiving said abbreviated dialing number transmitted from the calling party and detecting a coincidence between said received number and an abbreviated dialing number assigned to the called party; verifying authorization on detection of said coincidence and transmitting a copy of said assigned abbreviated dialing number to said calling party; receiving said copy returned from the called party and detecting a coincidence between said stored copy and the received copy; and verifying authorization on detection of the last-mentioned coincidence.
Claim 11
Dependent Claim
43 words
A method as claimed in claim 8, further comprising connecting a communication device to one end of said connection on detection of the first-mentioned coincidence, and connecting a communication device to the other end of said connection on detection of the last-mentioned coincidence.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.