JPS5637765A - Key telephone system - Google Patents

Key telephone system

Info

Publication number
JPS5637765A
JPS5637765A JP11344879A JP11344879A JPS5637765A JP S5637765 A JPS5637765 A JP S5637765A JP 11344879 A JP11344879 A JP 11344879A JP 11344879 A JP11344879 A JP 11344879A JP S5637765 A JPS5637765 A JP S5637765A
Authority
JP
Japan
Prior art keywords
cpu8
memory
subscriber
circuit
pushed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11344879A
Other languages
Japanese (ja)
Inventor
Ryoichi Yabata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11344879A priority Critical patent/JPS5637765A/en
Publication of JPS5637765A publication Critical patent/JPS5637765A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/44—Additional connecting arrangements for providing access to frequently-wanted subscribers, e.g. abbreviated dialling

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To store a number of subscriber numbers and then simplify the dial operation in the originating, by providing a memory to the private device of the subscriber and then storing once the subscriber number in the memory. CONSTITUTION:For the writing of the subscriber number into the memory, the of the dial button 15 is pushed via the telephone 5, and this information tells the start of writing to the CPU8 via the data D interface IF14 and the input/output IF15. Then the access code number of one digit is dialed, and this information is sent to the CPU8 in the same way. And the CPU8 designates via the decoder circuit 12 the RAM corresponding to the access number of the memory circuit 10. Then the subscriber number is pushed via the button 15, and the CPU8 stores the number into the corresponding RAM. And finally the is dialed to report the end of writing to the CPU8. For the reading out of the memory, the # of the button 15 is pushed and then the access number designating the RAM is pushed. And thus the CPU reads the subscriber number out of the designated RAM via the circuit 12 and then transmits the dial pulse to the circuit 1 via the signal converter 13 and the dial signal sending circuit 2 each.
JP11344879A 1979-09-03 1979-09-03 Key telephone system Pending JPS5637765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11344879A JPS5637765A (en) 1979-09-03 1979-09-03 Key telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11344879A JPS5637765A (en) 1979-09-03 1979-09-03 Key telephone system

Publications (1)

Publication Number Publication Date
JPS5637765A true JPS5637765A (en) 1981-04-11

Family

ID=14612480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11344879A Pending JPS5637765A (en) 1979-09-03 1979-09-03 Key telephone system

Country Status (1)

Country Link
JP (1) JPS5637765A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60136497A (en) * 1983-12-24 1985-07-19 Matsushita Electric Ind Co Ltd Telephone-set with function of direct selection of station

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5048813A (en) * 1973-09-01 1975-05-01
JPS5397309A (en) * 1977-02-07 1978-08-25 Nec Corp Abbreviated dialing system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5048813A (en) * 1973-09-01 1975-05-01
JPS5397309A (en) * 1977-02-07 1978-08-25 Nec Corp Abbreviated dialing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60136497A (en) * 1983-12-24 1985-07-19 Matsushita Electric Ind Co Ltd Telephone-set with function of direct selection of station

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