JPS5386102A - Selective exchange system - Google Patents

Selective exchange system

Info

Publication number
JPS5386102A
JPS5386102A JP99977A JP99977A JPS5386102A JP S5386102 A JPS5386102 A JP S5386102A JP 99977 A JP99977 A JP 99977A JP 99977 A JP99977 A JP 99977A JP S5386102 A JPS5386102 A JP S5386102A
Authority
JP
Japan
Prior art keywords
exchange system
selective exchange
selective
subscriber
call
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
JP99977A
Other languages
Japanese (ja)
Inventor
Shinichi Murakami
Kingo Yamagishi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP99977A priority Critical patent/JPS5386102A/en
Publication of JPS5386102A publication Critical patent/JPS5386102A/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
    • H04M3/436—Arrangements for screening incoming calls, i.e. evaluating the characteristics of a call before deciding whether to answer it

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To improve the service for the subscriber by securing the calling operation only for the call the subscriber wants.
JP99977A 1977-01-07 1977-01-07 Selective exchange system Pending JPS5386102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP99977A JPS5386102A (en) 1977-01-07 1977-01-07 Selective exchange system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP99977A JPS5386102A (en) 1977-01-07 1977-01-07 Selective exchange system

Publications (1)

Publication Number Publication Date
JPS5386102A true JPS5386102A (en) 1978-07-29

Family

ID=11489278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP99977A Pending JPS5386102A (en) 1977-01-07 1977-01-07 Selective exchange system

Country Status (1)

Country Link
JP (1) JPS5386102A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6211356A (en) * 1985-07-09 1987-01-20 Fujitsu Ltd Telephone message transmission control system
JPS6243955A (en) * 1985-08-22 1987-02-25 Fujitsu Ltd Telephone automatic response system
JPS6253059A (en) * 1985-09-02 1987-03-07 Nec Corp Incoming rejection system
JPS63156467A (en) * 1986-12-19 1988-06-29 Sanyo Electric Co Ltd Private branch exchange
JPS647795A (en) * 1987-06-30 1989-01-11 Canon Kk Communication control system
JPH04156096A (en) * 1990-10-19 1992-05-28 Canon Inc Private branch exchange

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4974409A (en) * 1972-11-17 1974-07-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4974409A (en) * 1972-11-17 1974-07-18

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6211356A (en) * 1985-07-09 1987-01-20 Fujitsu Ltd Telephone message transmission control system
JPS6243955A (en) * 1985-08-22 1987-02-25 Fujitsu Ltd Telephone automatic response system
JPS6253059A (en) * 1985-09-02 1987-03-07 Nec Corp Incoming rejection system
JPH0626386B2 (en) * 1985-09-02 1994-04-06 日本電気株式会社 Call rejection method
JPS63156467A (en) * 1986-12-19 1988-06-29 Sanyo Electric Co Ltd Private branch exchange
JPH0666833B2 (en) * 1986-12-19 1994-08-24 三洋電機株式会社 Private branch exchange
JPS647795A (en) * 1987-06-30 1989-01-11 Canon Kk Communication control system
JPH04156096A (en) * 1990-10-19 1992-05-28 Canon Inc Private branch exchange

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