JPS53148211A - Announcement supervisory system - Google Patents

Announcement supervisory system

Info

Publication number
JPS53148211A
JPS53148211A JP12453177A JP12453177A JPS53148211A JP S53148211 A JPS53148211 A JP S53148211A JP 12453177 A JP12453177 A JP 12453177A JP 12453177 A JP12453177 A JP 12453177A JP S53148211 A JPS53148211 A JP S53148211A
Authority
JP
Japan
Prior art keywords
announcement
supervisory system
incompleteness
detect
make
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
JP12453177A
Other languages
Japanese (ja)
Inventor
Hiroshi Kosugi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12453177A priority Critical patent/JPS53148211A/en
Publication of JPS53148211A publication Critical patent/JPS53148211A/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
    • H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To make it possible to detect the incompleteness of announcement, by using a plural number of pilot tones on voice announcement.
JP12453177A 1977-10-19 1977-10-19 Announcement supervisory system Pending JPS53148211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12453177A JPS53148211A (en) 1977-10-19 1977-10-19 Announcement supervisory system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12453177A JPS53148211A (en) 1977-10-19 1977-10-19 Announcement supervisory system

Publications (1)

Publication Number Publication Date
JPS53148211A true JPS53148211A (en) 1978-12-23

Family

ID=14887772

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12453177A Pending JPS53148211A (en) 1977-10-19 1977-10-19 Announcement supervisory system

Country Status (1)

Country Link
JP (1) JPS53148211A (en)

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