JPS5216103A - Automatic response unit - Google Patents

Automatic response unit

Info

Publication number
JPS5216103A
JPS5216103A JP9225675A JP9225675A JPS5216103A JP S5216103 A JPS5216103 A JP S5216103A JP 9225675 A JP9225675 A JP 9225675A JP 9225675 A JP9225675 A JP 9225675A JP S5216103 A JPS5216103 A JP S5216103A
Authority
JP
Japan
Prior art keywords
automatic response
response unit
security
retrictively
respond
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
JP9225675A
Other languages
Japanese (ja)
Inventor
Yukio Murata
Hiroshi Kadonaga
Sadanori Matsuda
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 JP9225675A priority Critical patent/JPS5216103A/en
Publication of JPS5216103A publication Critical patent/JPS5216103A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/06—Answer-back mechanisms or circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:In a security data communication unit, etc., to respond retrictively to a call signal from a specific subscriber such as security centers by controlling the automatic response operations using control signals from a private line.
JP9225675A 1975-07-29 1975-07-29 Automatic response unit Pending JPS5216103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9225675A JPS5216103A (en) 1975-07-29 1975-07-29 Automatic response unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9225675A JPS5216103A (en) 1975-07-29 1975-07-29 Automatic response unit

Publications (1)

Publication Number Publication Date
JPS5216103A true JPS5216103A (en) 1977-02-07

Family

ID=14049329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9225675A Pending JPS5216103A (en) 1975-07-29 1975-07-29 Automatic response unit

Country Status (1)

Country Link
JP (1) JPS5216103A (en)

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