JPS56140749A - Call protecting system - Google Patents

Call protecting system

Info

Publication number
JPS56140749A
JPS56140749A JP4418880A JP4418880A JPS56140749A JP S56140749 A JPS56140749 A JP S56140749A JP 4418880 A JP4418880 A JP 4418880A JP 4418880 A JP4418880 A JP 4418880A JP S56140749 A JPS56140749 A JP S56140749A
Authority
JP
Japan
Prior art keywords
subscriber
interruption
call
ccb1
stored
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.)
Granted
Application number
JP4418880A
Other languages
Japanese (ja)
Other versions
JPS6317268B2 (en
Inventor
Jun Shimada
Eiji Katayama
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4418880A priority Critical patent/JPS56140749A/en
Publication of JPS56140749A publication Critical patent/JPS56140749A/en
Publication of JPS6317268B2 publication Critical patent/JPS6317268B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/20—Automatic or semi-automatic exchanges with means for interrupting existing connections; with means for breaking-in on conversations

Landscapes

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

Abstract

PURPOSE:To secure an assured protection for the communication requiring an inhibition for interruption, by registering the interruption blocking information in correspondence to each call and through the extension subscriber who is setting the call. CONSTITUTION:When the extension subscriber A registers the interruption blocking information, the central controller CC stores the logic 1 into the interruption control part CAB of the call information block CCB within the main memory device MM. The storing address CCB1 is stored in the correspondence part to the subscriber A of the call memory part CM. The subscriber A dials the number of the extension subscriber B to start a communication. At the same time, the address CCB1 is stored in the correspondence part to the subscriber B of the part CM. When a call is given to the subscriber A under communication with an interruption request given by the attendant board ATT, the controller CC refers to the part CM to read the address CCB1 in the block CCB. Based on this, the fact that the logic 1 is stored in the part CAB is known. Then a display indicating an incapability of interruption is transmitted to the attendant board.
JP4418880A 1980-04-04 1980-04-04 Call protecting system Granted JPS56140749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4418880A JPS56140749A (en) 1980-04-04 1980-04-04 Call protecting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4418880A JPS56140749A (en) 1980-04-04 1980-04-04 Call protecting system

Publications (2)

Publication Number Publication Date
JPS56140749A true JPS56140749A (en) 1981-11-04
JPS6317268B2 JPS6317268B2 (en) 1988-04-13

Family

ID=12684590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4418880A Granted JPS56140749A (en) 1980-04-04 1980-04-04 Call protecting system

Country Status (1)

Country Link
JP (1) JPS56140749A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5787658A (en) * 1980-11-20 1982-06-01 Nec Corp Interrupting connection restricting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5787658A (en) * 1980-11-20 1982-06-01 Nec Corp Interrupting connection restricting system
JPS6355266B2 (en) * 1980-11-20 1988-11-01 Nippon Electric Co

Also Published As

Publication number Publication date
JPS6317268B2 (en) 1988-04-13

Similar Documents

Publication Publication Date Title
JPS6477353A (en) Land mobile telephone system
JPS5725763A (en) Control system of communication terminal device
JPS56140749A (en) Call protecting system
JPS5552665A (en) Incoming regulation system
JPS5753176A (en) Call system for patrolling guard
JPS5739690A (en) Incoming call distribution control system
JPS5787662A (en) Transmission restricting system
JPS5776964A (en) Designated time connecting system
JPS5599868A (en) Automatic dial unit
JPS5650643A (en) Connection system for mobile radio telephone
JPS5735494A (en) Control system for subscriber data
JPS5690662A (en) Extension calling system of key telephone set
JPS5660125A (en) Limitation system for user of mobile body communication
JPS574645A (en) Absence transfer registering system
JPS55150648A (en) Called subscriber calling system in automatic telephone exchange
JPS522311A (en) Third-person levied system
JPS5661883A (en) Originating ground control release system
JPS5752257A (en) Calling control system
JPS57111720A (en) System for data protection of data transfer control
JPS53129506A (en) Store-and-forward-converting communication system
JPS54143006A (en) Reporting system for registering release miss of incoming service
JPS5737964A (en) Controlling system for digital pad
JPS53112004A (en) Prevention system for ineffective operation of common control unit due to short circuit of grounding in error on subscriber's line
JPS57119552A (en) Incoming-side charging system
JPS5643839A (en) Outgoing control system of mobile telephone