JPS5724155A - Monitor system for call handled by attendant board - Google Patents

Monitor system for call handled by attendant board

Info

Publication number
JPS5724155A
JPS5724155A JP9859280A JP9859280A JPS5724155A JP S5724155 A JPS5724155 A JP S5724155A JP 9859280 A JP9859280 A JP 9859280A JP 9859280 A JP9859280 A JP 9859280A JP S5724155 A JPS5724155 A JP S5724155A
Authority
JP
Japan
Prior art keywords
operator
attendant board
stn
calls
main trunk
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
JP9859280A
Other languages
Japanese (ja)
Other versions
JPS6053978B2 (en
Inventor
Hideji Takagi
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 JP9859280A priority Critical patent/JPS6053978B2/en
Publication of JPS5724155A publication Critical patent/JPS5724155A/en
Publication of JPS6053978B2 publication Critical patent/JPS6053978B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator

Abstract

PURPOSE:To monitor the calls handled already for the operator of an attendant board during handling of other calls, by connecting one of two channels to an operator circuit directly and another of them to it via a capacitor. CONSTITUTION:The operator of an attendant board ATT catches a main trunk COT-A and makes dial operation to call out a public subscriber STN-A. Thus, the operator of the attendant board monitors monitors the state of the subscriber STN-A with the path of receiver R-channel LA-COTA-STNA. On the other hand, the operator of the attendant board operates the key of the ATT when other calls such as response to the incoming call from the main trunk COT-B take place, and changes the connection of the main trunk COT-A to the channel LB via a link l2. By these controls, the operator can monitor the state of the STN-A continuously.
JP9859280A 1980-07-18 1980-07-18 Central line relay stand handling call monitoring system Expired JPS6053978B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9859280A JPS6053978B2 (en) 1980-07-18 1980-07-18 Central line relay stand handling call monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9859280A JPS6053978B2 (en) 1980-07-18 1980-07-18 Central line relay stand handling call monitoring system

Publications (2)

Publication Number Publication Date
JPS5724155A true JPS5724155A (en) 1982-02-08
JPS6053978B2 JPS6053978B2 (en) 1985-11-28

Family

ID=14223904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9859280A Expired JPS6053978B2 (en) 1980-07-18 1980-07-18 Central line relay stand handling call monitoring system

Country Status (1)

Country Link
JP (1) JPS6053978B2 (en)

Also Published As

Publication number Publication date
JPS6053978B2 (en) 1985-11-28

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