JPS6425646A - Remote supervisory system - Google Patents

Remote supervisory system

Info

Publication number
JPS6425646A
JPS6425646A JP18118487A JP18118487A JPS6425646A JP S6425646 A JPS6425646 A JP S6425646A JP 18118487 A JP18118487 A JP 18118487A JP 18118487 A JP18118487 A JP 18118487A JP S6425646 A JPS6425646 A JP S6425646A
Authority
JP
Japan
Prior art keywords
signal
wire
circuit
subscriber line
given
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
JP18118487A
Other languages
Japanese (ja)
Inventor
Akira Arutaki
Hiromi Takahashi
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
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 filed Critical NEC Corp
Priority to JP18118487A priority Critical patent/JPS6425646A/en
Publication of JPS6425646A publication Critical patent/JPS6425646A/en
Pending legal-status Critical Current

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  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To supervise a signal on a 2-wire subscriber line equivalently by supervising an incoming or outgoing signal passing through a time division exchange and supervising a digital signal on a 2-wire subscriber line to be supervised remotely. CONSTITUTION:A digital signal sent from a subscriber network terminator 3 on the 2-wire digital subscriber line 2 to a 2/4-wire conversion circuit 4 is outputted from the circuit 4 and inputted to a demultiplex circuit 5. After a 2B+D signal is separated into B1, B2 and D signals, they are given to a time division switch 1. The D signal is inputted to a D-channel protocol termination circuit and the call processing signal on the D signal is given to a call processing controller 9. The 2B+D digital signal in the incoming direction on the 2/4-wire conversion circuit 2' is converted into a 4-wire signal by the 2/4-wire conversion circuit 4'' and given to a demultiplex circuit 5''. Thus, the signal on the 2-wire subscriber line is supervised equivalently.
JP18118487A 1987-07-22 1987-07-22 Remote supervisory system Pending JPS6425646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18118487A JPS6425646A (en) 1987-07-22 1987-07-22 Remote supervisory system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18118487A JPS6425646A (en) 1987-07-22 1987-07-22 Remote supervisory system

Publications (1)

Publication Number Publication Date
JPS6425646A true JPS6425646A (en) 1989-01-27

Family

ID=16096333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18118487A Pending JPS6425646A (en) 1987-07-22 1987-07-22 Remote supervisory system

Country Status (1)

Country Link
JP (1) JPS6425646A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212051A (en) * 1990-01-17 1991-09-17 Toshiba Corp Data error detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212051A (en) * 1990-01-17 1991-09-17 Toshiba Corp Data error detector

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