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JPS6439869A - Network control unit - Google Patents

Network control unit

Info

Publication number
JPS6439869A
JPS6439869A JP19450187A JP19450187A JPS6439869A JP S6439869 A JPS6439869 A JP S6439869A JP 19450187 A JP19450187 A JP 19450187A JP 19450187 A JP19450187 A JP 19450187A JP S6439869 A JPS6439869 A JP S6439869A
Authority
JP
Japan
Prior art keywords
signal
call signal
call
line
pattern
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
JP19450187A
Other languages
Japanese (ja)
Inventor
Motoyuki Yokoyama
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 JP19450187A priority Critical patent/JPS6439869A/en
Publication of JPS6439869A publication Critical patent/JPS6439869A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To detect plural kinds of call signals, by storing a signal pattern of the call signal in a storage means by an external input, when it is connected to various lines. CONSTITUTION:In a state that a line 12 and a network control unit 10 is connected, a call signal of a specific signal pattern used for only its circuit is sent out onto the line 12. Under this state, a control signal is outputted to a storage part 100 from a storage control part 102 based on an external set input by an operator's operation, the call signal is inputted to the storage part 100 through a call signal detecting part 104, and its signal pattern is stored. Thereafter, when the call signal is sent out onto the line 12, the call signal detecting part 104 fetches this call signal, the signal pattern of this call signal and the signal pattern of the call signal read out of the storage part 100 are compared, and when both of them have coincided, it is decided that the call signal used for this line is outputted onto the line 12. In such a way, plural kinds of call signals can be detected.
JP19450187A 1987-08-05 1987-08-05 Network control unit Pending JPS6439869A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19450187A JPS6439869A (en) 1987-08-05 1987-08-05 Network control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19450187A JPS6439869A (en) 1987-08-05 1987-08-05 Network control unit

Publications (1)

Publication Number Publication Date
JPS6439869A true JPS6439869A (en) 1989-02-10

Family

ID=16325566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19450187A Pending JPS6439869A (en) 1987-08-05 1987-08-05 Network control unit

Country Status (1)

Country Link
JP (1) JPS6439869A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0353652A (en) * 1989-07-20 1991-03-07 Misawa Homes Co Ltd Information management equipment
JPH05344189A (en) * 1992-06-12 1993-12-24 Matsushita Electric Ind Co Ltd Tone detection method
JP2002263533A (en) * 2001-03-05 2002-09-17 Nagoya Oil Chem Co Ltd Masking material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0353652A (en) * 1989-07-20 1991-03-07 Misawa Homes Co Ltd Information management equipment
JPH05344189A (en) * 1992-06-12 1993-12-24 Matsushita Electric Ind Co Ltd Tone detection method
JP2002263533A (en) * 2001-03-05 2002-09-17 Nagoya Oil Chem Co Ltd Masking material

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