JPS6481564A - Line switching device - Google Patents

Line switching device

Info

Publication number
JPS6481564A
JPS6481564A JP62239202A JP23920287A JPS6481564A JP S6481564 A JPS6481564 A JP S6481564A JP 62239202 A JP62239202 A JP 62239202A JP 23920287 A JP23920287 A JP 23920287A JP S6481564 A JPS6481564 A JP S6481564A
Authority
JP
Japan
Prior art keywords
main body
section
line
fax main
alarm signal
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
JP62239202A
Other languages
Japanese (ja)
Inventor
Naoyuki Inoue
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 JP62239202A priority Critical patent/JPS6481564A/en
Publication of JPS6481564A publication Critical patent/JPS6481564A/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimiles In General (AREA)
  • Facsimile Transmission Control (AREA)

Abstract

PURPOSE:To early recover communication function by outputting an alarm signal when a switching section is thrown to the position of communication side and the detection section detects no line current so as to detect mis- connection or a line and a telephone set or improper contact of the line. CONSTITUTION:When a call is detected and a FAX main body section 21b starts the reception, or the transmission is started from the FAX main body 21b, the FAX main body 21b switches the changeover section 3a to the position of the communication side. When the detection section 46 detects the line current, no alarm signal is outputted. The FAX main body 21b starts the transmission/reception as the normal connection to the line 1a. When the detector 4b detects no line current, OR output of photocouplers S1, S2 is inverted by an inverter 1 to output an alarm signal. In receiving the alarm signal, the FAX main body 21b restores the changeover section 3a to the position of the telephone set and the incoming detection section 6a is disconnected to disconnect the FAX main body 21b to energize a buzzer and to apply blink display.
JP62239202A 1987-09-24 1987-09-24 Line switching device Pending JPS6481564A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62239202A JPS6481564A (en) 1987-09-24 1987-09-24 Line switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62239202A JPS6481564A (en) 1987-09-24 1987-09-24 Line switching device

Publications (1)

Publication Number Publication Date
JPS6481564A true JPS6481564A (en) 1989-03-27

Family

ID=17041249

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62239202A Pending JPS6481564A (en) 1987-09-24 1987-09-24 Line switching device

Country Status (1)

Country Link
JP (1) JPS6481564A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08214084A (en) * 1995-02-03 1996-08-20 Micro Sogo Kenkyusho:Kk Line interface device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58225767A (en) * 1982-06-24 1983-12-27 Nec Corp Facsimile communication system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58225767A (en) * 1982-06-24 1983-12-27 Nec Corp Facsimile communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08214084A (en) * 1995-02-03 1996-08-20 Micro Sogo Kenkyusho:Kk Line interface device

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