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JPS52139302A - Automatic circuit switching unit - Google Patents

Automatic circuit switching unit

Info

Publication number
JPS52139302A
JPS52139302A JP5619676A JP5619676A JPS52139302A JP S52139302 A JPS52139302 A JP S52139302A JP 5619676 A JP5619676 A JP 5619676A JP 5619676 A JP5619676 A JP 5619676A JP S52139302 A JPS52139302 A JP S52139302A
Authority
JP
Japan
Prior art keywords
switching unit
circuit switching
automatic circuit
subscriber
automatic
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
JP5619676A
Other languages
Japanese (ja)
Inventor
Hitohide Yoneyama
Akira Oshima
Takeshi Nakagawa
Masataka Kuroki
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.)
JAPANESE NATIONAL RAILWAYS<JNR>
Japan National Railways
NEC Corp
Original Assignee
JAPANESE NATIONAL RAILWAYS<JNR>
Japan National Railways
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 JAPANESE NATIONAL RAILWAYS<JNR>, Japan National Railways, NEC Corp, Nippon Electric Co Ltd filed Critical JAPANESE NATIONAL RAILWAYS<JNR>
Priority to JP5619676A priority Critical patent/JPS52139302A/en
Publication of JPS52139302A publication Critical patent/JPS52139302A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Facsimiles In General (AREA)

Abstract

PURPOSE:To perform an automatic switching for the prescribed subscriber's apparatus and thus to achieve an economical use of the telephone network through transfer of the signal between the subscriber's apparatus using the general telephone circuit.
JP5619676A 1976-05-17 1976-05-17 Automatic circuit switching unit Pending JPS52139302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5619676A JPS52139302A (en) 1976-05-17 1976-05-17 Automatic circuit switching unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5619676A JPS52139302A (en) 1976-05-17 1976-05-17 Automatic circuit switching unit

Publications (1)

Publication Number Publication Date
JPS52139302A true JPS52139302A (en) 1977-11-21

Family

ID=13020350

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5619676A Pending JPS52139302A (en) 1976-05-17 1976-05-17 Automatic circuit switching unit

Country Status (1)

Country Link
JP (1) JPS52139302A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5689163A (en) * 1979-12-20 1981-07-20 Ricoh Co Ltd Telephone call system in facsimile
JPS574649A (en) * 1980-06-11 1982-01-11 Hitachi Ltd Calling system for combined circuit of data terminal and telephone terminal
JPS63148750A (en) * 1986-12-12 1988-06-21 Toshiba Corp Telephone/facsimile switching system
JPS6429052A (en) * 1987-07-24 1989-01-31 Ricoh Kk Line switcher
JPH02210942A (en) * 1989-06-16 1990-08-22 Sanyo Electric Co Ltd Telephone calling method in facsimile equipment
JPH09121260A (en) * 1996-09-09 1997-05-06 Toshiba Corp Telephone/facsimile switching system
JPH09186794A (en) * 1996-10-17 1997-07-15 Hitachi Ltd Facsimile equipment
JPH09186793A (en) * 1996-10-17 1997-07-15 Hitachi Ltd Line controller

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998503A (en) * 1973-01-22 1974-09-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998503A (en) * 1973-01-22 1974-09-18

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5689163A (en) * 1979-12-20 1981-07-20 Ricoh Co Ltd Telephone call system in facsimile
JPS5941626B2 (en) * 1979-12-20 1984-10-08 株式会社リコー Telephone calling method in facsimile
JPS574649A (en) * 1980-06-11 1982-01-11 Hitachi Ltd Calling system for combined circuit of data terminal and telephone terminal
JPS63148750A (en) * 1986-12-12 1988-06-21 Toshiba Corp Telephone/facsimile switching system
JPS6429052A (en) * 1987-07-24 1989-01-31 Ricoh Kk Line switcher
JPH02210942A (en) * 1989-06-16 1990-08-22 Sanyo Electric Co Ltd Telephone calling method in facsimile equipment
JPH0453475B2 (en) * 1989-06-16 1992-08-26 Sanyo Electric Co
JPH09121260A (en) * 1996-09-09 1997-05-06 Toshiba Corp Telephone/facsimile switching system
JPH09186794A (en) * 1996-10-17 1997-07-15 Hitachi Ltd Facsimile equipment
JPH09186793A (en) * 1996-10-17 1997-07-15 Hitachi Ltd Line controller

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