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JPS5274211A - Rotary monitor switching system in digital wireless line - Google Patents

Rotary monitor switching system in digital wireless line

Info

Publication number
JPS5274211A
JPS5274211A JP15043275A JP15043275A JPS5274211A JP S5274211 A JPS5274211 A JP S5274211A JP 15043275 A JP15043275 A JP 15043275A JP 15043275 A JP15043275 A JP 15043275A JP S5274211 A JPS5274211 A JP S5274211A
Authority
JP
Japan
Prior art keywords
switching system
wireless line
digital wireless
monitor switching
rotary monitor
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
JP15043275A
Other languages
Japanese (ja)
Inventor
Toshihiko Mitani
Akira Hosoda
Yuji Sugita
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
Nippon Telegraph and Telephone Corp
Original Assignee
NEC Corp
Nippon Telegraph and Telephone 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 Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15043275A priority Critical patent/JPS5274211A/en
Publication of JPS5274211A publication Critical patent/JPS5274211A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)

Abstract

PURPOSE:To constitute a system having high reliability, by providing a spare line to a plural number of existing lines, and by monitoring economicall over broader range, without losing the independence of the switching area.
JP15043275A 1975-12-17 1975-12-17 Rotary monitor switching system in digital wireless line Pending JPS5274211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15043275A JPS5274211A (en) 1975-12-17 1975-12-17 Rotary monitor switching system in digital wireless line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15043275A JPS5274211A (en) 1975-12-17 1975-12-17 Rotary monitor switching system in digital wireless line

Publications (1)

Publication Number Publication Date
JPS5274211A true JPS5274211A (en) 1977-06-22

Family

ID=15496786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15043275A Pending JPS5274211A (en) 1975-12-17 1975-12-17 Rotary monitor switching system in digital wireless line

Country Status (1)

Country Link
JP (1) JPS5274211A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993014574A1 (en) * 1992-01-10 1993-07-22 Fujitsu Limited Optical transmission system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993014574A1 (en) * 1992-01-10 1993-07-22 Fujitsu Limited Optical transmission system
US5457555A (en) * 1992-01-10 1995-10-10 Fujitsu Limited Optical transmission system

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