JPS6212217A - 光通信方式 - Google Patents

光通信方式

Info

Publication number
JPS6212217A
JPS6212217A JP60150294A JP15029485A JPS6212217A JP S6212217 A JPS6212217 A JP S6212217A JP 60150294 A JP60150294 A JP 60150294A JP 15029485 A JP15029485 A JP 15029485A JP S6212217 A JPS6212217 A JP S6212217A
Authority
JP
Japan
Prior art keywords
line
deterioration
semiconductor laser
optical communication
optical
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.)
Granted
Application number
JP60150294A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0528927B2 (enrdf_load_stackoverflow
Inventor
Hiroyuki Fujita
浩之 藤田
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP60150294A priority Critical patent/JPS6212217A/ja
Publication of JPS6212217A publication Critical patent/JPS6212217A/ja
Publication of JPH0528927B2 publication Critical patent/JPH0528927B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Communication System (AREA)
JP60150294A 1985-07-10 1985-07-10 光通信方式 Granted JPS6212217A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60150294A JPS6212217A (ja) 1985-07-10 1985-07-10 光通信方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60150294A JPS6212217A (ja) 1985-07-10 1985-07-10 光通信方式

Publications (2)

Publication Number Publication Date
JPS6212217A true JPS6212217A (ja) 1987-01-21
JPH0528927B2 JPH0528927B2 (enrdf_load_stackoverflow) 1993-04-27

Family

ID=15493849

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60150294A Granted JPS6212217A (ja) 1985-07-10 1985-07-10 光通信方式

Country Status (1)

Country Link
JP (1) JPS6212217A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5086348A (en) * 1988-12-06 1992-02-04 Alcatel Cit System for connecting optical lines to a wideband telecommunications exchange
JPH07177151A (ja) * 1993-12-20 1995-07-14 Nec Corp Ａｔｍ交換装置
JPH10126340A (ja) * 1996-10-16 1998-05-15 Nec Corp 伝送路切替方法およびその方式

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5086348A (en) * 1988-12-06 1992-02-04 Alcatel Cit System for connecting optical lines to a wideband telecommunications exchange
JPH07177151A (ja) * 1993-12-20 1995-07-14 Nec Corp Ａｔｍ交換装置
JPH10126340A (ja) * 1996-10-16 1998-05-15 Nec Corp 伝送路切替方法およびその方式

Also Published As

Publication number Publication date
JPH0528927B2 (enrdf_load_stackoverflow) 1993-04-27

Similar Documents

Publication Publication Date Title
EP0163311A2 (en) Hot standby communications system
US5551056A (en) Method for securing the operation of a telecommunications network in a cellular radio system and a base station arrangement
CA2069665C (en) Apparatus for detecting short-circuit for use in bi-polar d.c. transmission system
US5594581A (en) Low loss optical transmission/monitoring path selection in redundant equipment terminals
JPS6212217A (ja) 光通信方式
KR100243661B1 (ko) 1+1 보호절체된 동기식 광전송 시스템의 광중계기에서의 광출력 신호 자동차단방법
JPS6239921A (ja) 回線切換装置
KR100333954B1 (ko) 단일코어를 이용한 광통신망 이중화와 고장감시방법 및 그장치
JPS62260433A (ja) 装置間光伝送方式
JPH03216030A (ja) 光伝送方式
US20030189897A1 (en) Dual line monitoring of 1‘protection with auto-switch
JPS6212216A (ja) 光通信方式
JP3326760B2 (ja) 光伝送路の監視方法及び監視システム
JPS58168342A (ja) 光中継器の光源冗長方式
JPS6141182B2 (enrdf_load_stackoverflow)
JPH04192941A (ja) Ｌａｎ通信方式
JPS6033764A (ja) 中継器監視方式
JPS60141030A (ja) 海底ケ−ブル通信システムの自動切替装置
KR100630066B1 (ko) 전송 시스템에서 선로감시를 통한 메시지 전달 방법
JPS60106233A (ja) 伝送路切替装置
JPS6357971B2 (enrdf_load_stackoverflow)
JPH0354906B2 (enrdf_load_stackoverflow)
JPH03226024A (ja) 予備回線アラーム検出方式
JPH06332814A (ja) 伝送路切り替え方式
Erlund An Automatic Protection System for Digital Lines