JPS5821956A - 予備加入者回路切替方式 - Google Patents

予備加入者回路切替方式

Info

Publication number
JPS5821956A
JPS5821956A JP12108981A JP12108981A JPS5821956A JP S5821956 A JPS5821956 A JP S5821956A JP 12108981 A JP12108981 A JP 12108981A JP 12108981 A JP12108981 A JP 12108981A JP S5821956 A JPS5821956 A JP S5821956A
Authority
JP
Japan
Prior art keywords
subscriber
circuit
subscriber circuit
switch
subscriber terminal
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
JP12108981A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0241944B2 (enrdf_load_stackoverflow
Inventor
Haruaki Hasegawa
長谷川　晴朗
Hiroshi Sakai
博 酒井
Koji Kogure
木暮　光司
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.)
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Oki Electric Industry 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 Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP12108981A priority Critical patent/JPS5821956A/ja
Publication of JPS5821956A publication Critical patent/JPS5821956A/ja
Publication of JPH0241944B2 publication Critical patent/JPH0241944B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus
    • H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
JP12108981A 1981-08-01 1981-08-01 予備加入者回路切替方式 Granted JPS5821956A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12108981A JPS5821956A (ja) 1981-08-01 1981-08-01 予備加入者回路切替方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12108981A JPS5821956A (ja) 1981-08-01 1981-08-01 予備加入者回路切替方式

Publications (2)

Publication Number Publication Date
JPS5821956A true JPS5821956A (ja) 1983-02-09
JPH0241944B2 JPH0241944B2 (enrdf_load_stackoverflow) 1990-09-20

Family

ID=14802592

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12108981A Granted JPS5821956A (ja) 1981-08-01 1981-08-01 予備加入者回路切替方式

Country Status (1)

Country Link
JP (1) JPS5821956A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63250255A (ja) * 1987-04-06 1988-10-18 Nec Corp 障害加入者回路切替方式

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53105923A (en) * 1977-02-28 1978-09-14 Nec Corp Automatic test system for ringer
JPS55115786A (en) * 1979-02-28 1980-09-05 Fujitsu Ltd N+1 spare system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53105923A (en) * 1977-02-28 1978-09-14 Nec Corp Automatic test system for ringer
JPS55115786A (en) * 1979-02-28 1980-09-05 Fujitsu Ltd N+1 spare system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63250255A (ja) * 1987-04-06 1988-10-18 Nec Corp 障害加入者回路切替方式

Also Published As

Publication number Publication date
JPH0241944B2 (enrdf_load_stackoverflow) 1990-09-20

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