JPS62208746A - 誤切替防止方式 - Google Patents

誤切替防止方式

Info

Publication number
JPS62208746A
JPS62208746A JP61032188A JP3218886A JPS62208746A JP S62208746 A JPS62208746 A JP S62208746A JP 61032188 A JP61032188 A JP 61032188A JP 3218886 A JP3218886 A JP 3218886A JP S62208746 A JPS62208746 A JP S62208746A
Authority
JP
Japan
Prior art keywords
tone
line
lines
backup device
switched
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
JP61032188A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0531983B2 (cs
Inventor
Hiroya Tanaka
田中　泰也
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 JP61032188A priority Critical patent/JPS62208746A/ja
Publication of JPS62208746A publication Critical patent/JPS62208746A/ja
Publication of JPH0531983B2 publication Critical patent/JPH0531983B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Maintenance And Management Of Digital Transmission (AREA)
JP61032188A 1986-02-17 1986-02-17 誤切替防止方式 Granted JPS62208746A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61032188A JPS62208746A (ja) 1986-02-17 1986-02-17 誤切替防止方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61032188A JPS62208746A (ja) 1986-02-17 1986-02-17 誤切替防止方式

Publications (2)

Publication Number Publication Date
JPS62208746A true JPS62208746A (ja) 1987-09-14
JPH0531983B2 JPH0531983B2 (cs) 1993-05-13

Family

ID=12351930

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61032188A Granted JPS62208746A (ja) 1986-02-17 1986-02-17 誤切替防止方式

Country Status (1)

Country Link
JP (1) JPS62208746A (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4910763A (en) * 1987-03-15 1990-03-20 International Business Machines Corp. Switching device for connecting a data transmission system to the telephone switched network
JPH05504665A (ja) * 1990-01-04 1993-07-15 コーデックス・コーポレイション モデムのための自動データ回復
EP0936750A3 (en) * 1998-02-10 2002-03-20 Fujikura Ltd. Communication line

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046650A (ja) * 1983-08-24 1985-03-13 Nec Corp 通信回線制御方式
JPS60150347A (ja) * 1984-01-18 1985-08-08 Nec Corp デ−タ回線バツクアツプ装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046650A (ja) * 1983-08-24 1985-03-13 Nec Corp 通信回線制御方式
JPS60150347A (ja) * 1984-01-18 1985-08-08 Nec Corp デ−タ回線バツクアツプ装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4910763A (en) * 1987-03-15 1990-03-20 International Business Machines Corp. Switching device for connecting a data transmission system to the telephone switched network
JPH05504665A (ja) * 1990-01-04 1993-07-15 コーデックス・コーポレイション モデムのための自動データ回復
EP0936750A3 (en) * 1998-02-10 2002-03-20 Fujikura Ltd. Communication line

Also Published As

Publication number Publication date
JPH0531983B2 (cs) 1993-05-13

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees