CA1034278A - Protection circuit for telephone switching system - Google Patents

Protection circuit for telephone switching system

Info

Publication number
CA1034278A
CA1034278A CA246,230A CA246230A CA1034278A CA 1034278 A CA1034278 A CA 1034278A CA 246230 A CA246230 A CA 246230A CA 1034278 A CA1034278 A CA 1034278A
Authority
CA
Canada
Prior art keywords
protection circuit
switching system
telephone switching
telephone
protection
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.)
Expired
Application number
CA246,230A
Other languages
French (fr)
Inventor
Robert Lancaster
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.)
Nortel Networks Ltd
Original Assignee
Nortel Networks 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 Nortel Networks Ltd filed Critical Nortel Networks Ltd
Priority to CA246,230A priority Critical patent/CA1034278A/en
Application granted granted Critical
Publication of CA1034278A publication Critical patent/CA1034278A/en
Expired legal-status Critical Current

Links

CA246,230A 1976-02-20 1976-02-20 Protection circuit for telephone switching system Expired CA1034278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA246,230A CA1034278A (en) 1976-02-20 1976-02-20 Protection circuit for telephone switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA246,230A CA1034278A (en) 1976-02-20 1976-02-20 Protection circuit for telephone switching system

Publications (1)

Publication Number Publication Date
CA1034278A true CA1034278A (en) 1978-07-04

Family

ID=4105282

Family Applications (1)

Application Number Title Priority Date Filing Date
CA246,230A Expired CA1034278A (en) 1976-02-20 1976-02-20 Protection circuit for telephone switching system

Country Status (1)

Country Link
CA (1) CA1034278A (en)

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