CA791234A - Automatic monitoring circuit for step-by-step telephone systems - Google Patents

Automatic monitoring circuit for step-by-step telephone systems

Info

Publication number
CA791234A
CA791234A CA791234A CA791234DA CA791234A CA 791234 A CA791234 A CA 791234A CA 791234 A CA791234 A CA 791234A CA 791234D A CA791234D A CA 791234DA CA 791234 A CA791234 A CA 791234A
Authority
CA
Canada
Prior art keywords
monitoring circuit
automatic monitoring
telephone systems
systems
automatic
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
CA791234A
Inventor
G. Haenschke Detlev
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA791234A publication Critical patent/CA791234A/en
Expired legal-status Critical Current

Links

CA791234A Automatic monitoring circuit for step-by-step telephone systems Expired CA791234A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA791234T

Publications (1)

Publication Number Publication Date
CA791234A true CA791234A (en) 1968-07-30

Family

ID=36255215

Family Applications (1)

Application Number Title Priority Date Filing Date
CA791234A Expired CA791234A (en) Automatic monitoring circuit for step-by-step telephone systems

Country Status (1)

Country Link
CA (1) CA791234A (en)

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