CA780967A - Immediate ringing circuit for telephone systems - Google Patents

Immediate ringing circuit for telephone systems

Info

Publication number
CA780967A
CA780967A CA780967A CA780967DA CA780967A CA 780967 A CA780967 A CA 780967A CA 780967 A CA780967 A CA 780967A CA 780967D A CA780967D A CA 780967DA CA 780967 A CA780967 A CA 780967A
Authority
CA
Canada
Prior art keywords
telephone systems
ringing circuit
immediate ringing
immediate
circuit
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
CA780967A
Inventor
M. Swanson Richard
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 CA780967A publication Critical patent/CA780967A/en
Expired legal-status Critical Current

Links

CA780967A Immediate ringing circuit for telephone systems Expired CA780967A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA780967T

Publications (1)

Publication Number Publication Date
CA780967A true CA780967A (en) 1968-03-19

Family

ID=36243649

Family Applications (1)

Application Number Title Priority Date Filing Date
CA780967A Expired CA780967A (en) Immediate ringing circuit for telephone systems

Country Status (1)

Country Link
CA (1) CA780967A (en)

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