CA709038A - Telephone signalling circuits - Google Patents

Telephone signalling circuits

Info

Publication number
CA709038A
CA709038A CA709038A CA709038DA CA709038A CA 709038 A CA709038 A CA 709038A CA 709038 A CA709038 A CA 709038A CA 709038D A CA709038D A CA 709038DA CA 709038 A CA709038 A CA 709038A
Authority
CA
Canada
Prior art keywords
signalling circuits
telephone signalling
telephone
circuits
signalling
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
CA709038A
Inventor
H. Lanham Edward
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
Northern Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA709038A publication Critical patent/CA709038A/en
Expired legal-status Critical Current

Links

CA709038A Telephone signalling circuits Expired CA709038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA709038T

Publications (1)

Publication Number Publication Date
CA709038A true CA709038A (en) 1965-05-04

Family

ID=36038310

Family Applications (1)

Application Number Title Priority Date Filing Date
CA709038A Expired CA709038A (en) Telephone signalling circuits

Country Status (1)

Country Link
CA (1) CA709038A (en)

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