CA889970A - Coin telephone circuit for dial-tone-first service - Google Patents

Coin telephone circuit for dial-tone-first service

Info

Publication number
CA889970A
CA889970A CA889970A CA889970DA CA889970A CA 889970 A CA889970 A CA 889970A CA 889970 A CA889970 A CA 889970A CA 889970D A CA889970D A CA 889970DA CA 889970 A CA889970 A CA 889970A
Authority
CA
Canada
Prior art keywords
dial
tone
service
telephone circuit
coin telephone
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
CA889970A
Inventor
L. Edington John
L. Warnock Merville
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 CA889970A publication Critical patent/CA889970A/en
Expired legal-status Critical Current

Links

CA889970A Coin telephone circuit for dial-tone-first service Expired CA889970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA889970T

Publications (1)

Publication Number Publication Date
CA889970A true CA889970A (en) 1972-01-04

Family

ID=36396136

Family Applications (1)

Application Number Title Priority Date Filing Date
CA889970A Expired CA889970A (en) Coin telephone circuit for dial-tone-first service

Country Status (1)

Country Link
CA (1) CA889970A (en)

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