CA867457A - Coin telephone circuit for dial-tone-first service - Google Patents

Coin telephone circuit for dial-tone-first service

Info

Publication number
CA867457A
CA867457A CA867457A CA867457DA CA867457A CA 867457 A CA867457 A CA 867457A CA 867457 A CA867457 A CA 867457A CA 867457D A CA867457D A CA 867457DA CA 867457 A CA867457 A CA 867457A
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
CA867457A
Inventor
L. Warnock Merville
E. Edington John
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 CA867457A publication Critical patent/CA867457A/en
Expired legal-status Critical Current

Links

CA867457A Coin telephone circuit for dial-tone-first service Expired CA867457A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA867457T

Publications (1)

Publication Number Publication Date
CA867457A true CA867457A (en) 1971-03-30

Family

ID=36352748

Family Applications (1)

Application Number Title Priority Date Filing Date
CA867457A Expired CA867457A (en) Coin telephone circuit for dial-tone-first service

Country Status (1)

Country Link
CA (1) CA867457A (en)

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