CA1181526A - Circuit numerique et methode de detection de tonalites de progression de l'appel - Google Patents

Circuit numerique et methode de detection de tonalites de progression de l'appel

Info

Publication number
CA1181526A
CA1181526A CA000452923A CA452923A CA1181526A CA 1181526 A CA1181526 A CA 1181526A CA 000452923 A CA000452923 A CA 000452923A CA 452923 A CA452923 A CA 452923A CA 1181526 A CA1181526 A CA 1181526A
Authority
CA
Canada
Prior art keywords
signal
circuit
signals
level
tone
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
CA000452923A
Other languages
English (en)
Inventor
Ernst A. Munter
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 Telecom Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CA000396210A external-priority patent/CA1177588A/fr
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to CA000452923A priority Critical patent/CA1181526A/fr
Application granted granted Critical
Publication of CA1181526A publication Critical patent/CA1181526A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Devices For Supply Of Signal Current (AREA)
CA000452923A 1982-02-12 1984-04-26 Circuit numerique et methode de detection de tonalites de progression de l'appel Expired CA1181526A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000452923A CA1181526A (fr) 1982-02-12 1984-04-26 Circuit numerique et methode de detection de tonalites de progression de l'appel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000396210A CA1177588A (fr) 1982-02-12 1982-02-12 Circuit numerique et methode de detection de tonalites d'appel en marche pour systemes telephoniques
CA000452923A CA1181526A (fr) 1982-02-12 1984-04-26 Circuit numerique et methode de detection de tonalites de progression de l'appel

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA000396210A Division CA1177588A (fr) 1982-02-12 1982-02-12 Circuit numerique et methode de detection de tonalites d'appel en marche pour systemes telephoniques

Publications (1)

Publication Number Publication Date
CA1181526A true CA1181526A (fr) 1985-01-22

Family

ID=25669572

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000452923A Expired CA1181526A (fr) 1982-02-12 1984-04-26 Circuit numerique et methode de detection de tonalites de progression de l'appel

Country Status (1)

Country Link
CA (1) CA1181526A (fr)

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry