CH437437A - Tonfrequentes Tastwahl-Verfahren - Google Patents

Tonfrequentes Tastwahl-Verfahren

Info

Publication number
CH437437A
CH437437A CH1427064A CH1427064A CH437437A CH 437437 A CH437437 A CH 437437A CH 1427064 A CH1427064 A CH 1427064A CH 1427064 A CH1427064 A CH 1427064A CH 437437 A CH437437 A CH 437437A
Authority
CH
Switzerland
Prior art keywords
tone
dialing method
touch dialing
frequency touch
frequency
Prior art date
Application number
CH1427064A
Other languages
English (en)
Inventor
Oden Hoeckley
Original Assignee
Standard Telephon & Radio Ag
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
Application filed by Standard Telephon & Radio Ag filed Critical Standard Telephon & Radio Ag
Publication of CH437437A publication Critical patent/CH437437A/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
    • H04Q1/4535—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted with an additional signal transmitted for voice protection
CH1427064A 1963-11-05 1964-11-04 Tonfrequentes Tastwahl-Verfahren CH437437A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST21276A DE1192276B (de) 1963-11-05 1963-11-05 Signalverfahren fuer Tastwahl mit Tonfrequenz

Publications (1)

Publication Number Publication Date
CH437437A true CH437437A (de) 1967-06-15

Family

ID=7458930

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1427064A CH437437A (de) 1963-11-05 1964-11-04 Tonfrequentes Tastwahl-Verfahren

Country Status (5)

Country Link
CH (1) CH437437A (de)
DE (1) DE1192276B (de)
GB (1) GB1049476A (de)
NL (1) NL6412743A (de)
SE (1) SE300837B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1537837B1 (de) * 1967-09-28 1970-11-12 Siemens Ag Schaltungsanordnung fuer frequenzselektive Waehlkennzeichenempfaenger in Fernmelde-,insbesondere Fernsprechanlagen

Also Published As

Publication number Publication date
NL6412743A (de) 1965-05-06
SE300837B (de) 1968-05-13
DE1192276B (de) 1965-05-06
GB1049476A (en) 1966-11-30

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