CH444242A - Mehrfachfrequenz-Signalanlage - Google Patents

Mehrfachfrequenz-Signalanlage

Info

Publication number
CH444242A
CH444242A CH1155664A CH1155664A CH444242A CH 444242 A CH444242 A CH 444242A CH 1155664 A CH1155664 A CH 1155664A CH 1155664 A CH1155664 A CH 1155664A CH 444242 A CH444242 A CH 444242A
Authority
CH
Switzerland
Prior art keywords
frequency signal
multiple frequency
signal system
signal
frequency
Prior art date
Application number
CH1155664A
Other languages
English (en)
Inventor
Benedikt Thyssens Guid Josepha
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 CH444242A publication Critical patent/CH444242A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
CH1155664A 1963-09-09 1964-09-04 Mehrfachfrequenz-Signalanlage CH444242A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL297624A NL141746B (nl) 1963-09-09 1963-09-09 Multifrequent signaleringsstelsel.

Publications (1)

Publication Number Publication Date
CH444242A true CH444242A (de) 1967-09-30

Family

ID=19755024

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1155664A CH444242A (de) 1963-09-09 1964-09-04 Mehrfachfrequenz-Signalanlage

Country Status (6)

Country Link
BE (1) BE646658A (de)
BR (1) BR6462449D0 (de)
CH (1) CH444242A (de)
DE (1) DE1232212B (de)
GB (1) GB1071526A (de)
NL (2) NL141746B (de)

Also Published As

Publication number Publication date
BR6462449D0 (pt) 1973-09-18
NL297624A (de)
NL141746B (nl) 1974-03-15
DE1232212B (de) 1967-01-12
BE646658A (de) 1964-10-19
GB1071526A (en) 1967-06-07

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