GB655937A - Arrangement for speech control of installations such as telephonographs - Google Patents

Arrangement for speech control of installations such as telephonographs

Info

Publication number
GB655937A
GB655937A GB2655/47A GB265547A GB655937A GB 655937 A GB655937 A GB 655937A GB 2655/47 A GB2655/47 A GB 2655/47A GB 265547 A GB265547 A GB 265547A GB 655937 A GB655937 A GB 655937A
Authority
GB
United Kingdom
Prior art keywords
relay
impulses
operates
jan
winding
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
GB2655/47A
Other languages
English (en)
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.)
IPSOPHON PATENTGESELLSCHAFT A
Original Assignee
IPSOPHON PATENTGESELLSCHAFT A
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 IPSOPHON PATENTGESELLSCHAFT A filed Critical IPSOPHON PATENTGESELLSCHAFT A
Publication of GB655937A publication Critical patent/GB655937A/en
Expired legal-status Critical Current

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
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H04M1/654—Telephone line monitoring circuits therefor, e.g. ring detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Meter Arrangements (AREA)
GB2655/47A 1946-01-29 1947-01-28 Arrangement for speech control of installations such as telephonographs Expired GB655937A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH655937X 1946-01-29

Publications (1)

Publication Number Publication Date
GB655937A true GB655937A (en) 1951-08-08

Family

ID=4526497

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2655/47A Expired GB655937A (en) 1946-01-29 1947-01-28 Arrangement for speech control of installations such as telephonographs

Country Status (3)

Country Link
CH (1) CH266521A (en:Method)
GB (1) GB655937A (en:Method)
NL (1) NL67819C (en:Method)

Also Published As

Publication number Publication date
NL67819C (en:Method)
CH266521A (de) 1950-01-31

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