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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (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 (cs)
GB (1) GB655937A (cs)
NL (1) NL67819C (cs)

Also Published As

Publication number Publication date
CH266521A (de) 1950-01-31
NL67819C (cs)

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