CH257252A - Device for initiating operations through telephone calls. - Google Patents

Device for initiating operations through telephone calls.

Info

Publication number
CH257252A
CH257252A CH257252DA CH257252A CH 257252 A CH257252 A CH 257252A CH 257252D A CH257252D A CH 257252DA CH 257252 A CH257252 A CH 257252A
Authority
CH
Switzerland
Prior art keywords
telephone calls
initiating operations
initiating
operations
calls
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Ipsophon Patentgesellschaft
Original Assignee
Ag Ipsophon Patentgesellschaft
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 Ag Ipsophon Patentgesellschaft filed Critical Ag Ipsophon Patentgesellschaft
Publication of CH257252A publication Critical patent/CH257252A/en

Links

Classifications

    • 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
    • H04M1/652—Means for playing back the recorded messages by remote control over a telephone line
    • 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
    • H04M1/6515—Recording arrangements for recording a message from the calling party using magnetic tape

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
CH257252D 1944-12-11 1944-12-11 Device for initiating operations through telephone calls. CH257252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2489638X 1944-12-11

Publications (1)

Publication Number Publication Date
CH257252A true CH257252A (en) 1948-09-30

Family

ID=4569601

Family Applications (1)

Application Number Title Priority Date Filing Date
CH257252D CH257252A (en) 1944-12-11 1944-12-11 Device for initiating operations through telephone calls.

Country Status (6)

Country Link
US (1) US2489638A (en)
AT (1) AT163570B (en)
BE (1) BE460890A (en)
CH (1) CH257252A (en)
FR (1) FR913552A (en)
NL (1) NL65337C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2601393A (en) * 1948-05-27 1952-06-24 Jr John Hays Hammond Selective remote control system
NL225651A (en) * 1951-05-10
NL232402A (en) * 1957-10-23

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL11285C (en) * 1920-12-20
FR543176A (en) * 1921-03-22 1922-08-29 Radio Electr Soc Fr Call selector
US1595241A (en) * 1923-11-26 1926-08-10 Robert O Nelson Automatic phonograph
US1888904A (en) * 1928-10-16 1932-11-22 Brauer Ernst Station calling device
US2072079A (en) * 1933-10-13 1937-03-02 Gen Railway Signal Co Centralized traffic controlling system for railroads
US2141551A (en) * 1936-08-01 1938-12-27 Gen Railway Signal Co Centralized traffic controlling system for railroads
US2194559A (en) * 1937-04-28 1940-03-26 Rca Corp Frequency responsive relay
US2276646A (en) * 1939-01-18 1942-03-17 Westinghouse Electric & Mfg Co Supervisory control system
US2230486A (en) * 1939-06-15 1941-02-04 Lyndon A Durant Selector mechanism
US2238976A (en) * 1940-07-29 1941-04-22 Carl F Huebotter Remote control sound record reproducing system
US2306654A (en) * 1941-05-28 1942-12-29 Rock Ola Mfg Corp Phonograph
US2368826A (en) * 1942-05-11 1945-02-06 Gen Railway Signal Co Centralized traffic controlling system for railroads
US2399738A (en) * 1944-03-29 1946-05-07 Gen Railway Signal Co Centralized traffic controlling system for railroads

Also Published As

Publication number Publication date
NL65337C (en)
BE460890A (en)
FR913552A (en) 1946-09-13
US2489638A (en) 1949-11-29
AT163570B (en) 1949-07-25

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