BE514276A - - Google Patents

Info

Publication number
BE514276A
BE514276A BE514276DA BE514276A BE 514276 A BE514276 A BE 514276A BE 514276D A BE514276D A BE 514276DA BE 514276 A BE514276 A BE 514276A
Authority
BE
Belgium
Application number
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.)
Publication of BE514276A publication Critical patent/BE514276A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/738Interface circuits for coupling substations to external telephone lines
    • H04M1/74Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/26Devices for calling a subscriber
    • H04M1/30Devices which can set up and transmit only one digit at a time
    • H04M1/31Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
BE514276D 1951-10-03 BE514276A (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES25033A DE880152C (de) 1951-10-03 1951-10-03 Schaltungsanordnung fuer Fernsprechstationen

Publications (1)

Publication Number Publication Date
BE514276A true BE514276A (en:Method)

Family

ID=7478147

Family Applications (1)

Application Number Title Priority Date Filing Date
BE514276D BE514276A (en:Method) 1951-10-03

Country Status (2)

Country Link
BE (1) BE514276A (en:Method)
DE (1) DE880152C (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1042668B (de) * 1955-02-17 1958-11-06 Ericsson Telefon Ab L M Schaltungsanordnung fuer mit Nummernstromstossgebern versehene Fernsprechapparate
CH345922A (de) * 1957-01-03 1960-04-30 Siemens Ag Albis Telephonteilnehmerstation mit Rückhördämpfung für automatischen Betrieb

Also Published As

Publication number Publication date
DE880152C (de) 1953-06-18

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