IT968706B - Dispositivo a circuito elettronico per disconnettere il circuito di trasmissione di un apparecchio telefonico durante una trasmissio ne in cifra - Google Patents

Dispositivo a circuito elettronico per disconnettere il circuito di trasmissione di un apparecchio telefonico durante una trasmissio ne in cifra

Info

Publication number
IT968706B
IT968706B IT3019072A IT3019072A IT968706B IT 968706 B IT968706 B IT 968706B IT 3019072 A IT3019072 A IT 3019072A IT 3019072 A IT3019072 A IT 3019072A IT 968706 B IT968706 B IT 968706B
Authority
IT
Italy
Prior art keywords
transmission
disconnecting
circuit
electronic circuit
device during
Prior art date
Application number
IT3019072A
Other languages
English (en)
Inventor
A Kjell
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of IT968706B publication Critical patent/IT968706B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
IT3019072A 1971-10-07 1972-10-06 Dispositivo a circuito elettronico per disconnettere il circuito di trasmissione di un apparecchio telefonico durante una trasmissio ne in cifra IT968706B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1266571 1971-10-07

Publications (1)

Publication Number Publication Date
IT968706B true IT968706B (it) 1974-03-20

Family

ID=20296106

Family Applications (1)

Application Number Title Priority Date Filing Date
IT3019072A IT968706B (it) 1971-10-07 1972-10-06 Dispositivo a circuito elettronico per disconnettere il circuito di trasmissione di un apparecchio telefonico durante una trasmissio ne in cifra

Country Status (3)

Country Link
CH (1) CH549318A (it)
FR (1) FR2155666A5 (it)
IT (1) IT968706B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2906579B1 (de) * 1979-02-21 1980-07-17 Licentia Gmbh Schaltungsanordnung zur Umschaltung von tonfrequenter Signalabgabe auf Sprechbetrieb und umgekehrt in Fernmeldegeraeten

Also Published As

Publication number Publication date
FR2155666A5 (it) 1973-05-18
CH549318A (de) 1974-05-15

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