FR2155666A5 - - Google Patents

Info

Publication number
FR2155666A5
FR2155666A5 FR7235608A FR7235608A FR2155666A5 FR 2155666 A5 FR2155666 A5 FR 2155666A5 FR 7235608 A FR7235608 A FR 7235608A FR 7235608 A FR7235608 A FR 7235608A FR 2155666 A5 FR2155666 A5 FR 2155666A5
Authority
FR
France
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
FR7235608A
Other languages
French (fr)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of FR2155666A5 publication Critical patent/FR2155666A5/fr
Expired legal-status Critical Current

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)
FR7235608A 1971-10-07 1972-10-06 Expired FR2155666A5 (enExample)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
FR2155666A5 true FR2155666A5 (enExample) 1973-05-18

Family

ID=20296106

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7235608A Expired FR2155666A5 (enExample) 1971-10-07 1972-10-06

Country Status (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016950A1 (de) * 1979-02-21 1980-10-15 Licentia Patent-Verwaltungs-GmbH Schaltungsanordnung zur Umschaltung von tonfrequenter Signalabgabe auf Sprechbetrieb und umgekehrt in Fernmeldegeräten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016950A1 (de) * 1979-02-21 1980-10-15 Licentia Patent-Verwaltungs-GmbH Schaltungsanordnung zur Umschaltung von tonfrequenter Signalabgabe auf Sprechbetrieb und umgekehrt in Fernmeldegeräten

Also Published As

Publication number Publication date
IT968706B (it) 1974-03-20
CH549318A (de) 1974-05-15

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Legal Events

Date Code Title Description
ST Notification of lapse