FR2227696B1 - - Google Patents

Info

Publication number
FR2227696B1
FR2227696B1 FR7414974A FR7414974A FR2227696B1 FR 2227696 B1 FR2227696 B1 FR 2227696B1 FR 7414974 A FR7414974 A FR 7414974A FR 7414974 A FR7414974 A FR 7414974A FR 2227696 B1 FR2227696 B1 FR 2227696B1
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
FR7414974A
Other languages
French (fr)
Other versions
FR2227696A1 (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.)
Deutsche Fernsprecher GmbH
Original Assignee
Deutsche Fernsprecher GmbH
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
Priority claimed from DE19732321794 external-priority patent/DE2321794B2/en
Priority claimed from DE19732321897 external-priority patent/DE2321897C3/en
Application filed by Deutsche Fernsprecher GmbH filed Critical Deutsche Fernsprecher GmbH
Publication of FR2227696A1 publication Critical patent/FR2227696A1/fr
Application granted granted Critical
Publication of FR2227696B1 publication Critical patent/FR2227696B1/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
    • H04M1/31—Devices 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
    • H04M1/312—Devices 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 pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR7414974A 1973-04-30 1974-04-30 Expired FR2227696B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19732321794 DE2321794B2 (en) 1973-04-30 1973-04-30 Touch-dial number switch for telephone subscriber sets
DE19732321897 DE2321897C3 (en) 1973-04-30 Circuit arrangement for deriving a small DC voltage occurring as a voltage drop in a current-carrying loop

Publications (2)

Publication Number Publication Date
FR2227696A1 FR2227696A1 (en) 1974-11-22
FR2227696B1 true FR2227696B1 (en) 1980-08-29

Family

ID=25765065

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7414974A Expired FR2227696B1 (en) 1973-04-30 1974-04-30

Country Status (4)

Country Link
AT (1) AT339382B (en)
FR (1) FR2227696B1 (en)
IT (1) IT1011800B (en)
NL (1) NL7405798A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7608076L (en) * 1975-07-25 1977-01-26 Carlo Baldoni TEN NUMBER PROVIDED, DIGITAL NUMBER RECEIVER OF KEY TYPE

Also Published As

Publication number Publication date
IT1011800B (en) 1977-02-10
NL7405798A (en) 1974-11-01
ATA341974A (en) 1977-02-15
AT339382B (en) 1977-10-10
FR2227696A1 (en) 1974-11-22

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Legal Events

Date Code Title Description
ST Notification of lapse