BE493792A - - Google Patents

Info

Publication number
BE493792A
BE493792A BE493792DA BE493792A BE 493792 A BE493792 A BE 493792A BE 493792D A BE493792D A BE 493792DA BE 493792 A BE493792 A BE 493792A
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 BE493792A publication Critical patent/BE493792A/xx

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
    • H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of dc signals of alternating polarity, coded pulses or impedance dialling

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
BE493792D 1949-02-09 BE493792A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL691108X 1949-02-09

Publications (1)

Publication Number Publication Date
BE493792A true BE493792A (ja)

Family

ID=19807507

Family Applications (1)

Application Number Title Priority Date Filing Date
BE493792D BE493792A (ja) 1949-02-09

Country Status (2)

Country Link
BE (1) BE493792A (ja)
GB (1) GB691108A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1018912B (de) * 1951-12-07 1957-11-07 Siemens Ag Relaiskettenschaltung zur Abzaehlung von Schaltschritten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1018912B (de) * 1951-12-07 1957-11-07 Siemens Ag Relaiskettenschaltung zur Abzaehlung von Schaltschritten

Also Published As

Publication number Publication date
GB691108A (en) 1953-05-06

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