DE2109909A1 - - Google Patents

Info

Publication number
DE2109909A1
DE2109909A1 DE19712109909 DE2109909A DE2109909A1 DE 2109909 A1 DE2109909 A1 DE 2109909A1 DE 19712109909 DE19712109909 DE 19712109909 DE 2109909 A DE2109909 A DE 2109909A DE 2109909 A1 DE2109909 A1 DE 2109909A1
Authority
DE
Germany
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.)
Granted
Application number
DE19712109909
Other languages
German (de)
Other versions
DE2109909B2 (de
DE2109909C (de
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 filed Critical
Priority claimed from DE19712109909 external-priority patent/DE2109909C/de
Priority to DE19712109909 priority Critical patent/DE2109909C/de
Priority to CH167372A priority patent/CH537133A/de
Priority to AT131172A priority patent/AT323813B/de
Priority to NL7202120A priority patent/NL7202120A/xx
Priority to FR7206777A priority patent/FR2127852A5/fr
Priority to LU64863D priority patent/LU64863A1/xx
Priority to IT2124072A priority patent/IT949746B/it
Priority to GB945972A priority patent/GB1315927A/en
Priority to BE780132A priority patent/BE780132A/xx
Priority to SE266472A priority patent/SE369019B/xx
Publication of DE2109909A1 publication Critical patent/DE2109909A1/de
Publication of DE2109909B2 publication Critical patent/DE2109909B2/de
Publication of DE2109909C publication Critical patent/DE2109909C/de
Application granted granted Critical
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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Time-Division Multiplex Systems (AREA)
DE19712109909 1971-03-02 1971-03-02 Digitales Tastwahlsystem für mit Deltamodulation arbeitende Fernsprech-Teilnehmerstellen Expired DE2109909C (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE19712109909 DE2109909C (de) 1971-03-02 Digitales Tastwahlsystem für mit Deltamodulation arbeitende Fernsprech-Teilnehmerstellen
CH167372A CH537133A (de) 1971-03-02 1972-02-04 Digitale Tastwahleinrichtung für mit Deltamodulation arbeitende Fernsprech-Teilnehmerstellen
AT131172A AT323813B (de) 1971-03-02 1972-02-17 Digitales tastwahlsystem für mit deltamodulation arbeitende fernsprech-teilnehmerstellen
NL7202120A NL7202120A (enExample) 1971-03-02 1972-02-17
FR7206777A FR2127852A5 (enExample) 1971-03-02 1972-02-29
LU64863D LU64863A1 (enExample) 1971-03-02 1972-02-29
IT2124072A IT949746B (it) 1971-03-02 1972-03-01 Sistema di selezione digitale a tastiera per apparecchi telefoni ci di utente che lavorano con modulazione a delta
GB945972A GB1315927A (en) 1971-03-02 1972-03-01 Telephone systems
BE780132A BE780132A (fr) 1971-03-02 1972-03-02 Selecteur digital a clavier pour des postes d'abonnes telephoniques fonctionnant suivant le principe de la modulation delta
SE266472A SE369019B (enExample) 1971-03-02 1972-03-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712109909 DE2109909C (de) 1971-03-02 Digitales Tastwahlsystem für mit Deltamodulation arbeitende Fernsprech-Teilnehmerstellen

Publications (3)

Publication Number Publication Date
DE2109909A1 true DE2109909A1 (enExample) 1972-08-24
DE2109909B2 DE2109909B2 (de) 1972-08-24
DE2109909C DE2109909C (de) 1973-03-22

Family

ID=

Also Published As

Publication number Publication date
CH537133A (de) 1973-05-15
DE2109909B2 (de) 1972-08-24
GB1315927A (en) 1973-05-09
AT323813B (de) 1975-07-25
SE369019B (enExample) 1974-07-29
LU64863A1 (enExample) 1972-07-05
FR2127852A5 (enExample) 1972-10-13
BE780132A (fr) 1972-09-04
IT949746B (it) 1973-06-11
NL7202120A (enExample) 1972-09-05

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee