CH537133A - Digitale Tastwahleinrichtung für mit Deltamodulation arbeitende Fernsprech-Teilnehmerstellen - Google Patents

Digitale Tastwahleinrichtung für mit Deltamodulation arbeitende Fernsprech-Teilnehmerstellen

Info

Publication number
CH537133A
CH537133A CH167372A CH167372A CH537133A CH 537133 A CH537133 A CH 537133A CH 167372 A CH167372 A CH 167372A CH 167372 A CH167372 A CH 167372A CH 537133 A CH537133 A CH 537133A
Authority
CH
Switzerland
Prior art keywords
subscriber stations
telephone subscriber
delta modulation
dialing device
button dialing
Prior art date
Application number
CH167372A
Other languages
German (de)
English (en)
Inventor
Karl-Anton Dipl Ing Lutz
Eberhard Dipl Ing Knorpp
Original Assignee
Siemens Ag
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 DE19712109909 external-priority patent/DE2109909C/de
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of CH537133A publication Critical patent/CH537133A/de

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)
CH167372A 1971-03-02 1972-02-04 Digitale Tastwahleinrichtung für mit Deltamodulation arbeitende Fernsprech-Teilnehmerstellen CH537133A (de)

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 (1)

Publication Number Publication Date
CH537133A true CH537133A (de) 1973-05-15

Family

ID=5800298

Family Applications (1)

Application Number Title Priority Date Filing Date
CH167372A CH537133A (de) 1971-03-02 1972-02-04 Digitale Tastwahleinrichtung für mit Deltamodulation arbeitende Fernsprech-Teilnehmerstellen

Country Status (9)

Country Link
AT (1) AT323813B (enExample)
BE (1) BE780132A (enExample)
CH (1) CH537133A (enExample)
FR (1) FR2127852A5 (enExample)
GB (1) GB1315927A (enExample)
IT (1) IT949746B (enExample)
LU (1) LU64863A1 (enExample)
NL (1) NL7202120A (enExample)
SE (1) SE369019B (enExample)

Also Published As

Publication number Publication date
DE2109909A1 (enExample) 1972-08-24
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
PL Patent ceased