AT323813B - Digitales tastwahlsystem für mit deltamodulation arbeitende fernsprech-teilnehmerstellen - Google Patents

Digitales tastwahlsystem für mit deltamodulation arbeitende fernsprech-teilnehmerstellen

Info

Publication number
AT323813B
AT323813B AT131172A AT131172A AT323813B AT 323813 B AT323813 B AT 323813B AT 131172 A AT131172 A AT 131172A AT 131172 A AT131172 A AT 131172A AT 323813 B AT323813 B AT 323813B
Authority
AT
Austria
Prior art keywords
delta modulation
digital button
dialing system
telephone subscribers
button dialing
Prior art date
Application number
AT131172A
Other languages
English (en)
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
Application granted granted Critical
Publication of AT323813B publication Critical patent/AT323813B/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)
AT131172A 1971-03-02 1972-02-17 Digitales tastwahlsystem für mit deltamodulation arbeitende fernsprech-teilnehmerstellen AT323813B (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
AT323813B true AT323813B (de) 1975-07-25

Family

ID=5800298

Family Applications (1)

Application Number Title Priority Date Filing Date
AT131172A AT323813B (de) 1971-03-02 1972-02-17 Digitales tastwahlsystem für mit deltamodulation arbeitende fernsprech-teilnehmerstellen

Country Status (9)

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

Also Published As

Publication number Publication date
SE369019B (de) 1974-07-29
NL7202120A (de) 1972-09-05
LU64863A1 (de) 1972-07-05
DE2109909B2 (de) 1972-08-24
DE2109909A1 (de) 1972-08-24
IT949746B (it) 1973-06-11
GB1315927A (en) 1973-05-09
CH537133A (de) 1973-05-15
BE780132A (fr) 1972-09-04
FR2127852A5 (de) 1972-10-13

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee