DK115975A - - Google Patents

Info

Publication number
DK115975A
DK115975A DK115975A DK115975A DK115975A DK 115975 A DK115975 A DK 115975A DK 115975 A DK115975 A DK 115975A DK 115975 A DK115975 A DK 115975A DK 115975 A DK115975 A DK 115975A
Authority
DK
Denmark
Application number
DK115975A
Other languages
Danish (da)
Inventor
P Elsner
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
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of DK115975A publication Critical patent/DK115975A/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/448—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Telephonic Communication Services (AREA)
  • Facsimiles In General (AREA)
DK115975A 1974-03-29 1975-03-20 DK115975A (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2415368A DE2415368B1 (de) 1974-03-29 1974-03-29 Schaltungsanordnung für Fernsprechanlagen, insbesondere Fernsprechnebenstellenanlagen, zur einwandfreien Erkennung des ankommenden Ruf wechselstromes bei ankommender Belegung einer Verbindungsleitung

Publications (1)

Publication Number Publication Date
DK115975A true DK115975A (cs) 1975-09-30

Family

ID=5911640

Family Applications (1)

Application Number Title Priority Date Filing Date
DK115975A DK115975A (cs) 1974-03-29 1975-03-20

Country Status (11)

Country Link
AT (1) AT334983B (cs)
BE (1) BE827366A (cs)
CH (1) CH588196A5 (cs)
DE (1) DE2415368B1 (cs)
DK (1) DK115975A (cs)
FR (1) FR2266392B1 (cs)
GB (1) GB1495994A (cs)
IT (1) IT1034679B (cs)
LU (1) LU72147A1 (cs)
NL (1) NL7503440A (cs)
SE (1) SE7503635L (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT380978B (de) * 1984-04-27 1986-08-11 Uher Ag Einrichtung zur bewertung von empfangssignalen in tonfrequenz-rundsteuerempfaengern (tre)

Also Published As

Publication number Publication date
IT1034679B (it) 1979-10-10
LU72147A1 (cs) 1975-08-20
CH588196A5 (cs) 1977-05-31
SE7503635L (cs) 1975-09-30
FR2266392A1 (cs) 1975-10-24
BE827366A (fr) 1975-09-29
DE2415368B1 (de) 1975-07-03
ATA163075A (de) 1976-06-15
FR2266392B1 (cs) 1977-11-18
NL7503440A (nl) 1975-10-01
AT334983B (de) 1977-02-10
GB1495994A (en) 1977-12-21

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Legal Events

Date Code Title Description
PBP Patent lapsed