FR2266392A1 - - Google Patents

Info

Publication number
FR2266392A1
FR2266392A1 FR7509080A FR7509080A FR2266392A1 FR 2266392 A1 FR2266392 A1 FR 2266392A1 FR 7509080 A FR7509080 A FR 7509080A FR 7509080 A FR7509080 A FR 7509080A FR 2266392 A1 FR2266392 A1 FR 2266392A1
Authority
FR
France
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
FR7509080A
Other languages
French (fr)
Other versions
FR2266392B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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 FR2266392A1 publication Critical patent/FR2266392A1/fr
Application granted granted Critical
Publication of FR2266392B1 publication Critical patent/FR2266392B1/fr
Expired legal-status Critical Current

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)
  • Facsimiles In General (AREA)
  • Telephonic Communication Services (AREA)
FR7509080A 1974-03-29 1975-03-24 Expired FR2266392B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2415368A DE2415368B1 (en) 1974-03-29 1974-03-29 Circuit arrangement for telephone systems, in particular telephone extension systems, for the correct detection of the incoming call alternating current when a connection line is occupied

Publications (2)

Publication Number Publication Date
FR2266392A1 true FR2266392A1 (en) 1975-10-24
FR2266392B1 FR2266392B1 (en) 1977-11-18

Family

ID=5911640

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7509080A Expired FR2266392B1 (en) 1974-03-29 1975-03-24

Country Status (11)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT380978B (en) * 1984-04-27 1986-08-11 Uher Ag DEVICE FOR EVALUATING RECEIVER SIGNALS IN TONE FREQUENCY RADIO CONTROLLER (TRE)

Also Published As

Publication number Publication date
CH588196A5 (en) 1977-05-31
ATA163075A (en) 1976-06-15
DE2415368B1 (en) 1975-07-03
AT334983B (en) 1977-02-10
SE7503635L (en) 1975-09-30
IT1034679B (en) 1979-10-10
DK115975A (en) 1975-09-30
LU72147A1 (en) 1975-08-20
FR2266392B1 (en) 1977-11-18
BE827366A (en) 1975-09-29
NL7503440A (en) 1975-10-01
GB1495994A (en) 1977-12-21

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Legal Events

Date Code Title Description
ST Notification of lapse