IT1111760B - RINGER CONFERENCE FOR TELEPHONE CENTRAL SPLITTER WITH CENTRALIZED CONTROL UNIT - Google Patents

RINGER CONFERENCE FOR TELEPHONE CENTRAL SPLITTER WITH CENTRALIZED CONTROL UNIT

Info

Publication number
IT1111760B
IT1111760B IT19275/79A IT1927579A IT1111760B IT 1111760 B IT1111760 B IT 1111760B IT 19275/79 A IT19275/79 A IT 19275/79A IT 1927579 A IT1927579 A IT 1927579A IT 1111760 B IT1111760 B IT 1111760B
Authority
IT
Italy
Prior art keywords
ringer
conference
control unit
centralized control
telephone central
Prior art date
Application number
IT19275/79A
Other languages
Italian (it)
Other versions
IT7919275A0 (en
Original Assignee
Materiel Telephonique
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 Materiel Telephonique filed Critical Materiel Telephonique
Publication of IT7919275A0 publication Critical patent/IT7919275A0/en
Application granted granted Critical
Publication of IT1111760B publication Critical patent/IT1111760B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/026—Arrangements for interrupting the ringing current

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
IT19275/79A 1978-01-17 1979-01-15 RINGER CONFERENCE FOR TELEPHONE CENTRAL SPLITTER WITH CENTRALIZED CONTROL UNIT IT1111760B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7801170A FR2423096A1 (en) 1978-01-17 1978-01-17 Ringing circuit for centrally controlled telephone exchange junction - has alternating signal source, and bipolar electronic switch output connected to subscriber and timer

Publications (2)

Publication Number Publication Date
IT7919275A0 IT7919275A0 (en) 1979-01-15
IT1111760B true IT1111760B (en) 1986-01-13

Family

ID=9203528

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19275/79A IT1111760B (en) 1978-01-17 1979-01-15 RINGER CONFERENCE FOR TELEPHONE CENTRAL SPLITTER WITH CENTRALIZED CONTROL UNIT

Country Status (5)

Country Link
BE (1) BE873499A (en)
DE (1) DE2901739A1 (en)
ES (1) ES476875A1 (en)
FR (1) FR2423096A1 (en)
IT (1) IT1111760B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
YU39444B (en) * 1979-09-07 1984-12-31 Iskra Sozd Elektro Indus Subschribes circuit for domestic electronic telephone exchangers
IT1128374B (en) * 1980-02-19 1986-05-28 Cselt Centro Studi Lab Telecom TELEPHONE CIRCUIT FOR THE GENERATION OF THE RINGTONE RHYTHM AND THE DETECTION OF THE RELEASE
US4349703A (en) * 1980-03-31 1982-09-14 International Telephone And Telegraph Corporation Programmable ring signal generator
DE3036686C2 (en) * 1980-09-29 1983-12-01 Siemens AG, 1000 Berlin und 8000 München Subscriber line circuit
DE3141375A1 (en) * 1981-10-17 1983-06-30 Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg METHOD AND CIRCUIT ARRANGEMENT FOR DETECTING LOOP CURRENT CRITERIA IN A TELECOMMUNICATION SYSTEM

Also Published As

Publication number Publication date
FR2423096B1 (en) 1981-10-16
FR2423096A1 (en) 1979-11-09
BE873499A (en) 1979-05-16
IT7919275A0 (en) 1979-01-15
DE2901739A1 (en) 1979-07-19
ES476875A1 (en) 1979-05-16

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