SE437453B - Abonnentkrets - Google Patents

Abonnentkrets

Info

Publication number
SE437453B
SE437453B SE7810700A SE7810700A SE437453B SE 437453 B SE437453 B SE 437453B SE 7810700 A SE7810700 A SE 7810700A SE 7810700 A SE7810700 A SE 7810700A SE 437453 B SE437453 B SE 437453B
Authority
SE
Sweden
Prior art keywords
subscriber
ecc
voltage
circuit
signal
Prior art date
Application number
SE7810700A
Other languages
English (en)
Swedish (sv)
Other versions
SE7810700L (sv
Inventor
G M M Ferrieu
Original Assignee
Trt Telecom Radio Electr
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 FR7731145A external-priority patent/FR2406357A1/fr
Priority claimed from FR7738404A external-priority patent/FR2412995A2/fr
Priority claimed from FR7801461A external-priority patent/FR2415405A1/fr
Application filed by Trt Telecom Radio Electr filed Critical Trt Telecom Radio Electr
Publication of SE7810700L publication Critical patent/SE7810700L/xx
Publication of SE437453B publication Critical patent/SE437453B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • 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
    • H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Meter Arrangements (AREA)
SE7810700A 1977-10-17 1978-10-13 Abonnentkrets SE437453B (sv)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR7731145A FR2406357A1 (fr) 1977-10-17 1977-10-17 Joncteur d'abonne telephonique
FR7738404A FR2412995A2 (fr) 1977-12-20 1977-12-20 Joncteur d'abonne telephonique
FR7801461A FR2415405A1 (fr) 1978-01-19 1978-01-19 Joncteur d'abonne utilisant des impulsions modulees en largeur pour engendrer les signaux d'appel et de taxation

Publications (2)

Publication Number Publication Date
SE7810700L SE7810700L (sv) 1979-04-18
SE437453B true SE437453B (sv) 1985-02-25

Family

ID=27250779

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7810700A SE437453B (sv) 1977-10-17 1978-10-13 Abonnentkrets

Country Status (8)

Country Link
US (1) US4211896A (fr)
JP (1) JPS5465406A (fr)
CA (1) CA1119330A (fr)
CH (1) CH636990A5 (fr)
DE (1) DE2844492C3 (fr)
GB (1) GB2007463B (fr)
NL (1) NL186426C (fr)
SE (1) SE437453B (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422300A1 (fr) * 1978-04-03 1979-11-02 Trt Telecom Radio Electr Joncteur comportant un amplificateur de puissance symetrique pour alimenter la ligne d'abonne
EP0006583A1 (fr) * 1978-06-28 1980-01-09 Siemens Aktiengesellschaft Procédé pour l'injection du courant d'appel et du courant d'alimentation de ligne sans inductances, sans contact de relais et sans transformateurs
NL7903663A (nl) * 1979-05-10 1980-11-12 Philips Nv Versterker voor toepassing in een lijncircuit.
FR2460078B1 (fr) * 1979-06-25 1986-12-12 Trt Telecom Radio Electr Joncteur d'abonne electronique
EP0029823B1 (fr) * 1979-06-25 1984-03-14 Telecommunications Radioelectriques Et Telephoniques T.R.T. Circuit de pondération de courants
FR2466923A1 (fr) * 1979-10-05 1981-04-10 Materiel Telephoniqu Thomson C Circuit de generation et d'injection de sonnerie
US4354062A (en) * 1980-01-31 1982-10-12 Bell Telephone Laboratories, Incorporated Communication system signaling circuit
NL8000859A (nl) * 1980-02-12 1981-09-01 Philips Nv Inrichting voor het toevoeren van een wekspanning aan een abonneelijn.
US4524246A (en) * 1982-07-07 1985-06-18 Harris Corporation SLIC II--common-mode current rejection
FR2549668B1 (fr) * 1983-07-22 1985-10-04 Thomson Csf Mat Tel Circuit injecteur de sonnerie pour poste telephonique d'abonne
FR2585526A1 (fr) * 1985-07-25 1987-01-30 Kalfon Rene Equipement de signalisation de ligne d'abonne pour commutateur telephonique
FR2606960A1 (fr) * 1986-11-14 1988-05-20 Efcis Circuit d'emission de signaux numeriques pour un reseau telephonique
US5260996A (en) * 1990-12-10 1993-11-09 Reliance Comm/Tec Corporation Current limited electronic ringing generator
EP0829997B1 (fr) * 1996-08-30 2003-06-25 STMicroelectronics S.r.l. Circuit pour la génération d'un signal de taxation dans un système de communication
DE10146891C2 (de) * 2001-09-24 2003-08-14 Infineon Technologies Ag Verfahren zum Übertragen von Gebührenbestimmungssignalen über einen Datenübertragungspfad und Vorrichtung zur Spannungspegelgenerierung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2138548B1 (fr) * 1971-05-19 1973-05-25 Ibm France
DE2133148C3 (de) * 1971-07-03 1979-04-19 Te Ka De Felten & Guilleaume Fernmeldeanlagen Gmbh, 8500 Nuernberg Elektronischer Umpoler
CH593594A5 (fr) * 1975-07-31 1977-12-15 Stoppani Sa
US4132864A (en) * 1977-04-28 1979-01-02 International Business Machines Corporation Digital measurement of the DC value in an AC signal adapted to telephone off-hook detection

Also Published As

Publication number Publication date
JPS5465406A (en) 1979-05-26
JPS571949B2 (fr) 1982-01-13
GB2007463B (en) 1982-01-20
CH636990A5 (de) 1983-06-30
DE2844492C3 (de) 1980-12-11
DE2844492A1 (de) 1979-04-19
SE7810700L (sv) 1979-04-18
DE2844492B2 (de) 1980-04-17
CA1119330A (fr) 1982-03-02
GB2007463A (en) 1979-05-16
NL186426C (nl) 1990-11-16
NL7810301A (nl) 1979-04-19
US4211896A (en) 1980-07-08

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