MX153055A - Circuito mejorado de supervision digital para un sistema telefonico - Google Patents

Circuito mejorado de supervision digital para un sistema telefonico

Info

Publication number
MX153055A
MX153055A MX196980A MX19698083A MX153055A MX 153055 A MX153055 A MX 153055A MX 196980 A MX196980 A MX 196980A MX 19698083 A MX19698083 A MX 19698083A MX 153055 A MX153055 A MX 153055A
Authority
MX
Mexico
Prior art keywords
counter
logic circuit
telephone system
exceeded
threshold
Prior art date
Application number
MX196980A
Other languages
English (en)
Inventor
William Thomas Cochran
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of MX153055A publication Critical patent/MX153055A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • 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
MX196980A 1982-04-26 1983-04-20 Circuito mejorado de supervision digital para un sistema telefonico MX153055A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/371,846 US4455456A (en) 1982-04-26 1982-04-26 Digital supervisory circuit for a telephone system

Publications (1)

Publication Number Publication Date
MX153055A true MX153055A (es) 1986-07-22

Family

ID=23465641

Family Applications (1)

Application Number Title Priority Date Filing Date
MX196980A MX153055A (es) 1982-04-26 1983-04-20 Circuito mejorado de supervision digital para un sistema telefonico

Country Status (29)

Country Link
US (1) US4455456A (es)
EP (1) EP0092807B1 (es)
JP (1) JPS58195353A (es)
KR (1) KR880001651B1 (es)
AT (1) ATE32409T1 (es)
AU (1) AU557025B2 (es)
BE (1) BE896561A (es)
BR (1) BR8302051A (es)
CA (1) CA1190678A (es)
DD (1) DD220479A5 (es)
DE (1) DE3375632D1 (es)
DK (1) DK181383A (es)
EG (1) EG15506A (es)
ES (1) ES8404128A1 (es)
FI (1) FI831404L (es)
GR (1) GR78194B (es)
HU (1) HU186273B (es)
IN (1) IN157100B (es)
MA (1) MA19780A1 (es)
MX (1) MX153055A (es)
NO (1) NO831424L (es)
NZ (1) NZ203885A (es)
PH (1) PH21028A (es)
PL (1) PL241632A1 (es)
PT (1) PT76580B (es)
SU (1) SU1416065A3 (es)
TR (1) TR21788A (es)
YU (1) YU91583A (es)
ZA (1) ZA832522B (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU579749B2 (en) * 1982-03-24 1988-12-08 Alcatel Australia Limited A ring signal detector
DE3545574A1 (de) * 1985-12-21 1987-07-02 Philips Patentverwaltung Verfahren und schaltungsanordnung zur auswertung der ausgangssignale von stromflussdetektoren in fernmeldeanlagen
US4887071A (en) * 1988-08-18 1989-12-12 Siemens Transmission Systems, Inc. Digital activity loss detector
US5402482A (en) * 1991-07-08 1995-03-28 Fujitsu Limited Ring trip deciding circuit
JPH05130650A (ja) * 1991-11-07 1993-05-25 Fujitsu Ltd 有線回線におけるオンフツクトランスミツシヨン回路
JP2639304B2 (ja) * 1993-06-15 1997-08-13 日本電気株式会社 加入者回路
SE9400186D0 (sv) * 1994-01-21 1994-01-21 Ericsson Telefon Ab L M Förfarande i ett telekommunikationssystem
EP0675629B1 (de) * 1994-03-04 2004-11-24 Infineon Technologies AG Verfahren zur störsicheren Abhebeerkennung bei Rufsignaleinspeisung in digitalen Fernsprechvermittlungseinrichtungen und Schaltungsanordnung zur Durchführung des Verfahrens
JPH08139802A (ja) * 1994-11-10 1996-05-31 Fujitsu Ltd リングトリップ判定回路
US5694465A (en) * 1995-03-16 1997-12-02 Advanced Micro Devices, Inc. Integrated ringer for short telephone lines

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772477A (en) * 1972-07-17 1973-11-13 Bell Telephone Labor Inc Telephone dial pulse detection circuit
GB1479094A (en) * 1975-03-25 1977-07-06 Standard Telephones Cables Ltd Ring trip detectors
US4087646A (en) * 1977-01-28 1978-05-02 Bell Telephone Laboratories, Incorporated Dual mode telephone subscriber loop current detector
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
IT1128374B (it) * 1980-02-19 1986-05-28 Cselt Centro Studi Lab Telecom Circuito telefonico per la generazione del ritmo di suoneria ed il riconoscimento dello sgancio
US4349703A (en) * 1980-03-31 1982-09-14 International Telephone And Telegraph Corporation Programmable ring signal generator

Also Published As

Publication number Publication date
TR21788A (tr) 1985-07-15
JPS58195353A (ja) 1983-11-14
ATE32409T1 (de) 1988-02-15
BE896561A (fr) 1983-10-26
DK181383D0 (da) 1983-04-25
EP0092807B1 (en) 1988-02-03
EP0092807A3 (en) 1985-01-09
GR78194B (es) 1984-09-26
PT76580B (en) 1985-12-16
DE3375632D1 (en) 1988-03-10
NO831424L (no) 1983-10-27
ZA832522B (en) 1984-01-25
CA1190678A (en) 1985-07-16
ES521845A0 (es) 1984-04-01
HU186273B (en) 1985-07-29
MA19780A1 (fr) 1983-12-31
AU557025B2 (en) 1986-12-04
YU91583A (en) 1986-04-30
US4455456A (en) 1984-06-19
EP0092807A2 (en) 1983-11-02
KR880001651B1 (ko) 1988-09-03
BR8302051A (pt) 1983-12-27
SU1416065A3 (ru) 1988-08-07
PT76580A (en) 1983-05-01
FI831404A0 (fi) 1983-04-25
DK181383A (da) 1983-10-27
EG15506A (en) 1986-09-30
ES8404128A1 (es) 1984-04-01
PH21028A (en) 1987-06-30
KR840004841A (ko) 1984-10-24
DD220479A5 (de) 1985-03-27
PL241632A1 (en) 1984-03-26
FI831404L (fi) 1983-10-27
IN157100B (es) 1986-01-18
AU1367783A (en) 1983-11-03
NZ203885A (en) 1986-04-11

Similar Documents

Publication Publication Date Title
DE2966268D1 (en) A switching circuit
MX153055A (es) Circuito mejorado de supervision digital para un sistema telefonico
ES410120A1 (es) Un dispositivo inversor estatico, particularmente para al- tas tensiones.
GB1461207A (en) Electrical circuit for indicating the presence and direction of flow of an electrical current
GB1504177A (en) Dictation system
NO833776L (no) Lekkasjevakt
ES457077A1 (es) Perfeccionamientos en circuitos de decision de densidad de informacion para sistemas de transmision fototelegrafica.
ES428161A1 (es) Un sistema de deteccion de fallos para dispositivos que utilizan convertidores digitales paralelo a serie.
GB1297628A (es)
JPS5780871A (en) Video signal binary circuit in photoelectric conversion system
RO87256B1 (ro) Circuit digital de control pentru un sistem telefonic
JPS57207902A (en) Input circuit of controlling device
JPS5668030A (en) Logic circuit
NO158278C (no) Regenerator for digitale signaler i ami-kode, forsynt medkontrollorgan for koderegel-krenkelse.
JPS5714905A (en) Digital input circuit
GB1008200A (en) A scanning device for scanning binary coded scales
JPS6417181A (en) Optical picture input device
JPS55113970A (en) Target detector
ES467444A1 (es) Dispositivo para detectar la desviacion comun de un numero mde senales de cambio electricas de una pluralidad n de sena-les de cambio.
JPS5719837A (en) Data processing system
JPS5539980A (en) Urgent control circuit
JPS56143742A (en) Terminal starting system