AR243045A1 - Un aparato para conectar y desconectar una senal de llamada a un abonado en una disposicion de telecomunicaciones. - Google Patents

Un aparato para conectar y desconectar una senal de llamada a un abonado en una disposicion de telecomunicaciones.

Info

Publication number
AR243045A1
AR243045A1 AR88312131A AR31213188A AR243045A1 AR 243045 A1 AR243045 A1 AR 243045A1 AR 88312131 A AR88312131 A AR 88312131A AR 31213188 A AR31213188 A AR 31213188A AR 243045 A1 AR243045 A1 AR 243045A1
Authority
AR
Argentina
Prior art keywords
disconnecting
called subscriber
ringing signal
ringing
signal
Prior art date
Application number
AR88312131A
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of AR243045A1 publication Critical patent/AR243045A1/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/02—Calling substations, e.g. by ringing
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Emergency Protection Circuit Devices (AREA)
AR88312131A 1987-10-08 1988-10-06 Un aparato para conectar y desconectar una senal de llamada a un abonado en una disposicion de telecomunicaciones. AR243045A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8703890A SE459138B (sv) 1987-10-08 1987-10-08 Anordning i ett telekommunikationssystem vid inkoppling och urkoppling av en ringsignal

Publications (1)

Publication Number Publication Date
AR243045A1 true AR243045A1 (es) 1993-06-30

Family

ID=20369801

Family Applications (1)

Application Number Title Priority Date Filing Date
AR88312131A AR243045A1 (es) 1987-10-08 1988-10-06 Un aparato para conectar y desconectar una senal de llamada a un abonado en una disposicion de telecomunicaciones.

Country Status (20)

Country Link
US (1) US4908854A (es)
EP (1) EP0311580B1 (es)
JP (1) JPH02501525A (es)
KR (1) KR950013625B1 (es)
CN (1) CN1014292B (es)
AR (1) AR243045A1 (es)
AU (1) AU604383B2 (es)
BR (1) BR8807236A (es)
DE (1) DE3868478D1 (es)
DK (1) DK168316B1 (es)
EG (1) EG18642A (es)
ES (1) ES2029730T3 (es)
FI (1) FI98179C (es)
GR (1) GR3003929T3 (es)
IE (1) IE61777B1 (es)
MX (1) MX169117B (es)
MY (1) MY103396A (es)
SE (1) SE459138B (es)
TR (1) TR28806A (es)
WO (1) WO1989003625A1 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT392712B (de) * 1989-05-23 1991-05-27 Siemens Ag Oesterreich Speiseschaltung zur einspeisung von rufwechselspannungen
SE519189C2 (sv) * 1994-06-28 2003-01-28 Ericsson Telefon Ab L M Anordning för att skydda en abonnentlinjekrets från överspänningar
JPH0851652A (ja) * 1994-06-29 1996-02-20 Harris Corp 電話システム用回路、インピーダンス設定回路、加入者線インタフェース回路、並びに接地キー検出器
GB2298533A (en) * 1994-07-29 1996-09-04 Texas Instruments Ltd Overvoltage protector
US5699420A (en) * 1994-12-23 1997-12-16 Lucent Technologies Inc. Bell sound synthesizer
US5528682A (en) * 1995-01-30 1996-06-18 Harris Corporation Double duty capacitor circuit and method
DE19548063C2 (de) * 1995-12-21 1998-03-12 Siemens Ag Schaltungsanordnung zum Schutz einer Teilnehmerschaltung eines Fernmeldevermittlungssystems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5328317A (en) * 1976-08-30 1978-03-16 Hitachi Ltd Control system of subscriber's calling signal
IT1071838B (it) * 1976-11-12 1985-04-10 Cselt Centro Studi Lab Telecom Soppressore di impulsi di suoneria indesiderati per apparecchi telefonici
NL7700719A (nl) * 1977-01-25 1978-07-27 Philips Nv Storingsongevoelig lijnsupervisiecircuit.
FR2451682A1 (fr) * 1979-03-12 1980-10-10 Jeumont Schneider Dispositif d'appel pour installation telephonique automatique d'abonne avec postes supplementaires

Also Published As

Publication number Publication date
MY103396A (en) 1993-06-30
DE3868478D1 (de) 1992-03-26
CN1014292B (zh) 1991-10-09
AU604383B2 (en) 1990-12-13
ES2029730T3 (es) 1992-09-01
WO1989003625A1 (en) 1989-04-20
MX169117B (es) 1993-06-22
BR8807236A (pt) 1989-10-31
SE8703890L (sv) 1989-04-09
SE8703890D0 (sv) 1987-10-08
FI98179C (sv) 1997-04-25
FI98179B (fi) 1997-01-15
US4908854A (en) 1990-03-13
IE61777B1 (en) 1994-11-30
TR28806A (tr) 1997-03-25
DK265989D0 (da) 1989-05-31
JPH02501525A (ja) 1990-05-24
SE459138B (sv) 1989-06-05
EP0311580A1 (en) 1989-04-12
FI892401A (fi) 1989-05-18
KR950013625B1 (en) 1995-11-13
IE882961L (en) 1989-04-08
GR3003929T3 (es) 1993-03-16
CN1032610A (zh) 1989-04-26
EG18642A (en) 1993-08-30
AU2533788A (en) 1989-05-02
KR890702363A (ko) 1989-12-23
FI892401A0 (fi) 1989-05-18
EP0311580B1 (en) 1992-02-19
DK168316B1 (da) 1994-03-07
DK265989A (da) 1989-05-31

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