SE7713702L - Sendar- och mottagarkrets for abonnenttelefonapparater - Google Patents

Sendar- och mottagarkrets for abonnenttelefonapparater

Info

Publication number
SE7713702L
SE7713702L SE7713702A SE7713702A SE7713702L SE 7713702 L SE7713702 L SE 7713702L SE 7713702 A SE7713702 A SE 7713702A SE 7713702 A SE7713702 A SE 7713702A SE 7713702 L SE7713702 L SE 7713702L
Authority
SE
Sweden
Prior art keywords
sender
receiver circuit
subscriber telephone
telephone devices
devices
Prior art date
Application number
SE7713702A
Other languages
Unknown language ( )
English (en)
Other versions
SE440303B (sv
Inventor
Arrigo S D
A Neri
Original Assignee
Studie Lab Telecomunicazioni S
Ates Componenti Elettron
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 IT3005076A external-priority patent/IT1065163B/it
Priority claimed from IT2786077A external-priority patent/IT1114420B/it
Application filed by Studie Lab Telecomunicazioni S, Ates Componenti Elettron filed Critical Studie Lab Telecomunicazioni S
Publication of SE7713702L publication Critical patent/SE7713702L/sv
Publication of SE440303B publication Critical patent/SE440303B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits
    • H04M1/585—Anti-side-tone circuits implemented without inductive element
SE7713702A 1976-12-03 1977-12-02 Sendar- och mottagarkrets for abonnenttelefonapparater SE440303B (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT3005076A IT1065163B (it) 1976-12-03 1976-12-03 Circuito trasmittente e ricevente per apparecchio telefonico d'utente
IT2786077A IT1114420B (it) 1977-09-23 1977-09-23 Circuito trasmittente e ricevente per apparecchio telefonico d'utente con dispositivo elettronico di segnalazione

Publications (2)

Publication Number Publication Date
SE7713702L true SE7713702L (sv) 1978-06-04
SE440303B SE440303B (sv) 1985-07-22

Family

ID=26328748

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7713702A SE440303B (sv) 1976-12-03 1977-12-02 Sendar- och mottagarkrets for abonnenttelefonapparater

Country Status (8)

Country Link
US (1) US4146753A (sv)
JP (1) JPS5816782B2 (sv)
BR (1) BR7707915A (sv)
DE (1) DE2753130B2 (sv)
FR (1) FR2373200A1 (sv)
GB (1) GB1546046A (sv)
NL (1) NL187662C (sv)
SE (1) SE440303B (sv)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332984A (en) * 1979-12-13 1982-06-01 Bell Telephone Laboratories, Incorporated Active speech network circuit for a telephone set
FR2478412A1 (fr) * 1980-03-14 1981-09-18 Radiotechnique Compelec Procede pour adapter automatiquement des circuits electroniques de postes telephoniques a la resistance de la ligne, et poste comportant des circuits auto-adaptes
JPS6041909B2 (ja) * 1980-03-26 1985-09-19 日本電気株式会社 電話機通話回路網
FR2538648A1 (fr) * 1982-12-28 1984-06-29 Thomson Csf Circuit de suppression de signal de microphone pour poste telephonique
GB8319786D0 (en) * 1983-07-22 1983-08-24 Plessey Co Plc Adaptive line hybrids
CA1240089A (en) * 1985-12-13 1988-08-02 Mitel Networks Corporation Circuit for maintaining hybrid cancellation of signals in a communication system
BE905921A (nl) * 1986-12-16 1987-06-16 Bell Telephone Mfg Telecommunicatie-inrichting en daarin gebruikte ketens.
US5282157A (en) * 1990-09-13 1994-01-25 Telecom Analysis Systems, Inc. Input impedance derived from a transfer network
JPH09167931A (ja) * 1995-12-15 1997-06-24 Brother Ind Ltd 通信装置の入出力回路

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546395A (en) * 1968-01-15 1970-12-08 Bell Telephone Labor Inc Active telephone set speech network employing transistor feedback loop for sidetone balance and equalization
DE1762804B2 (de) * 1968-08-29 1972-01-20 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zur regelung der sende und empfangsbezugs daempfung einer teilnehmerstation einer fernsprechanlage
DE1919111B1 (de) * 1969-04-15 1970-10-29 Siemens Ag Schaltungsanordnung fuer einen Transistorhoerverstaerker mit Daempfungsausgleich in Fernsprechteilnehmerstellen
US3711660A (en) * 1969-12-04 1973-01-16 Univ Monash Hybrid networks
JPS495645B1 (sv) * 1970-02-07 1974-02-08
JPS5211166B1 (sv) * 1970-07-23 1977-03-29
JPS5148006B1 (sv) * 1970-09-03 1976-12-18
NL7115947A (sv) * 1971-11-19 1973-05-22
BE792329A (fr) * 1971-12-09 1973-06-06 Int Standard Electric Corp Circuit de transmission electronique pour poste telephonique
CH549914A (de) * 1972-03-10 1974-05-31 Zellweger Uster Ag Uebertragungseinrichtung mit einer gabelschaltung.
SE380699B (sv) * 1974-03-05 1975-11-10 Ericsson Telefon Ab L M Elektronisk talkrets for en centralbatterimatad telefonapparat.
US4031331A (en) * 1976-01-15 1977-06-21 Northern Electric Company Limited Telephone speech network
BE841105A (nl) * 1976-04-26 1976-10-26 Telekommunikatie toestel
US4071713A (en) * 1976-12-27 1978-01-31 Northern Telecom Limited Telephone speech network

Also Published As

Publication number Publication date
DE2753130C3 (sv) 1987-12-03
DE2753130B2 (de) 1979-11-29
JPS5816782B2 (ja) 1983-04-02
BR7707915A (pt) 1978-09-05
US4146753A (en) 1979-03-27
NL7713405A (nl) 1978-06-06
NL187662C (nl) 1991-12-02
NL187662B (nl) 1991-07-01
FR2373200A1 (fr) 1978-06-30
DE2753130A1 (de) 1978-06-08
FR2373200B1 (sv) 1982-05-21
GB1546046A (en) 1979-05-16
JPS5391509A (en) 1978-08-11
SE440303B (sv) 1985-07-22

Similar Documents

Publication Publication Date Title
JPS5354402A (en) Circuit for setting subscriber*s key telephone set
DK577877A (da) Telefonsamtelenetvaerk
IT1083388B (it) Suoneria elettronica per apparecchi telefonici
BE843895A (nl) Elektronisch telefoonnetwerk
JPS5385105A (en) Telephone and data network for mobile subscriber
IT8019651A0 (it) Apparecchio telefonico e microtelefono integrali.
SE7713702L (sv) Sendar- och mottagarkrets for abonnenttelefonapparater
AT360593B (de) Funktelefoniesystem
DD133387A5 (de) Schaltungsanordnung fuer teilnehmerleitungen fuer fernsprechaemter
JPS5317006A (en) Key telephone line circuit
JPS54136108A (en) Telephone conference repeater circuit
SE7709758L (sv) Telefonlinjekrets
IL51661A (en) Telephone subscriber connection device
YU222377A (en) Telephone set circuit diagram for single and double used subscriber connection lines
AU2955177A (en) Telephone line circuit
YU164176A (en) Circuit diagram for protecting telephone terminals and othher devices
CA40751S (en) Telephone answering device
SE431386B (sv) Elektronisk telefonkretsanordning
JPS537109A (en) Subscriber*s line circuit
CS179883B1 (en) Electronic holding circuit for telephone call holding
AU1115976A (en) Telephone answering device
DK138060B (da) Telefonabonnentinstalleret detektorkredsløb.
JPS5299098A (en) Operatorless telephone calling device
JPS52149009A (en) Telephone receiver
JPS5331907A (en) Telephone receiver except bell

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 7713702-4

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 7713702-4

Format of ref document f/p: F