[go: up one dir, main page]

IT975844B - Circuito di linea telefonica di ab bonato - Google Patents

Circuito di linea telefonica di ab bonato

Info

Publication number
IT975844B
IT975844B IT70697/72A IT7069772A IT975844B IT 975844 B IT975844 B IT 975844B IT 70697/72 A IT70697/72 A IT 70697/72A IT 7069772 A IT7069772 A IT 7069772A IT 975844 B IT975844 B IT 975844B
Authority
IT
Italy
Prior art keywords
bonato
telephone line
line circuit
circuit
telephone
Prior art date
Application number
IT70697/72A
Other languages
English (en)
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Application granted granted Critical
Publication of IT975844B publication Critical patent/IT975844B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
    • H04M3/62—Keyboard equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Devices For Supply Of Signal Current (AREA)
IT70697/72A 1971-11-24 1972-11-23 Circuito di linea telefonica di ab bonato IT975844B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20191871A 1971-11-24 1971-11-24

Publications (1)

Publication Number Publication Date
IT975844B true IT975844B (it) 1974-08-10

Family

ID=22747831

Family Applications (2)

Application Number Title Priority Date Filing Date
IT70696/72A IT975843B (it) 1971-11-24 1972-11-23 Sistema telefonico d abbonato con apparecchi derivati
IT70697/72A IT975844B (it) 1971-11-24 1972-11-23 Circuito di linea telefonica di ab bonato

Family Applications Before (1)

Application Number Title Priority Date Filing Date
IT70696/72A IT975843B (it) 1971-11-24 1972-11-23 Sistema telefonico d abbonato con apparecchi derivati

Country Status (16)

Country Link
US (1) US3740485A (it)
JP (2) JPS5237928B2 (it)
AR (1) AR202786A1 (it)
AT (2) AT336693B (it)
AU (2) AU462326B2 (it)
BE (2) BE791688A (it)
BR (2) BR7208198D0 (it)
CA (2) CA949245A (it)
CH (2) CH550520A (it)
DE (1) DE2256997C3 (it)
ES (2) ES409258A1 (it)
FR (2) FR2162942A5 (it)
GB (2) GB1416547A (it)
IT (2) IT975843B (it)
NL (2) NL160136C (it)
SE (2) SE386556B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035592A (en) * 1970-12-10 1977-07-12 Societe Francaise Des Telephones Ericsson Subscriber monitoring unit for electronic telephone exchanges
FR2167361A5 (it) * 1972-01-13 1973-08-24 Ericsson Telefon Ab L M
US4417335A (en) * 1979-12-19 1983-11-22 Gte Automatic Electric Labs Inc. Digital satellite telephone office
JPS6144304Y2 (it) * 1980-08-14 1986-12-13
JPS6026857A (ja) * 1983-07-20 1985-02-09 Koyo Seiki Kk チエンジドラムの製造方法
GB2251156A (en) * 1990-12-18 1992-06-24 Sangara Ind Co Ltd Telephone warning light actuated by incoming call or lifting receiver
US5157721A (en) * 1990-12-18 1992-10-20 Paul Lee Control circuit for an electrical telephone accessory
JP3351817B2 (ja) * 1992-06-11 2002-12-03 株式会社日立テレコムテクノロジー 直通回線着信先可変システム
US6546091B1 (en) * 1998-08-28 2003-04-08 Thomson Licensing S.A. Automatic detection of phone system settings for dial-up modem connections

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL289144A (it) * 1962-03-08
US3239610A (en) * 1962-12-26 1966-03-08 Bell Telephone Labor Inc Line circuit for key telephone system
US3333062A (en) * 1964-04-14 1967-07-25 Automatic Elect Lab Centralized switching arrangements with inward dialing
US3441678A (en) * 1965-09-03 1969-04-29 Bell Telephone Labor Inc Conference circuit with selective call splitting
CA920258A (en) * 1969-04-23 1973-01-30 Itt Canada Limited Key telephone systems using pushbutton or rotary dials

Also Published As

Publication number Publication date
CH552317A (de) 1974-07-31
DE2256997B2 (de) 1975-06-12
NL7215454A (it) 1973-05-28
DE2257022B2 (it) 1975-10-02
GB1416546A (en) 1975-12-03
CA949245A (en) 1974-06-11
CH550520A (de) 1974-06-14
AT327990B (de) 1976-02-25
AU4905472A (en) 1974-05-23
BR7208198D0 (pt) 1973-08-30
BE791688A (fr) 1973-03-16
JPS4864807A (it) 1973-09-07
FR2162942A5 (it) 1973-07-20
FR2162943A5 (it) 1973-07-20
US3740485A (en) 1973-06-19
AT336693B (de) 1977-05-25
DE2257022A1 (de) 1973-06-07
ATA986072A (de) 1976-09-15
GB1416547A (en) 1975-12-03
AR202786A1 (es) 1975-07-24
NL160136B (nl) 1979-04-17
DE2256997A1 (de) 1973-06-07
AU4905372A (en) 1974-05-23
JPS4864806A (it) 1973-09-07
BE791689A (fr) 1973-03-16
CA968877A (en) 1975-06-03
SE386556B (sv) 1976-08-09
JPS543561B2 (it) 1979-02-24
NL160136C (nl) 1979-09-17
ES409258A1 (es) 1975-10-01
ES409257A1 (es) 1975-10-01
BR7208197D0 (pt) 1973-09-13
AU462325B2 (en) 1975-06-19
AU462326B2 (en) 1975-06-19
SE375212B (it) 1975-04-07
IT975843B (it) 1974-08-10
DE2256997C3 (de) 1979-01-04
ATA986172A (de) 1975-05-15
JPS5237928B2 (it) 1977-09-26
NL7215457A (it) 1973-05-28

Similar Documents

Publication Publication Date Title
SE377990C (sv) Hogtalande telefonapparat
ES210337Y (es) Dispositivo terminal hembra.
AR193900A1 (es) Protector de linea para circuitos de comunicaciones
IT975844B (it) Circuito di linea telefonica di ab bonato
SE400352B (sv) Festanordning
CH552295A (de) Statische schutzschaltungsanordnung.
IT1002335B (it) Apparecchio telefonico con rice zione amplificata
NL7402575A (nl) Elektronisch telefoontoestel.
IT950709B (it) Circuito di linea per installazioni telefoniche
NL155700B (nl) Luidsprekende telefooninrichting.
IT970460B (it) Circuito di arresto di soneria
BE784382A (fr) Circuit d'abonnes telephoniques
BE788085A (fr) Circuit de maintien de ligne telephonique
IT1014175B (it) Circuito telefonico interurbano
AT315251B (de) Fernsprech-Handapparat
AT313978B (de) Gyratorschaltung
BE764856R (nl) Telefoontoestel
IT943311B (it) Circuito di linea per sistema di comunicazione particolarmente tele fonica
CH556623A (de) Fernsprechapparat.
AT337252B (de) Transistorverstarkerschaltung
NL7515049A (nl) Telefoonverbindingsinrichting.
AT325117B (de) Handapparat für fernsprechapparate
IT952407B (it) Calcolatore elettronico
BR7203431D0 (pt) Equipamento telefonico
BE784090A (fr) Perfectionnements aux systemes telephoniques (