HU193107B - Circuit arrangement for making circuit of main route, in particular to digital sub-exchanges - Google Patents

Circuit arrangement for making circuit of main route, in particular to digital sub-exchanges Download PDF

Info

Publication number
HU193107B
HU193107B HU119285A HU119285A HU193107B HU 193107 B HU193107 B HU 193107B HU 119285 A HU119285 A HU 119285A HU 119285 A HU119285 A HU 119285A HU 193107 B HU193107 B HU 193107B
Authority
HU
Hungary
Prior art keywords
circuit
optical coupler
loop
transistor
emitter
Prior art date
Application number
HU119285A
Other languages
English (en)
Hungarian (hu)
Other versions
HUT39916A (en
Inventor
Bela Toth
Original Assignee
Bhg Hiradastech Vallalat
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 Bhg Hiradastech Vallalat filed Critical Bhg Hiradastech Vallalat
Priority to HU119285A priority Critical patent/HU193107B/hu
Priority to GB08606335A priority patent/GB2173672A/en
Priority to DE19863609063 priority patent/DE3609063A1/de
Priority to SE8601427A priority patent/SE8601427L/
Publication of HUT39916A publication Critical patent/HUT39916A/hu
Publication of HU193107B publication Critical patent/HU193107B/hu

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0096—Trunk circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
HU119285A 1985-03-29 1985-03-29 Circuit arrangement for making circuit of main route, in particular to digital sub-exchanges HU193107B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
HU119285A HU193107B (en) 1985-03-29 1985-03-29 Circuit arrangement for making circuit of main route, in particular to digital sub-exchanges
GB08606335A GB2173672A (en) 1985-03-29 1986-03-14 Trunk circuits
DE19863609063 DE3609063A1 (de) 1985-03-29 1986-03-18 Schaltungsanordnung zum aufbau der hauptlinienschaltung von fernsprechnebenaemtern, insbesondere fuer digitale nebenaemter
SE8601427A SE8601427L (sv) 1985-03-29 1986-03-27 Kretsanordning for uppbyggnad av huvudlinjekretsen for telefonbicentraler, speciellt for digitala bicentraler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU119285A HU193107B (en) 1985-03-29 1985-03-29 Circuit arrangement for making circuit of main route, in particular to digital sub-exchanges

Publications (2)

Publication Number Publication Date
HUT39916A HUT39916A (en) 1986-10-29
HU193107B true HU193107B (en) 1987-08-28

Family

ID=10953273

Family Applications (1)

Application Number Title Priority Date Filing Date
HU119285A HU193107B (en) 1985-03-29 1985-03-29 Circuit arrangement for making circuit of main route, in particular to digital sub-exchanges

Country Status (4)

Country Link
DE (1) DE3609063A1 (de)
GB (1) GB2173672A (de)
HU (1) HU193107B (de)
SE (1) SE8601427L (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220820B (en) * 1988-07-13 1992-07-08 Philips Electronic Associated Telephone line loop current regulator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2305080A1 (fr) * 1975-03-20 1976-10-15 Jeumont Schneider Termineur electronique
US4150260A (en) * 1975-06-18 1979-04-17 Hitachi, Ltd. Subscriber's circuit for four-wire-system local switch
CH599731A5 (de) * 1976-03-02 1978-05-31 Ibm
US4142075A (en) * 1977-10-11 1979-02-27 Burr-Brown Research Corporation Interface circuit and method for telephone extension lines
GB1600254A (en) * 1977-10-26 1981-10-14 Plessey Co Ltd Electronic detection circuits
DE2846934A1 (de) * 1978-10-27 1980-04-30 Siemens Ag Vollelektronische schleifenschlussschaltung
FR2546351B1 (fr) * 1983-05-18 1989-02-24 Telecommunications Sa Circuit de ligne pour joncteur de reseau

Also Published As

Publication number Publication date
GB8606335D0 (en) 1986-04-23
HUT39916A (en) 1986-10-29
SE8601427D0 (sv) 1986-03-27
GB2173672A (en) 1986-10-15
SE8601427L (sv) 1986-09-30
DE3609063A1 (de) 1986-10-02

Similar Documents

Publication Publication Date Title
US6026159A (en) Integrated ringer for short telephone lines
US5509068A (en) Electronic ring monitoring device for telecommunications line
US5796815A (en) Communications device with improved ring signal detection
US3955052A (en) Subscriber unit particularly useful for time-division-multiplex system
TW264598B (de)
US4171469A (en) Abbreviated dialing system
US3601538A (en) Carrier and voice-frequency telephone system
US3321583A (en) Supervisory circuit for telephone subscriber's line
US4894860A (en) Trunk interface circuitry for telephone systems
US3689705A (en) System for party line signalling using re-encoded ringing signals
US4500754A (en) Solid state off hook phone line load
JPH04233891A (ja) ボタン電話用インタフェース装置
CA1116734A (en) Subscriber drop-connected circuits
US3626101A (en) Loop extender for subscribers connected to a central office by abnormally long telephone lines
HU193107B (en) Circuit arrangement for making circuit of main route, in particular to digital sub-exchanges
US3730999A (en) Telephone ring-trip circuit
MY103396A (en) Apparatus for connecting and disconnecting a ringing- signal to a subscriber
US3987375A (en) Transmission bridge exhibiting reduced distortion
CA1138581A (en) Loop, dial pulse and ring trip detection circuit with capacitive shunt network
US4899379A (en) Circuit arrangement for the connection of line circuits of a digital time multiplex-telephone network
US3366745A (en) Remote telephone extension system
US3798379A (en) Connector terminal dial repulser
JP3287626B2 (ja) 電話機付きファクシミリ装置
JPH0342836B2 (de)
US5253290A (en) Circuit arrangement for the transmission of telecommunication signals

Legal Events

Date Code Title Description
HU90 Patent valid on 900628
HMM4 Cancellation of final prot. due to non-payment of fee