BE436304A - - Google Patents

Info

Publication number
BE436304A
BE436304A BE436304DA BE436304A BE 436304 A BE436304 A BE 436304A BE 436304D A BE436304D A BE 436304DA BE 436304 A BE436304 A BE 436304A
Authority
BE
Belgium
Prior art keywords
office
equipment
ohronometric
signals
alternating current
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE436304A publication Critical patent/BE436304A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Meter Arrangements (AREA)
BE436304D BE436304A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE436304A true BE436304A (enrdf_load_stackoverflow)

Family

ID=95001

Family Applications (1)

Application Number Title Priority Date Filing Date
BE436304D BE436304A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE436304A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
US4118603A (en) DC signaling circuit for use in conjunction with isolation transformers
US3718765A (en) Communication system with provision for concealing intelligence signals with noise signals
EP0307781B1 (fr) Système et dispositif de protection et de téléalimentation pour équipement connecté par deux transformateurs à une liaison de transmission à quatre fils
BE436304A (enrdf_load_stackoverflow)
JPS6251018B2 (enrdf_load_stackoverflow)
US4829517A (en) Circuit arrangement for injecting meter pulses for subscriber tariff counting
US3778771A (en) Remote meter reading apparatus
EP0082749B1 (fr) Terminal télématique raccordé à deux lignes téléphoniques et à téléalimentation partielle
US3941941A (en) Relayless switching circuit for application of ringing signals
EP0298813B1 (fr) Appareil téléphonique public à connexion permanente
US1868960A (en) Test set
US2847509A (en) Party line paystation identification
US251519A (en) Combined telephone and electric-clock system
US2418424A (en) Electrical measuring device
US1263421A (en) Telephone-substation circuit.
US2134690A (en) Electrical communication network
SU930739A1 (ru) Абонентское устройство квазиэлектронной АТС малой емкости
US3548080A (en) Circuit arrangement for teleprinter exchange systems
SU1257854A1 (ru) Устройство дл ограничени тарифного интервала таксофона
US1688475A (en) Substation telephone circuits
US1312688A (en) Plancxtrai
JP2742845B2 (ja) 加入者回線試験方式
BE406546A (enrdf_load_stackoverflow)
KR860001454B1 (ko) 다중주파수(mf)형 신호중계방법 및 장치
Gati Submarine cable rapid telegraphy; ocean and intercontinental telephony