BE336223A - - Google Patents

Info

Publication number
BE336223A
BE336223A BE336223DA BE336223A BE 336223 A BE336223 A BE 336223A BE 336223D A BE336223D A BE 336223DA BE 336223 A BE336223 A BE 336223A
Authority
BE
Belgium
Prior art keywords
relay
contact
office
earth
relays
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE336223A publication Critical patent/BE336223A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
BE336223D BE336223A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
BE336223A true BE336223A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=14541

Family Applications (1)

Application Number Title Priority Date Filing Date
BE336223D BE336223A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
BE (1) BE336223A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Similar Documents

Publication Publication Date Title
BE336223A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
US3813500A (en) Alarm system utilizing telephone talking pairs
US4199659A (en) Electronic prepay adapter circuit for central office telephone equipment
US6141416A (en) Analog telephone subscriber terminal apparatus
FI57858C (fi) Anordning foer aotskiljning och/eller alstring av signaler som indikerar reserveringslaeget pao bestaellarens telefonlinje och/eller funktionsupplysning
US1742930A (en) Telephone system
US4207438A (en) Rotary selector adapted to scan a line multiple in a step-by-step telephone exchange
US2421943A (en) Telephone traffic indicating apparatus
JPS6342606Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
US4169221A (en) Method and apparatus for testing a subscriber line group marker of a telephone central office cross bar switching device
US980690A (en) Telephone-rent-collecting device.
Hershey Automatic telephone practice
DE912233C (de) Schaltungsanordnung zur Ausloesung von Verbindungen in Fernmeldeanlagen, insbesondere Fernsprechanlagen mit Waehlerbetrieb
DE828856C (de) Schaltungsanordnung fuer Gesellschaftsleitungen in Fernmeldeanlagen, insbesondere Fernsprechanlagen
DE428872C (de) Schaltungsanordnung fuer Vorwaehler in Fernsprechanlagen mit Waehlerbetrieb
US1147025A (en) Telephony.
US1244571A (en) Telephone-exchange system.
US1174434A (en) Telephone pay-station.
US1529902A (en) Watchman's service
US1312688A (en) Plancxtrai
SU427486A1 (ru) АБОНЕНТСКИЙ КОМПЛЕКТНА ТРАНСФЛЮКСОРАХ ДЛЯ АВТОМАТИЧЕСКИХТЕЛЕФОННЫХ СТАНЦИЙ С ЭЛЕКТРОИНЫГу\УПРАВЛЕНИЕМ
BE415527A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SU1085013A1 (ru) Телефон-автомат
US1358945A (en) Measured-service telephone system
US1253698A (en) Automatic switching mechanism.