BE625550A - - Google Patents

Info

Publication number
BE625550A
BE625550A BE625550DA BE625550A BE 625550 A BE625550 A BE 625550A BE 625550D A BE625550D A BE 625550DA BE 625550 A BE625550 A BE 625550A
Authority
BE
Belgium
Application number
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.)
Publication of BE625550A publication Critical patent/BE625550A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/006—Call diverting means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
BE625550D 1961-12-12 BE625550A (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1240761 1961-12-12

Publications (1)

Publication Number Publication Date
BE625550A true BE625550A (it)

Family

ID=20295685

Family Applications (1)

Application Number Title Priority Date Filing Date
BE625550D BE625550A (it) 1961-12-12

Country Status (5)

Country Link
US (1) US3176082A (it)
BE (1) BE625550A (it)
DE (1) DE1166291B (it)
GB (1) GB959641A (it)
NL (1) NL286252A (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335231A (en) * 1964-04-27 1967-08-08 Bell Telephone Labor Inc Switching system using momentary onhook signalling in answered trunk to detect abandoned call
US3341663A (en) * 1964-04-29 1967-09-12 Bell Telephone Labor Inc Telephone answering system
US3519745A (en) * 1966-10-18 1970-07-07 Gen Alarm Corp Selected pre-recorded telephonic message transmission system dialling plural pre-selected numbers and dialling a new number if the called number is busy or does not answer
US3515813A (en) * 1968-01-04 1970-06-02 Automatic Elect Lab Telephone ringing signal transfer device
US3946146A (en) * 1975-01-17 1976-03-23 Gte Automatic Electric Laboratories Incorporated Discrete ringing detector for use in key telephone systems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB633520A (en) * 1947-08-25 1949-12-19 Ericsson Telephones Ltd Improvements in or relating to telephone circuits
US2718560A (en) * 1952-05-05 1955-09-20 Ericsson Telefon Ab L M Device for forwarding calling signals in telephone instruments

Also Published As

Publication number Publication date
GB959641A (en) 1964-06-03
DE1166291B (de) 1964-03-26
NL286252A (it)
US3176082A (en) 1965-03-30

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