BE500568A - - Google Patents

Info

Publication number
BE500568A
BE500568A BE500568DA BE500568A BE 500568 A BE500568 A BE 500568A BE 500568D A BE500568D A BE 500568DA BE 500568 A BE500568 A BE 500568A
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 BE500568A publication Critical patent/BE500568A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Exchange Systems With Centralized Control (AREA)
BE500568D 1950-01-12 BE500568A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE696503X 1950-01-12

Publications (1)

Publication Number Publication Date
BE500568A true BE500568A (enrdf_load_html_response)

Family

ID=20315345

Family Applications (1)

Application Number Title Priority Date Filing Date
BE500568D BE500568A (enrdf_load_html_response) 1950-01-12

Country Status (3)

Country Link
BE (1) BE500568A (enrdf_load_html_response)
FR (1) FR1032717A (enrdf_load_html_response)
GB (1) GB696503A (enrdf_load_html_response)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1539001A (fr) * 1967-05-05 1968-09-13 Materiel Telephonique Système de liaison radiotéléphonique
US3564150A (en) * 1968-06-18 1971-02-16 Int Standard Electric Corp Mobile radio telephone and paging system

Also Published As

Publication number Publication date
GB696503A (en) 1953-09-02
FR1032717A (fr) 1953-07-03

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