NL159254B - DEVICE FOR BLOCKING HIGH-QUALITY CALL CONNECTIONS. - Google Patents

DEVICE FOR BLOCKING HIGH-QUALITY CALL CONNECTIONS.

Info

Publication number
NL159254B
NL159254B NL7202510A NL7202510A NL159254B NL 159254 B NL159254 B NL 159254B NL 7202510 A NL7202510 A NL 7202510A NL 7202510 A NL7202510 A NL 7202510A NL 159254 B NL159254 B NL 159254B
Authority
NL
Netherlands
Prior art keywords
call connections
blocking high
quality call
quality
blocking
Prior art date
Application number
NL7202510A
Other languages
Dutch (nl)
Other versions
NL7202510A (en
Inventor
Gerrit Van Der Tak
Original Assignee
Nederlanden Staat
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 Nederlanden Staat filed Critical Nederlanden Staat
Priority to NL7202510A priority Critical patent/NL159254B/en
Publication of NL7202510A publication Critical patent/NL7202510A/xx
Publication of NL159254B publication Critical patent/NL159254B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/38—Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
NL7202510A 1972-02-25 1972-02-25 DEVICE FOR BLOCKING HIGH-QUALITY CALL CONNECTIONS. NL159254B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7202510A NL159254B (en) 1972-02-25 1972-02-25 DEVICE FOR BLOCKING HIGH-QUALITY CALL CONNECTIONS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7202510A NL159254B (en) 1972-02-25 1972-02-25 DEVICE FOR BLOCKING HIGH-QUALITY CALL CONNECTIONS.

Publications (2)

Publication Number Publication Date
NL7202510A NL7202510A (en) 1973-08-28
NL159254B true NL159254B (en) 1979-01-15

Family

ID=19815465

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7202510A NL159254B (en) 1972-02-25 1972-02-25 DEVICE FOR BLOCKING HIGH-QUALITY CALL CONNECTIONS.

Country Status (1)

Country Link
NL (1) NL159254B (en)

Also Published As

Publication number Publication date
NL7202510A (en) 1973-08-28

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Legal Events

Date Code Title Description
VJC Lapsed due to non-payment of the due maintenance fee for the patent or patent application
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: STAAT DER NED