Specifications of signalling systems R1 and R2 : recommendations Q.310-Q.490

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Specifications of signalling systems R1 and R2 : recommendations Q.310-Q.490

CCITT, International Telegraph and Telephone Consultative Committee

（Blue book : CCITT, IXth Plenary Assembly, Melbourne, 14-25 November 1988, vol. 6 ; fasc. 6-4）

International Telecommunication Union, 1989

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Details

  • NCID
    BA43695870
  • ISBN
    • 9261034810
  • Country Code
    sz
  • Title Language Code
    eng
  • Text Language Code
    eng
  • Place of Publication
    Geneva
  • Pages/Volumes
    182 p.
  • Size
    30 cm
  • Parent Bibliography ID
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