00400nam a2200085Ia 4500100001800000245005800018260000900076520021000085583001900295  aCawkell, A.E.  aTelecommunications - where the action is and will be.  c1990  aConsiders the subject at two levels - the technical, and the political and social.  Covers topics such as data broadcasting, modems and PABXs, fibreoptics, specialised networks, public networks, standards.  c3/7/00kM2LMGR