01919nam a2200325Ia 4500001001200000003000800012006001900020007001500039008004100054040002100095035002000116050002600136110015000162245041400312260005500726300001500781500004200796504004100838533015200879650005201031650003801083650005701121650003101178655002901209700003001238710009401268710008801362710001701450856012601467ebr10071945CaPaEBRm        u        cr cn|||||||||080919s1989    dcu     sb    000 0 eng d  aCaPaEBRcCaPaEBR  a(OCoLC)5867361214aTK5102.5b.N31 1989eb2 aNational Research Council (U.S.).bCommittee on Review of Switching, Synchronization and Network Control in National Security Telecommunications.10aGrowing vulnerability of the public switched networksh[electronic resource] :bimplications for national security emergency preparedness : a report /cprepared by the Committee on Review of Switching, Synchronization and Network Control in National Security Telecommunications, Board on Telecommunications and Computer Applications, Commission on Engineering and Technical Systems, National Research Council.  aWashington, D.C. :bNational Academy Press,c1989.  axi, 119 p.  aCommittee chairman: John C. McDonald.  aIncludes bibliographical references.  aElectronic reproduction.bPalo Alto, Calif. :cebrary,d2013.nAvailable via World Wide Web.nAccess may be limited to ebrary affiliated libraries. 0aEmergency communication systemszUnited States. 0aNational securityzUnited States. 0aTelecommunicationzUnited StatesxSwitching systems. 0aTelecommunication systems. 7aElectronic books.2local1 aMcDonald, John C.,d1936-2 aNational Research Council (U.S.).bBoard on Telecommunications and Computer Applications.2 aNational Research Council (U.S.).bCommission on Engineering and Technical Systems.2 aebrary, Inc.40uhttp://site.ebrary.com/lib/rucke/Doc?id=10071945zAn electronic book accessible through the World Wide Web; click to view