01515nam a22001577a 4500008004100000020001500041050001600056100002700072245007500099250001200174260003600186300003500222500002000257505105700277700002301334181011b        xxu||||| |||| 00| 0 eng d  a0072122765  aTK5101.B395  aBates, Regis J. (Bud).  aVoice and data communications handbook. /cRegis J. (Bud) Bates et al.  a3rd ed.  aNew York :bMcGraw-Hill,c2000.  axxiv, 998 p. :bill. ;c24 cm.  aIncludes index.  aContents: The history of telecommunications -- Voice characteristics -- The telephone network -- The telephone set -- Analog versus digital transmission -- Carriers -- Lines versus trunks -- Traffic engineering -- Equipment: private branch exchanges -- Key telephone systems -- Voice processing -- Computer-to-Telephony Integration (CTI) -- Data communications -- T1 and the T-carrier system -- The Open Systems Interconnect model (OSI) -- Internet -- Intranet -- Packet switching technologies (X.25)-- Local Area Networks (LANS) -- Ethernet -- Token ring LANS -- Baseband versus broaband -- Fiber distributed data interface -- Switched multimegabit data services -- Frame relay -- Integrated services digital network -- Asynchronous transfer mode -- Digital Subscriber Line (DSL) -- Cable modem systems and technology -- Signalling System 7 light (SS7) -- Local number portability -- Cellular and personal communications systems -- Radio systems -- Light systems -- Videoconferencing -- Finances for telecommunications -- Facsimile -- Cabling systems.  aGregory, Donald W.