01050cam a2200289 a 450000100090000000300120000900500170002100800410003801000170007902000150009604000120011108200160012310000190013924500490015826000360020730000350024344000370027850000200031565000280033565000410036385600950040485600750049990600450057494200120061999900170063195201120064812916936NUST - PNEC20170116180949.0020905s2002    nyua          001 0 eng    a  2002512119  a0071375686  cLIBRARY  a621.385 SUL1 aSulkin, Allan.10aPBX systems for IP telephony cAllan Sulkin.  aNew York :bMcGraw-Hill,c2002.  aviii, 487 p. :bill. ;c24 cm. 0aMcGraw-Hill telecom professional  aIncludes index. 0aInternet telephony.xEL 0aTelephonexPrivate branch exchanges.423Contributor biographical informationuhttp://www.loc.gov/catdir/bios/mh041/2002512119.html413Table of contentsuhttp://www.loc.gov/catdir/toc/mh031/2002512119.html  a7bcbcccopycatd2encipf20gy-gencatlg  2ddccBK  c66350d66350  00102ddc4070aPNECbPNECcWING-Ad0000-00-00l0o621.385 SULpPNECLIB-027612r2015-09-08w0000-00-00yBK