00990cam a2200289 a 4500 12916936 NUST - PNEC 20170116180949.0 020905s2002 nyua 001 0 eng 2002512119 0071375686 LIBRARY 621.385 SUL Sulkin, Allan. PBX systems for IP telephony Allan Sulkin. New York : McGraw-Hill, 2002. viii, 487 p. : ill. ; 24 cm. McGraw-Hill telecom professional Includes index. Internet telephony. EL Telephone Private branch exchanges. Contributor biographical information http://www.loc.gov/catdir/bios/mh041/2002512119.html Table of contents http://www.loc.gov/catdir/toc/mh031/2002512119.html 7 cbc copycat 2 ncip 20 y-gencatlg ddc BK 66350 66350 0 0 ddc 0 0 PNEC PNEC WING-A 0000-00-00 0 621.385 SUL PNECLIB-027612 2015-09-08 0000-00-00 BK