01028cam a22003134a 4500 13043405 BD-DhUL 20150114174302.0 021230s2003 maua 001 0 eng 2002044068 158053497X (alk. paper) BD-DhUL BD-DhUL DLC pcc TK5105.8865 A27 2003 621.385 ABC Abrahams, John R. Centrex or PBX : the impact of IP / John R. Abrahams, Mauro Lollo. Boston : Artech House, c2003. xvi, 161 p. : ill. ; 24 cm. US$ 89.10 Artech House telecommunications library Includes index. Internet telephony. Centrex telephone service. Lollo, Mauro. 7 cbc orignew 1 ocip 20 y-gencatlg ddc BK pc21 2002-12-30 to ASCD jg14 2002-12-31 aa20 2003-01-24 ps09 2003-04-18 2 copies rec'd., to CIP ver. jg00 2003-04-28; 31130 31130 0 0 ddc 0 621_385000000000000_ABC 0 NFIC 58766 DUSL DUSL GEN 2012-09-29 Purchased 621.385 ABC 475378 2015-01-14 2015-01-14 BK