00564nam 2276782 450000100060000000300230000600500090002900800410003808200120007907200230009102000220011410000180013626000240015424500410017865000230021965000220024265000220026465000100028665000250029665000270032176782StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a621.382 adata communication a978-0-07-226335-0 aBates & Adams bMCGRAW. HILL c2007 aVoice & Data Communications Handbook adata communication asignaling systems aswitching systems atitle avoice communications awireless communication