DAVID ENDLER; MARK COLLIER HACKING EXPOSED VOIP: VOICE OVER IP SECURITY SECRETS AND SOLUTIONS - - TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED 2007 - xxvii+546 ISBN: 0070647658 Subjects--Topical Terms: SECURITY EXPLOITING THE VOIP NETWORK Dewey Class. No.: 005.8(MCA) / DAV