IT-Verantwortliche, Entwickler, Administratoren Computer Systems Organization and Communication Networks, Computer Communication Networks, Information Systems and Communication Service, Information Systems Applications (incl.Internet), Management of Computing and Information Systems, VoIP, VoIP-Sicherheit, VoIP-Grundlagen, VoIP-Technologie, VoIP-Technologie - rechtliche Aspekte
978-3-540-32737-0 (9783540327370)