Proactive Security for VoIP Networks

Abstract

The deployment of Voice-over-IP (VoIP), or IP telephony, is accelerating rapidly. Due to the numerous benefits of VoIP systems, including the reduced cost of deployment and management, IP-PBXs are now outselling traditional PBXs and, by 2009, will represent 91 percent of all enterprise phone systems worldwide. As more and more private- and public-sector organizations and service providers plan the migration to VoIP and the associated emerging real-time services, such as IP TV, conferencing, and IP multimedia subsystem (IMS), the need to secure IP communications is becoming increasingly urgent.