Syngress – Configuring Cisco Voice Over IP
Wednesday, July 14th, 2010Increasing competition and worldwide deregulation are opening up new opportunities for Internet service providers (ISPs) to compete with traditional "telephone" companies such as AT&T and MCI. Killen and Associates have estimated that the worldwide voice-over-IP (VoIP) long distance services market will be worth £5.8 billion by 2002. ISPs can leverage their existing data infrastructure and [...]