Worldwide IP PBX 1Q05-3Q05 Vendor Shares

This IDC study highlights the shipment and revenue market shares for enterprise IP PBX (pure and hybrid) systems and lines/seats for 1Q05?3Q05. This document was based on the market information published in Worldwide IP PBX 2006?2010 Forecast and Analysis: The Rise of VoIP Applications (IDC #34718, January 2006).

"Although the IP telephony market success metrics are in a state of flux between IT-centric and voice-centric models, Alcatel, Avaya, Cisco, Nortel, and Siemens retain their spots as the top 5 IP PBX vendors worldwide," reports Nora Freedman, a research analyst in the Enterprise Networks group.