Corporate IP telephony market to generate $5.5 bln in 2008

The Radicati Group projects that worldwide revenue from the corporate Internet protocol (IP) telephony business will grow from $1 billion by the end of this year to $5.5 billion in 2008. 44% of corporate telephone lines will be IP-based by 2008, having risen by over 14 times the current installed base. Meanwhile In-Stat/MDR reported in April 2003 that 50% of all enterprise telephone stations sold in the US were IP-based.