Radicati Group estimates that by 2009, 74% of all corporate telephony lines will be IP lines. Worldwide revenue for hybrid and pure IP PBXs is expected to grow from approximately $1.5 bln in 2005, to $9.9 bln in 2009.
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Radicati Group estimates that by 2009, 74% of all corporate telephony lines will be IP lines. Worldwide revenue for hybrid and pure IP PBXs is expected to grow from approximately $1.5 bln in 2005, to $9.9 bln in 2009.