| http://www.w3.org/ns/prov#value | - other cost of revenues decreased by $3.6 million primarily due to: (i) reduced costs related to our wholly-owned subsidiary, VocalTec US, which was acquired in January 2009, and (ii) a decrease in depreciation and amortization expenses allocated to cost of sales as a result of certain fixed assets and intangible assets becoming fully amortized, offset by cost of revenues, including amortization ex
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