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Person-to-person realtime IP communications, like presence, VoIP and video applications, offer clear benefits for the enterprise as time- and money-savers. Unified functionality is now available, where all of the above are integrated into one streamlined application and interconnect with other networks. This creates a very important business tool and usage is increasing.-Person-to-person realtime IP communicat ions, like presence, VoIP and video applications. offer clear benefits for the enterprise as time- and money-savers. Unified functionality is n ow available, where all of the above are integrated into one st reamlined application and interconnect with o ther networks. This creates a very important bu siness tool and usage is increasing.