Long-term cost savings and extensive feature sets make voice over Internet protocol (VoIP) phone systems an attractive option for many businesses. But with prices for a single VoIP phone ranging from $150 to $700 (USD) or more, switching to VoIP can be an expensive proposition. Find out what to look for in a VoIP phone system, how to buy, what you can expect to pay, and how to get the most out of your investment.
sip service provider list
Communications Server 2007, a SIP-based communications platform, the Redmond giant plans to provide presence-based VoIP call management, audio, video and Web conferencing, and instant messaging all working in conjunction with existing software and applications. The rollout also includes a unified messaging server called Exchange Server 2007, which integrates email, voice mail and faxing. What''s more, Microsoft Office Communicator 2007 will serve as a presence-based, enterprise VoIP softphone, while