Thinkcloud writes with a note that long-standing open-source VoiP software Asterisk has just been updated, and it's packed with more than 200 enhancements, security updates, and new features — including calendar integration and support for Google Voice and Google Talk. Asterisk's fully-featured PBX includes call waiting, hold and transfer, caller ID, and other useful tools so it's a great option for small businesses that need to watch costs."
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