Is open source IP telephony ready for prime time?

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Open source business models are changing market dynamics. Open source, coupled with subscription-based software licensing, is now a widely
accepted business model with significant momentum. Linux and Red Hat are the best examples of the successful pairing of open source technology
(Linux) with a subscription-based software license (Red Hat). Red Hat says eight of the top 10 global investment banks are customers. Goldman Sachs’
recent IT spending survey reports that Red Hat ranks first among software companies gaining share of IT dollars. Linux is having its greatest effect
in the data center, where mission-critical functions are run on higher-end servers and the majority of enterprise IT dollars are spent.

Link: nwfusion.com