"By leveraging Session Initiation Protocol (SIP) and other
standard protocols, open source IP PABXs have achieved some
impressive advancements over the years and the integration options
for third party apps, like GoogleTalk and Jabber, promises to make
them an attractive alternative for enterprises investigating
low-cost unified communications (UC) solutions.
"Here are five exciting open source VoIP and UC projects to keep
an eye on."
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