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3CX Phone System - FREE EDITION - a free IP PBX & SIP server
It looks to us like the folks over at 3CX have it all going on with their VoIP offer of a phone, PBX, and SIP server
Their FREE edition is a fully featured free IP PBX, has no time outs, and is supported via the 3CX forums
You get an unlimited number of extensions, up to 8 simultaneous calls, blind and attended call transfer and a whole list of other features
Call forward on busy and call forward on no answer are both great features just by themselves. Never miss a call.
So what is the catch? For starters there is no ability to place calls using the Windows Call Assistant. Be sure to check their entire feature list and you see, however, that the free version supports SIP hardware and SIP software.
This is a well qualified free SIP and VoIP download that includes a free PBX and a free SIP server for VoIP
Visit 3CX here
