1)   Axon Virtual PBx System 1.20
Axon is a virtual PBX designed to manage calls within a business or call center environment. Any business can implement this scalable PBX solution with only an existing PC which connects to phone lines and extensions using VoIP technology.
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 2)   4PSA VoipNow Professional 1.5
4PSA VoipNow is the leading Linux IP PBX server software designed for providing hosted PBX services and enterprise VoIP. Advanced features like IVR, call queue, callback, calling card and conference are available.
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 3)   PBXPress Live CD Demo 1.1
PBXpress is a voice over IP (VoIP) replacement of traditional PBX in the era of the Internet. All of your phones are connected and provisioned via an IP network, your phone calls are always recorded and connected at a fraction of the usual cost.
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