Mobile centrex is a network-based service using wireless mobile phones that enables traditional PBX-style calling features. Mobile centrex can be provided in several forms: IP PBX with cellular or Wi-Fi dual-mode handsets, private base stations with cellular single-mode handsets, or mobile virtual private networks (VPNs).
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Woffice comes with several built-in demos that you can install in one single click. You can test the available demos here and feel free to challenge any presented feature.