What is Voice over Internet Protocol (VoIP)? Is a family of transmission technologies for delivery of voice communications over IP networks such as the Internet or other packet-switched networks.

VoIP Calling with SIP Account, Hosted PBX & SIP Communications Server - Octopus IP Communications

(short version) voip@demo.octopusip.com connects to the Hosted PBX and SIP Communications Server for VoIP, IM and Presence services. - sip@demo.octopusip.com logs into Octopus IP's SIP Unified Communications Webmail and calls voip@demo.octopusip.com ...

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