What is the difference between IP PBX system and traditional PBX?
The Public Switched Telephone Network (PSTN) is the traditional phone network. Traditional PBX systems are analog whereas VOIP PBX systems are digital. Digital systems have many advantages over analog, including the ability to transport voice and data transmissions over the same line . VoIP uses a Session Initiation Protocol (SIP) over the same Internet path that you use to view web pages. VoIP goes far beyond traditional PBX to offer a variety of IP-based functionality, scalability and geographical coverage for increased business flexibility at affordable costs.