By deploying internet telephones and a computer server running software to control telephone calls a business may enjoy all the functions of a PABX (Private Automatic Branch Exchange) telephone system without having to own a PABX. The IP telephone solution is thus a "Virtual" PABX.
A telephone system that relies on IP technology (as opposed to traditional PSTN technology) and behaves like a PBX system. Main advantage is it does not require the large capital investment up front that is normally required for PBX systems.
See IP PBX. A PBX not in your premises but on the Internet.
a full-featured telephone system to answer all calls and provide options to the caller including dial-by-extension, dial-by-name, call transfer with find-me/follow-me, voice mail, and much more
a machine that handles your telephone calls for you
an affordable alternative to the high costs of buying and maintaining a hardware-based PBX system
an affordable solution to the high costs of buying and maintaining an enterprise-wide PBX system
a solution that provides the main functions of a physical PBX, but without the need for any of the sophisticated, but very expensive, hardware to be installed in your premises
A type of private business phone system that is hosted by a third party rather than one that resides at the customerâ€(tm)s site. Versatureâ€(tm)s hosted small business communications service provides customers with a virtual PBX. See the definition of “hosted†for more detail.
Reignmaker’s REIGN-FREE service which provides all the same functionality (plus new, advanced features) traditionally derived from an on-site PBX – but delivered over the internet and housed in a secure, redundant, disaster-proof environment.
Also known as a Hosted PBX. This is a PBX (Personal Branch Exchange) that is hosted by a service provider eliminating the need the end user to purchase PBX equipment.
http://www.fonangle.com/services/hosted_pbx.php?section=services