A private branch exchange (PBX) is a telephone exchange that serves a particular business or office, as opposed to one that a common carrier or telephone company operates for many businesses or for the general public.

PBX a private telephone network used within an enterprise. Users of the PBX share a certain number of outside lines for making telephone calls external to the PBX.

Most medium-sized and larger companies use a PBX because it's much less expensive than connecting an external telephone line to every telephone in the organization. In addition, it's easier to call someone within a PBX because the number you need to dial is typically just 3 or 4 digits. A new variation on the PBX theme is the central which is a PBX with all switching occurring at a local telephone office instead of at the company premises.

A software-based IP PBX that replaces a traditional hardware PBX. 3CX's IP PBX has been developed specifically for Microsoft Windows and is based on the SIP standard, making it easier to manage and allowing you to use any SIP phone (software or hardware). The 3CX IP PBX offers numerous benefits.

No need for separate wiring – phones use computer network Easier to install & manage via web-based configuration. A software IP PBX is less expensive than a hardware. PBX Move employees' offices without changing wiring or 3CXUtilize any SIP phone instead of being locked into one vendor. Save on call costs using any SIP VOIP service or WAN

Receive & Make calls via existing phone lines using VOIP Gateways

Now using our Hosted PBX Phone System you can have all of the features of the best telephone and voice mail systems, with no equipment to buy, maintain or outgrow. Ours is a hosted PBX system, wherein the equipment is maintained by us. All the advanced functionality of a standard PBX system are provided to you as a service through our hosted server. Hence this system is also often referred as a virtual phone PBX system.
The main purpose of all telephony functions is to allow for clear and efficient communications. Over the years, telecommunications devices for businesses expanded from individual desk phones to a central switchboards within businesses that routed calls manually to the PBX phone systems that had the capacity to route calls coming into the business. While for many years this meant the establishment of a large amount of equipment on the company premises, the hosted PBX phone systems of today require minimal equipment, a connection to the World Wide Web via a wireless or wired service provider, and some simple programming.

One particular form of hosted PBX phone systems is the Private Branch exchange. Sometimes referred to as an Electronic private Automatic Branch Exchange, this system does not rely on switching equipment that is provided or operated by a common telecommunications carrier. Instead, the system is self-contained and is devoted specifically to one subscriber. This form of the hosted PBX can be maintained on the company site or operated by independent IT firms that supply the dedicated service to the company.