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A Virtual PBX is a private branch exchange (see PBX). That is hosted off-site and operates using an Internet connection, rather than the traditional style PSTN phone lines. A VPBX provides users with virtual numbers that can be assigned to a variety of devices. Including IP phones. Softphone clients and MAC or Android devices and others. These types of systems offer increased flexibility over a local PBX as they can be accessed over the internet by trusted peers. Instead of being locked into a LAN for service delivery.

These types of systems also offer increased value compared to a regular telephone system. They have a significantly smaller upfront cost due to not requiring as much investment in infrastructure. Reduces your reliance on third-party tech support. It also facilitates your business needs necessary for competitiveness in today’s market, by enabling your staff to work remotely and officially in business dealings.


Virtual PBX (Wikipedia)
Early 1970 Telephone Exchange model TESLA Automatic system
Early model 464G Western Electric key telephone set

A business telephone system is a multiline telephone system typically used in business environments, encompassing systems ranging in technology from the key telephone system (KTS) to the private branch exchange (PBX).

A business telephone system differs from an installation of several telephones with multiple central office (CO) lines in that the CO lines used are directly controllable in key telephone systems from multiple telephone stations, and that such a system often provides additional features related to call handling. Business telephone systems are often broadly classified into key telephone systems, and private branch exchanges, but many hybrid systems exist.

A key telephone system was originally distinguished from a private branch exchange in that it did not require an operator or attendant at the switchboard to establish connections between the central office trunks and stations, or between stations. Technologically, private branch exchanges share lineage with central office telephone systems, and in larger or more complex systems, may rival a central office system in capacity and features. With a key telephone system, a station user could control the connections directly using line buttons, which indicated the status of lines with built-in lamps.

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