What Is Pbx And How Does It Work?

What used to be reserved for a large international company, in the digital age is also at the service of small and medium-sized enterprises (SMEs). Systems that facilitate the unification of communications, such as PBXs, have evolved to the point of offering advanced features at very affordable prices.

Source: https://issuu.com/executelinc/docs/what_is_pbx_and_how_does_it_work