All the advantages
of a virtual exchange (PBX)
Large-scale structures, such as hotels, large companies and other complex organisations, have always needed telephone switchboards for automatic answering, answering machines, call transfers, 24h functioning and other services. Over time, telephone exchanges have evolved. Naturally, VoIP has made a key contribution to change. Once upon a time it was necessary to have a physical switchboard; this entailed greater commitment both in terms of investments and installation costs at the location where the service was needed. All these problems are automatically overcome with virtual switchboards, also known by the acronym PBX, Private Branch Exchange, which connect telephones within a company to the traditional telephone line (PSTN).
The more specific expression IP PBX is the result of a combination of PBX and VoIP technology: the ability to exploit the IP protocol to transmit calls is the natural and most advantageous evolutionary direction of switchboards. Another advantage of a virtual exchange is that unlike traditional ones it does not prevent the potential use of new technologies, without having to deal with the classic constraints and problems that arise when technologies evolve. Traditional switchboards require the provision, operation and exploitation of all the functions listed above, of sophisticated and expensive proprietary telephones.
Another advantage of an IP PBX is the possibility of using only one switchboard for different locations. This can be particularly advantageous for businesses that have offices located in different areas, or for hotel chains or other corporate structures. Thanks to VoIP, the telephony of all offices and branches can be managed with a single switchboard and a single web interface. In traditional telephony all the telephone devices must be physically connected to the switchboard. With a VoIP switchboard, this is not necessary, as the voice is transported via an Internet connection.
Another advantage is greater scalability: any new internal numbers can be added without necessarily changing the infrastructure and without affecting the number of contracted outgoing calls. You can increase the number of incoming calls with a simple configuration, without this having an impact on the infrastructure and without installation costs.