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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.

Do you want to know how to expand your business from your telephone lines? Continue reading this guide in which you will find the best guide to private branch exchange systems.

What is PBX

It is a private telephone exchange that connects directly with a public one through analog trunk lines in order to manage internal and external calls autonomously. This device is owned by the company that has implemented it.

Once familiar with the meaning of the acronyms, it is easier to know what PBX consists of. It is a system that allows the management and administration of telephony within your private company, that is, the entry, distribution and exit of calls made within it.

The main advantage of the VOIP Phone System is that it is a technology that uses the Internet either through LAN networks or WAN networks as the main way to make phone calls. Therefore, the voice is going to be digitized and will later be transmitted in the form of digital data packets.

With the use of this platform, it is possible to use softphones, IP telephones or conventional telephones. It all depends on the equipment manufacturer. They work just like traditional phones but with updated features and greater functionality.

Characteristics of PBX

It is currently one of the main features, incoming calls can be arranged flexibly. The different extensions, recorded messages or voice mailboxes are directed by means of menus. This gives your company the creation of a good image.

● Automated attendant

Just as technology advances, new ways of communicating also advance. Features and functions are added progressively. These types of telephone switchboards are capable of creating an efficient environment in your company, allowing you to centralize communications and take them to global levels, integrating all kinds of locations, hence the ubiquity of the system. For this reason, we are going to highlight some characteristics of PBXs

● Call forwarding

Thanks to the appearance of mobile telephony, this classic has reached greater value, allowing our extension to travel anywhere with us.

● Call hold

It is one of the features that can be used to manage several incoming or outgoing calls at the same time.

● Video calls

For some companies it is a must-have feature. It can be three or more bands, it can have internal extensions and external numbers at the same time.

● Automatic call routing

Those who have been using automatic call routing properly have saved time and money and are experiencing a great evolution due to VoIP.

How does it work?

As we already know, the virtual PBX is a private telephone system that, without the need for physical equipment or installations, is inserted into your company to facilitate communication between people inside and outside of it. It works as follows:

● Incoming traditional PBX calls:

This type of system allows the transfer of calls from a public switched telephone network to a private one of the same style. Incoming calls are routed through a switched system to a private number telephone within the same system.

● Traditional outgoing PBX calls:

Internal telephones on this type of network must enter a code, which is usually 0 or 1, in order to gain access to an external line. Once the private line has established the connection with the external line, the user can make the call normally.

● Internal PBX calls:

The difference of the virtual pbx is that the calls are made through internal private telephone lines and through switches. It should be noted that they work in the same way as the private lines of a traditional network.

● Traditional PBX technology:

Traditional systems started with analog technology and had a limited number of phone lines. Over time they have been supplanted by digital switches so they can support higher density internal, external, and long-distance telephone lines.


Now, if we add the IP protocol "Internet Protocol" with the PBX, we have as a result the IPPBX or IP/PBX which stands for "Internet Protocol Private Branch Exchange"