The 3 Major Types of Phone Systems

• PBX On-Premise
• VoIP PBX
• Hosted VoIP Phone Device

PBX On-Premise

An on-premise PBX system is a closed-off network of phones within a business that has all equipment on-site. All wiring and hardware, such as the PBX server, are located within the company building.

VoIP PBX

VoIP PBX also referred to as IP PBX, is a business telephone system that transmits phone calls over an IP network rather than through PSTN (Public Switched Telephone Network), or the traditional circuit-switched telephone network. VoIP PBX can be deployed on-premises or in the cloud (cloud-based PBX or hosted PBX).

Hosted VoIP Phone Device

What is a hosted phone system? A hosted phone system is a Private Branch Exchange (PBX) that uses Voice over Internet Protocol (VoIP). Hosted in an off-site data center, rather than on-site, this IP phone system works over the internet. You can easily make inbound and outbound calls in or outside the office.