Types of commercial phone systems

There are three major types of commercial phone systems on the market today: key systems, Private Branch Exchange (PBX) systems, and KSU-less phones. The type of system you choose will depend on how many stations (extensions) you need and what features you require.

A fourth type of phone system uses Voice over IP (VoIP) technology to route your internal calls over data networks, instead of traditional phone lines. For some businesses, VoIP systems can provide significant cost savings and other benefits.