What does PBX mean?

VoIP Terminology

PBX stands for Private Branch Exchange. A PBX is a computer that runs a business phone system. Most businesses use hosted PBXs because PBXs are complicated, expensive, and require special technical expertise. Hosted PBX means that the PBX is administered and maintained by the Hosted PBX provider. Most business VoIP providers offer Hosted VoIP PBX.