For a long time businesses have used PBX systems to handle company voice communications. The PBX hardware device can be used for routing and distributing incoming calls from any external line to an internal line. It makes sure that a company doesn’t have to get a separate and dedicated line for each employee by making it a lot more efficient to share lines. It also permits the employees in the office to have a conversation with each other through extension numbers normally 2 or 3 digits rather than having to dial a whole phone number every time. For More information hosted pbx.