Pbx Internal Switching Network

The initials pbx stand for private branch exchange a very old.

Pbx internal switching network. The central office lines provide connections to the public switched telephone network pstn and the. What is a ip pbx. Also known as a pbx unified communications system or business phone system a pbx acts as the central switching system for phone calls within a business. A private branch exchange pbx is a telephone system within an enterprise that switches calls between users on local lines while enabling all users to share a certain number of external phone lines.

In contrast to a public switched telephone network the main purpose of a pbx is to save the cost of requiring a line for each user to the telephone company s central office. Pbx stands for private branch exchange which is a private telephone network used within a company or organization. Ip pbx systems handle internal traffic between stations and act as the gatekeeper to the outside world. A pbx is made up of both hardware and software that connects to communication devices such as telephone adapters hubs switches routers and telephone sets.

A pbx is a telephone exchange or switching system that serves a private organization and permits sharing of central office trunks between internally installed telephones and provides intercommunication between those internal telephones within the organization without the use of external lines. A traditional standard pbx is a physical on site switching system that performs these central functions and hooks up to the public switched telephone system pstn.