Definitions

1. noun

A private branch exchange, a telephone exchange that serves a particular business or organization.

“The company installed a new PBX system to manage their phone calls more efficiently.”

2. proper noun

A specific brand of private branch exchange, such as a Cisco PBX or Avaya PBX.

“The company uses a Cisco PBX system for their phone network.”

3. verb

To connect a telephone to a PBX system, typically for business use.

“The IT department PBXed all the phones in the office building.”

4. verb

To exchange or connect a telephone to a PBX system, typically for business use.

“The IT department will PBX the new employee’s phone on Monday.”