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Private Branch Exchange

Private Branch Exchange (PBX) is a telecommunications switching system that serves a private network organization and concentration points which permits the shared use of these lines between all stations in an organization.


How Bandwidth is Involved with PBX

Bandwidth does not typically interact directly with PBXs. A customer often has a Session Border Controller (SBC) between their PBX and Bandwidth.


Where We Talk About PBX

On our site

  • Bandwidth SIP Trunking
  • SIP as a Standard?
  • In our downloads

  • SIP Trunking FAQ


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    Our lawyers have asked us to remind you that, in the event of any conflict between these defined terms and the defined terms included in any agreement between you and Bandwidth, the agreement controls.

    “Bandwidth” refers to Bandwidth Inc. and/or CLEC, LLC.