from The American Heritage® Dictionary of the English Language, 4th Edition

  • abbr. private branch exchange

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • private branch exchange


Sorry, no etymologies found.


  • An organization's investment in PBX and e-mail systems could have a big influence, it says.

    Survey: Costs of Office Communications Server too great for some organizations

  • The Private Branch eXchange (also called PBX or Private Business Exchange) is a telephone switching center that is owned by a private business, compared to one that is owned by the common carrier or telephone company.

    Softpedia - Windows - All

  • A Linux server running a PBX is a capability of creating infinite user extensions.


  • Someone needs to be in the building, and someone needs to call a PBX maintenance person.

    PHONE+ Site Wide Content Feed

  • The need for VoIP solutions for business use is growing, and Achab is responding to that need with an entirely software-based IP PBX, which is secure, robust, and has all the features a business needs.

    Press Releases

  • This self contained matched set -- includes: 4 line, 24 extension PBX which is now expandible to 8 lines and or 32 extensions with optional line and extension cards.

    Wil's Ebay E-Store

  • When it comes to interfacing Exchange to the world of telephony (via Microsoft Office Communication Server, or some kind of PBX), the planning often requires in-depth ...

    Megite Technology News: What's Happening Right Now

  • Cisco to ship Wi-Fi cordless phone in June: The Cisco phone requires some kind of PBX (phone exchange), but it's unclear from any of the articles I've read whether there's a gateway box you need to interface with specific PBX models.

    Wi-Fi Networking News

  • - Communications systems used by enterprises, large and small - what has traditionally been called the "PBX" but that term is increasingly meaningless given the range of options now being provided.

    Disruptive Telephony

  • Preferably this call management should be handled without any human intervention; over the past twenty or more years this has resulted in the evolution of increasingly effective Private Branch Exchange ( "PBX") offerings from telecomm equipment suppliers.

    Skype Journal


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