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Private Branch Exchange (PBX) or
Private Automatic Branch Exchange (PABX) In telephony, a PBX
system behaves as a customer’s premises over trunk lines (thus
the term branch). At first, PBX smimicked a small telephone
company switchboard. Users would use an operator to make
telephone calls to the PSTN (public switched telephone network).
Now, users dial directly, without using an operator; computer
telephony platforms such as automated attendants are able to
route incoming calls automatically, too. A PBX is a premises
switching system, serving a commercial or government
organization, and H13usually located on that organization's
premises. PBXs provide telecommunications services on the
premises or campus, (e.g., internal calling and other services),
and access to public and private telecommunications network
services. |
