A telephone switch owned privately, usually by a large company. If it owns a PBX, a company does not need to lease a telephone line for each telephone set at a site.

Small, local, telephone office - either manually or automatically operated - serving extensions in a business complex and providing access to the public domain.

A telephone switch local to and belonging to an organization other than a carrier. See also Public Switched Telephone Network (PSTN).

A smaller telephone switching system located on a customer's premises to handle switching of on-premises calls and provide a connection to the telephone company's Central Office switch. The Meridian SL-100 system is a form of “PBX”.

A private telephone switching system commonly located on the end user premises with an attendant console. The PBX is connected to a common group of lines from one or more central offices to provide service to a number of individual phones

A subscriber-owned telecommunications exchange that usually includes access to the public switched network. A private telephone switchboard that provides on-premises dial service and may provide connections to local and trunked communications networks. A PBX operates with only a manual switchboard; a private automatic exchange (PAX) does not have a switchboard, a private automatic branch exchange (PABX) may or may not have a switchboard.

PBX is the designation for an inter-company/inter-office telephone system.

A telecommunications switch at the customer's site that typically handles the internal telecommunications needs of a large organization.

1. n. An automatic or manual private telephone exchange for transmission of calls to and from the public telephone network. 2. n. A switching system located on a customer's premises that consolidates the number of inside lines (extensions) into a smaller number of outside lines (trunks). Many PBXs also provide advanced voice and data communication features.

A telephone exchange located at a user's premise that provides switching services for local extensions as well as access to the public switched telephone network. (source)

A device located at a customer's site that switches incoming calls to extensions within that site. A PBX can be used to implement direct inward dialing.

(PBX) A private telephone exchange.

(PBX): A telephone switch placed on a customer’s premises and used to connect telephone calls around an enterprise (over what are called station lines) or to the outside public switched telephone network (PSTN) (over what are called trunk lines). The PSTN relies on telephone switches that are shared or, in a sense, public.

A telephony/data switching system, usually located on customer premises and belonging to the user. In contrast to Centrex which is largely located on the common carrier's premises. Some modern PBXs provide effective switched digital interfaces for operation of switched 64/56 Kbps and ISDN videoconferencing. Some contemporary PBXs also provide VoIP encoding for VPN communications between an organization's offices.

A term used synonymously with Electronic Private Automated Branch Exchange (EPABX) and Private Automated Branch Exchange (PABX). Similar to a central office exchange but smaller. A central off exchange can accommodate 10,000 subscribers. PBX systems are typically designed to accommodate from 20 to 10,000 subscribers or station. See CENTRAL OFFICE.

A telephone switch which is installed at the customer premises. Many PBX systems can carry computer data without the use of modems.

A PBX is a private telephone switch that provides switching (including a full set of switching features) for an office or campus. PBXs often use proprietary digital-line protocols, although some are analog-based.

a private telephone network used within an enterprise in which users share a certain number of outside lines for external telephone calls

a private telephone system for organisations

PBX systems are private local telephone systems that connect the PSTN with nodes in a specified geographic area (building, corporate campus, etc.). PBX systems contain switches and advanced call processing features such as speed dialing, call transfer and voice mail.

A PBX is a premises switching system, serving a commercial or government organization, and usually 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.

A private telephone exchange connected to the public telephone network on the userÕs premises. A PBX provides a circuit switching facility for telephones on extension lines within the building and access to the public telephone network.

A user owned, customer-premise located telephone exchange that connects a customer location with the PSTN.

Small switching system located at a private company or subscriber that interconnects multiple phone sets into the public switched network via consolidated higher speed trunk lines.

is a telephone switchboard designed for private use (as opposed to a "central branch exchange" used in telephone company offices).

Private Branch Exchange is a switch used inside a private business as opposed to one serving the general public. PBX systems contain small switches and advanced call processing features such as speed dialing, call transfer, and voice mail. PBX systems connect local telephones ("stations") with each other and to the public switched telephone network (PSTN). Most systems require dialing 9 to get an outside line.

A special purpose computer that controls telephone switching at a company site.

Short for private branch exchange, a private telephone network used within an enterprise. Users of the PBX share a certain number of outside lines for making telephone calls external to the PBX. Most medium-sized and larger companies use a PBX because it's much less expensive than connecting an external telephone line to every telephone in the organization. In addition, it's easier to call someone within a PBX because the number you need to dial is typically just 3 or 4 digits. A new variation on the PBX theme is the Centrex, which is a PBX with all switching occurring at a local telephone office instead of at the company's premises.

A private telephone switching system, either manual or automatic, usually serving an organization, such as a business or government agency, and usually located on the customer's premises.

A private phone switch used within a company that allows inter-company phone calls without using outside lines. It also connects to one or more outside...

A telephone switching system, located on a call center's premises, that transmits calls to and from the public telephone network. Many PBXs provide advanced telephony and data communication features.

Telephone service provided for a customer's use consisting of central office trunks, a switchboard and extension telephones which may be interconnected with the trunks or with each other through the switchboard and associated equipment. PBXs may be manual or dial, depending on the method used by extensions to place incoming or outgoing calls.

A switching system located on a customer's premises that concentrates the number of inside (extension) lines into a smaller number of outside (trunk) lines. Many PBXs also provide advanced voice and data communication features. Contrast with computerized branch exchange (CBX).

A switching system located on a call center's premises that concentrates the number of inside lines into a smaller number of outside lines (trunks). Many PBXs also provide advanced voice and data communications features.

A PBX exists as a premises switching system. This serves as a commercial or a government organization. It is usually located on that organization's premises. These PBXs provide telecommunications services on the campus or premises, (for example; internal calling and also other services)They also provide access to both private and public telecommunications network services.

PBX is a private telephone switching system, usually located on a customer's premises with an attendant console. It is connected to a common group of lines from one or more central offices to provide service to a number of individual phones, such as a hotel, business, or government office.

(PBX) A system that can transfer each line separately within an organization with only one direct line hook-up to a central office. An organization must have at least 50 lines for a PBX to be economical.

With a PBX you usually use a single-line phone and have to dial 9 to get dial tone. Incoming calls usually go to a receptionist or operator, who transfers the call to the appropriate person.

See PBX.

A very small, specialized switch similar that permits attached telephones to call each other using shorter numbers, and requires the caller to select an "outside line" in order to call through the PSTN.

A telephone system located at a customer's site that handles incoming and outgoing calls. ACD software can provide PBXs with ACD functionality. Also called private automatic branch exchange (PABX).

(PBX) - A private telephone network. Users of a PBX can share a limited number of outside lines to make and receive calls on various lines within the PBX.

An automatic telephone switching system that enables users within an organization to place calls to each other without going through the public telephone network. Users can also place calls to outside numbers.

Private Branch eXchange (PBX) is a telephone switch providing speech connections within an organization, while also allowing users access to both public switches and private network facilities outside the organization. The terms PABX, PBX, and PABX are used interchangeably.

A switching device owned by a customer (rather than the telephone company) to route internal calls among various extensions, to switch incoming calls to the appropriate extension and to route outgoing calls to the public telephone network access point.In hotels, the center where internal telephone operators are stationed and incoming and outgoing calls are redirected.

A Private Branch eXchange (also called PBX, Private Business eXchange or PABX for Private Automatic Branch eXchange) is a telephone exchange that serves a particular business or office, as opposed to one a common carrier or telephone company operates for many businesses or for the general public.