PBX


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PBX

(communications)

private branch exchange (PBX)

A private telephone switching system located on the customer’s premises, usually serving an organization (such as a business or government agency). It switches telephone calls within a building and also to an outside telephone network.

PBX

PBX

(Private Branch eXchange) An inhouse telephone switching system that interconnects telephone extensions to each other as well as to the outside telephone network (PSTN). A PBX enables a single-line telephone set to gain access to one of a group of pooled (shared) trunks by dialing an 8 or 9 prefix. PBXs also include functions such as least cost routing for outside calls, call forwarding, conference calling and call accounting. Modern PBXs use all-digital methods for switching, but may support both analog and digital telephones and telephone lines. See IP PBX and WPBX.


An Early PBX
This PBX began operation in Bangor, Maine in 1883. (Image courtesy of AT&T.)









A Field Switchboard
This portable commutator was a one-wire telegraphic switchboard for military field service in 1914. Made by Northern Electric (now Nortel Networks), it was one of the first communications products built for the battlefields of World War I. (Image courtesy of Nortel Networks.)
References in periodicals archive ?
PBX Hosting's expert knowledge of the platform along with a vast knowledge of networking made our decision easy, needless to say we are extremely happy with the results."
Brightlink's Cloud PBX offering can be rapidly deployed and easily scales with companies as they grow.
Thanks to what he believes will be a big first-to-market impact, the optimistic Michael thinks PBX can generate nine-figure revenue in less than two years.
where [sigma] is compression stress of the specimen (MPa), [[rho].sub.0] is ideal density of the PBX (taken as 1.88 g/[cm.sup.3] in this study), [rho] is specimen's density (1.70 g/[cm.sup.3] in this study), [[??].sub.0] is basic strain rate (taken as 1 [s.sup.-1]), [??] is loading strain rate (~700 [s.sup.-1] in this study), [[sigma].sub.0] is compression strength at the temperature of 0[degrees]C (273.15 K) and with the strain rate of 1 [s.sup.-1] (MPa, obtained by fitting experimental data), [alpha] is impact factor of density, [beta] is impact factor of strain rate, and [gamma] is cross-impact item.
The UCM6100 series IP PBX Appliance is available now through Grandstream's worldwide distribution channels.
The technology used in the solution also means that Vodacom Business Services can service multiple customers and sites as part of the same virtual PBX, allowing it to improve efficiency and lower costs.
A cloud-based PBX located off site within a secure data centre facility is not only cheaper to deploy and maintain but also provides increased resilience, contributes to Business Continuity and Disaster Recovery plans and delivers improved support for mobile users compared to a conventional telephony platform.
Comwave Hosted PBX is very compelling." Comwave Hosted PBX phone systems are managed by Comwave 24x7 on a secure private connection to ensure a high quality secure call.
Chilean Metals will be separated from PBX under the Plan of Arrangement and shareholders of PBX will maintain their ownership in PBX and also receive shares of Chilean Metals under the Transaction.
With this app, which is not locked into a particular provider or PBX, the user can choose which provider or VoIP PBX to use, and switch at any time or use different VoIP providers.
Final note: unless the business is buying an Interactive Intelligence PBX or a top-of-the-line $150,000-plus PBX from the Big Three (Avaya, Mitel ShoreTel), the company isn't getting all the functionality and features available via most hosted PBX models.
Voice mail is not included, because often the private branch exchange (PBX) phone equipment that enables options such as auto-attendants, multiple extensions off a single phone number and voice mail is so cost-prohibitive that small businesses cannot afford it.