PBX is what interlink all the phone lines or extensions within a building or office and connect it to the PSTN. The system will automatically select available line for outgoing call. EPBX on the other hand does not have any difference with the PBX system. The term PBX has just evolve from the the term EPBX and is highly recognized globally.
If you mean EPABX then it stands for Electronic Private Automatic Branch Exchange.
All the 3 acronyms kind of denote the same thing ... as the terms are redundant or taken for granted PBX: Private Branch Xchange PABX: A=Automatic (made sense when there were manual ones) EPABX: E=Electronic (made sense when there were mechanical ones)
Electronic Private Automatic Branch Exchange more commonly called just PBX (private branch exchange).
interconnect the different calls through single line
A telephone exchange serving a single organization, having a switchboard and associated equipment, usually located on the customer's premises; provides for switching calls between any two extensions served by the exchange or between any extension and the national telephone system via a trunk to a central office. Abbreviated PBX. (Sci-Tech Dictionary) For the source and more detailed information concerning your request, click on the related links section (Answers.com) indicated below this answer box.
The complete details of working of an EPABX will be too much complicated to be explained here. But I will try to explain atleast the basic fundamentals. The EPABX is an acronym of Electronic Private Automatic Branch Exchange. An EPABX has three main components (1) the analog system and analog to digital converter which is basically the various line cards and (2) the cross connection matrix which connects one call to another and (3) the control of the whole EPABX. The EPABX stand for Electronic Private Automatic Branch Exchange. which means it is an electronic exchange which is privately owned and automatic. It is also known as PBX and PABX. The first part (1) deals with the analog system i.e. your voice coming on two wires and the associated signalling. It converts the signalling as well the voice into digital and handovers to the matrix. The matrix checks for which port (the no. you dial is just a port of it) is the call meant for and digitally connects the respective port to the calling port. The call is established and held as long as you keep the receiver off hook. The third part maintains the normal functioning of the EPABX including power supply, configuration, troubleshooting and generation of various reports. This is all about EPABX in brief. Hope you got some idea.
A PBX (Private Branch eXchange) Engineer can earn between $80,000-$100,000 annually.
Businesses usually use PBX because of the many features it offers. Transferring calls between lines or to different departments. There is conference calling. There is voice mail and it keeps record of the calls.
Analog PBX is telephone system that is capable of handling calls and phone logs. Digital PBX is a system bundle with phone capabilities, fax, and other internet features. Digital PBXs are usually interfaced with computers and are internet-based.
Virtual PBX will make your life easier in many different ways. It's like a real PBX except it is virtual. Therefore it exists only online and you can't physically touch it.
IP and digital PBX may be related to each other because IP is already digital wherein it uses internet and data networks to transmit multimedia like voice, fax, message, music, etc. Some of the types of PBX systems are: Virtual PBX Phone System IP-PBX Phone System PBX Phone System You can check virtualpbxcompare.com to see provider's listing in extended table of all the feature, price and plans for their system.
It is an alternative to the traditional PBX