Business Telephone System refers to any multiline systems that are used in business settings. These can range from small key systems to large-scale, private branches. These systems are very different from using a phone with more than one line because the lines are accessible via multiple stations or phones within the system. These moreover allow for features such as call handling. Other classifications for these also include private branch exchanges, key systems as well as hybrid systems.
The key system was initially distinguished from PBX, private branch exchange, because it permitted the user to see and even control calls. This can be done manually or directly by use of light line buttons. The two key main key system kinds: electromechanical shared-control and electronic shared-control.
PBX was traditionally more like public phones. This is because the calls were routed to the correct party through direct dialing. This setup is more common in these days, although it is more difficult to draw out the technical differences between these various phone setups.
Exchanges of this sort are carried out privately, usually at a specific business or office. This is not the same has having just one common carrier that provides services to multiple businesses and the general public. This kind of setup may also be considered EPABX, electronic private automatic branch exchange or PABX, private automatic branch exchange. PBX is utilized to connect to internal stations of organizations that are private. However, it can also be access public networks through trunk lines. The word extension applies to the end points of a branch.
Some of the many components available through this exchange setup: power, logic, control and switching cards; microcontrollers or microcomputers; internal switching networks; telephone stations or sets; interconnecting wiring; and much more. The systems use a dial plan. This means that users must dial an escape code in order to connect to outside lines and dial a number that is external. Some of the modern models do not require dial plans.
It is not common for these to be used in home setting. This is because there is not a large need. With that said, there are some cases in which they may be applied residential, for instance: those who operate small businesses from home. Both large and small organizations have a great need for complex setups because a high volume of outbound and inbound calls occur daily.
These are important in business settings to regulate the flow of calls and communication. There are many functions that are involved with both PBX and key system units. These might allow for popular capabilities, such as: conference calls, call waiting, transfers, forwarding, auto dialing, blocking, auto ring back, interactive voice responses, custom greetings, speed dialing, and many more. Still, the main call-processing duties of PBX are establishing the connections, maintaining, disconnecting, and then giving information for accounting reasons, for instance: metering calls.
A business telephone system is one that is used in most in business environments. These setups differ greatly, but are mainly used for the purpose of taking inbound calls and sending outbound calls. Generally they are private and may be used on a small or large-scale. They work by allowing various stations to access the multiple lines. The setups permit for a variety of phone capabilities.