Find out what is hidden behind the abbreviation PBX and where it is used here.
PBX is the short form for Private Branch Exchange, in German: a telephone system. The term is almost as old as telephony itself. In the meantime, there are extensions to digital areas, especially for companies. In this article we explain the difference between a telephone system and a single telephony device and show you the advantages and functions of a telephone system.
- PBX vs. phone
- Advantages of a PBX
- IP-PBX – the future?
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PBX vs. phone
The most obvious difference is the number of devices. With a telephone system, companies can connect a large number of devices to the public telephone network at the same time. There is also the possibility that calls can be made internally or call forwarding can be set up. Instant messaging or mobile devices can now also be integrated into a PBX. Another function that is known to many is the direct dialing, which leads you directly to the desired contact person within a company. A telephone system can either be installed locally on company-internal servers or hosted online via the cloud. Both solutions have advantages and disadvantages. With the local server, users have a high degree of control, but they also have to expect maintenance costs.
Advantages of a PBX
A PBX gives you the option of transferring the powers of individual departments in your company to the telephone. We have listed these setting options in the following table:
| Description | Authority |
| not officially authorized | External network participants cannot be contacted |
| semi-restricted | only external numbers may be called |
| local calls only | Calls within the same local network |
| cross-link entitled | Telephone calls to predefined partners |
| full-restricted | no restriction |
IP-PBX – the future?
So-called IP telephone systems use the software-based Internet protocol (short: IP). The individual end devices are no longer physically connected to each other. A practical solution, since in addition to conventional telephones (hardphones), software can also be used on the computer (softphones). This enables, for example, continuous accessibility with the same direct dialing even when on the move.
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