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.
- Peripheral Component Interconnect (PCI)
(1) Short for Peripheral Component Interconnect, a local bus standard developed by Intel Corporation. Most modern PCs include a PCI bus in addition to a more general ISA expansion bus. PCI is also used on some versions of the Macintosh computer. PCI is a 64-bit bus, though it is usually implemented as a 32-bit bus. […]
Short for Payment Card Industry (PCI) Data Security Standard (DSS), PCI DSS is a standard that all organizations, including online retailers, must follow when storing, processing and transmitting their customer’s credit card data. The Data Security Standard (DSS) was developed and the standard is maintained by the Payment Card Industry Security Standards Council (PCI SSC). […]
- PCI Express
(pē-sē-ī ik-spres´) (n.) An I/O interconnect bus standard (which includes a protocol and a layered architecture) that expands on and doubles the data transfer rates of original PCI. PCI Express is a two-way, serial connection that carries data in packets along two pairs of point-to-point data lanes, compared to the single parallel data bus of […]
- PCI Express x16
The PCI Express x16 graphics interface (also called PCIe x16) offers increased bandwidth and scalability over the previous AGP8X generation. PCI Express x16 allows up to 4 GB/s of peak bandwidth per direction, and up to 8 GB/s concurrent bandwidth. PCI-Express x16 is used by the Intel 915 and 925 and other chipsets which support […]
- PCI SSC
Short for Payment Card Industry Security Standards Council (PCI SSC), it is the governing organization and open forum responsible for the development, management, education, and awareness of PCI Security Standards, including the Data Security Standard (PCI DSS) and the Payment Application Data Security Standard (PA-DSS).