PBX (Private Branch eXchange)
A PBX is a telephone exchange that serves a particular organization or office, as opposed to one that a common carrier or telephone company operates for many businesses or for the general public. PBXs are also referred to as:
* PABX - Private Automatic Branch eXchange
* EPABX - Electronic Private Automatic Branch Exchange
 PC Anywhere
PC Anywhere is a computer program by Symantec which allows the user(s) to connect to their PC from other PCs around the world, using an Internet connection. Also makes it possible to work across multiple platforms, such as Microsoft Windows, Linux, Mac OS X, and Pocket PC.
 PDF (Portable Document Format)
PDF is a file format used for representing two-dimensional documents in a device independent and display resolution independent fixed-layout document format. Each PDF file encapsulates a complete description of a 2D document that includes the text, fonts, images, and 2D vector graphics that compose the document. PDF is an open standard.

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