TROY Group 100S manual OSF/1, Pathworks

Appendix D Glossary

OS/400

The operating system used on IBM AS/400 minicomputers.

OSF/1

DEC's version of UNIX that was originally called ULTRIX and is now called Digital UNIX. OSF/1 uses the standard Berkeley lpr/lpd procedures for printing to remote host computers and print servers.

OSI Reference Model

A seven-layer model developed by the International Standards Organization that is used as a reference for developing protocols. Since each layer performs a different function, development and debugging are simplified, and there is greater flexibility (for example, this approach allows TCP/IP to run over both Ethernet and Token Ring).

P1284

An IEEE standard that defines a high-speed bidirectional parallel printer port. P1284 ports are also compatible with the Centronics standard. There are three types of physical connectors associated with the 1284 standard: 1284A (25-pin DB25), 1284B (36-pin standard Centronics), and 1284C (miniature Centronics). pp. 1-2,2-15.

Packet

A group of data and control information that is sent over a network. Often used interchangeably with frame, although frame is normally used with lower-layer protocols like Ethernet, while packet is associated with higher layer protocols like IP and IPX.

Page Description Language

A control language usually consisting of commands embedded within a document that control the way the document will look when printed. Such commands would set the type of fonts, page margins, colors, graphics, etc. within the document.

Parallel Port

On a printer, a port that transfers data 8 bits at a time for maximum performance. The parallel port usually has a 36-pin Centronics connector.

PATHWORKS

The Digital Equipment Corporation network operating system for PCs and Macintosh computers.

PocketPro 100S Administrator’s Guide -- Document #40165-110 Rev. A D-13