scope:

This American National Standard provides switch control for physical layer switches using the High-Performance Parallel Interface (HIPPI). a high-performance point-to-point interface between data-processing equipment. This standard does not protect against errors introduced by intermediate devices interconnecting multiple HIPPI-PHs.

The purpose of this standard is to facilitate the development and use of the HIPPI in computer systems by providing common physical switch control. The standard provides switch control structures for physical layer switches interconnecting computers, high-performance display systems, and high-performance, intelligent block-transfer peripherals. This standard also applies to point-to-point HIPPI topologies.