Defines a protocol for the transport of commands and data over high performance serial bus, as specified in American National Standard for High Performance Serial Bus, ANSI/IEEE1394-1995. The transport protocol, Serial Bus Protocol 2 or SBP-2, requires implementations to conform to the requirements of the aforementioned standard as well as to International Standard for Control and Status Register (CSR) Architecture for Microcomputer Buses, ISO/IEC 13213:1994, and permits the exchange of commands, data and status between initiators and targets connected to Serial Bus.