Seagate Fibre Channel Interface - Manual (Page 394)

380 Fibre Channel Interface Manual, Rev. D
Not Operational
A receiver or transmitter that is not capable of receiving or transmitting an encoded bit stream respectively,
based on the rules defined by FC-PH for error control. For example, FC-1 is Not Operational during Initializa-
tion.
ns
Nanosecond.
NTP
Network Time Protocol.
OESB
Originator Exchange Status Block.
OFC
Open fibre control.
Offset
Relative Offset.
OFSTP
Optical fiber system test practice.
OLS
Online primitive sequence.
Open
The period of time starting when a sequence (an exchange) is initiated until that sequence (the exchange) is
normally or abnormally terminated.
Open fibre control (OFC)
A safety interlock system that controls the optical power level on an open optical fibre cable.
Operation
A construct which may be used by a level above FC-2 and is associated with one or more exchanges.
Operation_Associator
A value used in the Association_Header to identify a specific operation within a Node and correlate communi-
cating processes related to that operation. Operation_Associator is the mechanism by which an operation
within a given Node is referred to by another communicating Node. Operation_Associator is a generic refer-
ence to Originator Operation_Associator and Responder Operation_Associator (see Process_Associator).
Operational
The state of a receiver or transmitter that is capable of receiving or transmitting an encoded bit stream, respec-
tively, based on the rules defined by FC-PH for error control. Those receivers capable of accepting signals from
transmitters requiring laser safety procedures are not considered operational after power on until a signal of a
duration longer than that associated with laser safety procedures is present at the fibre attached to the
receiver.