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An encoding scheme that converts each 8-bit byte into 10 bits. Used to balance 
ones and zeros in high-speed transports.

A 24-bit or 8-bit value used to identify the source or destination of a frame.

Arbitrated Loop Physical Address; a unique 8-bit value assigned during loop 
initialization to a port in an arbitrated loop.

An address identifier recognized by a port in addition to its standard identifier. An 
alias address identifier may be shared by multiple ports.

An AL_PA value recognized by an L_Port in addition to the AL_PA assigned to 
the port. See also AL_PA.

A fabric software facility that supports multicast group management.

American National Standards Institute; the governing body for fibre channel 
standards in the U.S.A.

Application Programming Interface; defined protocol that allows applications to 
interface with a set of services.

A shared 100 MBps fibre channel transport structured as a loop. Can support up 
to 126 devices and one fabric attachment. See also Topology.

Application Specific Integrated Circuit.

Asynchronous Transfer Mode; a transport used for transmitting data over LANs 
or WANs that transmit fixed-length units of data. Provides any-to-any 
connectivity, and allows nodes to transmit simultaneously.

Arbitration Wait Time-out Value; the minimum time an arbitrating L_Port waits 
for a response before beginning loop initialization.

The total transmission capacity of a cable, link, or system. Usually measured in 
bps (bits per second). May also refer to the range of transmission frequencies 
available to a network. See also Throughput.

Buffer-to-buffer credit; the number of frames that can be transmitted to a directly 
connected recipient or within an arbitrated loop. Determined by the number of 
receive buffers available. See also Buffer-to-buffer Flow Control, EE_Credit.

The disparity at the transmitter or receiver when the special character associated 
with an ordered set is encoded or decoded. See also Disparity.

Bit Error Rate; the rate at which bits are expected to be received in error. 
Expressed as the ratio of error bits to total bits transmitted. See also Error.

As applies to fibre channel, upper-level application data that is transferred in a 
single sequence.