See SCSI Addressing.

( IP) The numerical designation of a network node. Under IP version 4 ( IP v4), this is a 32-bit number, usually written as four byte values separated by periods (for example, 127.0.0.1). Under IP version 6 ( IP v6, the next generation of IP), this will be a 128-bit number.

An address consists of one of the following. @label(c) @label where ``label'' is a label, and c some valid channel number, depending upon context. If the channel number (c) is missing, then all current input files are searched for the label. If the label part is missing, the beginning of the file linked to the channel number is assumed.

a ten digit number that looks like an ordinary telephone number

A number or combination of numbers and or letters used to designate a specific storage slot.

The ID number of a target or host on the SCSI Bus. Must be between 0 - 7, and no two devices can have the same ID number.