(1) A unique connexion to an application programme that is able to activate an LU-to-LU session without assistance from a system services control point (SSCP). An independent logical unit can be used as either a primary logical unit (PLU) or a secondary logical unit (SLU), and can have one or more active LU-toLU sessions at a time. Currently, only an LU 6.2 can be an independent LU. See also dependent logical unit.
(2) A logical unit (LU) that can both send and receive a BIND command, and which supports single, parallel, and multiple sessions.