(LU6.2) A type of logical unit that governs peer-to-peer SNA communications. LU6.2 supports general communication between programs in a distributed procesSIng environment. LU6.2 is characterised by a peer relationship between sesSIon partners, efficient use of a sesSIon for multiple transactions, comprehenSIve end-to-end error procesSIng and a generic application program interface conSIsting of structured verbs that are mapped into a product inplementation. LU6.2 is used by IBM' s TPFoperating system. [IBM Dictionary of Computing, McGraw-Hill 1993]. (1996-08-26)