Complete Protocol dictionary, glossary and reference

APPC: Advanced Program-to-Program Communications

Advanced Program-to-Program Communications (APPC), a protocol roughly in the OSI presentation and session layers, is a programming interface standard in the IBM SNA system that allows interconnected systems to communicate and share the processing of programs. Originally developed by IBM as a remote transaction processing tool between Logic Units (LUs), APPC is now used to provide distributed services within a heterogeneous computing environment. APPC establishes and tears down connections between communicating programs, and consists of two interfaces, a programming interface and a data-exchange interface. The former replies to requests from programs requiring communication; the latter establishes sessions between programs.

Standard Organization

IBM

Related Document