The purpose of this document is to provide an introduction and overview of the ARINC 628 series of Specifications. ARINC 628 defines equipment and installation standards for cabin equipment, which is generally defined as communication and entertainment equipment designed for passenger use. Part 0 provides the concepts and overview of ARINC 628 and descriptions of each individual part. Appendix B is written in briefing chart format to facilitate the understanding of high-level objectives. Supplement 4 represents a summary of recent changes to Parts 1 through 9 of ARINC Specification 628.