1 Scope
This Recommendation | International Standard specifies the Directory Access Protocol,
the Directory System Protocol, the Directory Information Shadowing Protocol, and the
Directory Operational Binding Management Protocol which fulfil the abstract services
specified in Rec. ITU-T X.511 | ISO/IEC 9594‑3, Rec. ITU-T X.518 | ISO/IEC 9594‑4, Rec. ITU-T X.525 | ISO/IEC 9594‑9, and Rec. ITU-T X.501 | ISO/IEC 9594‑2.