This Recommendation1 describes a lightweight directory access protocol (LDAP) schema to represent ITU-T H.235 elements. It is an auxiliary class related to [ITU-T H.350] and derives much of its functionality from that architecture. Implementers should review [ITU-T H.350] in detail before proceeding with this Recommendation. Its attributes include ITU-T H.235 identity@ password and certificate elements. These aliases can be downloaded to an endpoint for automatic configuration or accessed by a gatekeeper for call signalling and authentication. The scope of this Recommendation does not include normative methods for the use of the LDAP directory itself or the data it contains. The purpose of the schema is not to represent all possible data elements in the ITU-T H.235 protocol@ but rather to represent the minimal set required to accomplish the design goals enumerated in [ITU-T H.350]. Extending the schema The h235Identity classes may be extended as necessary for specific implementations. See the base [ITU-T H.350] for a discussion on schema extension. 1 This Recommendation includes an electronic attachment containing a text file with a schema configuration for h235Identity.