This Recommendation1 describes a simple lightweight directory access protocol (LDAP) and ITU-T X.500 schemas to represent call forwarding and call preference information in an ITU-T H.350 directory. It is intended to represent addresses to which calls should be forwarded in the case that an endpoint does not answer a call. It can direct calls to simple ITU-T H.320@ ITU-T H.323 or session initiation protocol (SIP) addresses@ or complex forwarding schemes such as time of day preferences@ web pages@ electronic mail or other applications. Implementers should review [ITU-T H.350] in detail before proceeding with this Recommendation. The scope of this Recommendation does not include normative methods for the use of the LDAP directory itself or the data it contains. Extending the schema The callPreferences 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 callPreferenceURI.