RFC 2251 defines LDAP v3, wherein attributes of an object are identified by a short name and an OID (object identifier). It is permissible for organisations with their own Private Enterprise OID to create attributes for their own purposes by assigning an OID from their Private Enterprise OID namespace.
The University has its own Private Enterprise OID, and hence can allocate its own LDAP attributes in directories it administers.
For more information, please contact urn-admin@strath.ac.uk.
The following registrations have been made for LDAP attributes with OIDs in the arc 1.3.6.1.4.1.7577.