The following attributes are currently used:
cn, description, icsCalendar, icsDWPHost, icsPartition, icsStatus, icsTimezone, mail, mailAlternateAddress, uid
The following attributes are reserved but not implemented for this object class:
icsAlias, icsCapacity, icsContact, icsExtended, icsExtendedResourcePrefs, icsGeo, icsPreferredHost, icsQuota