/mcpThe voicemail passwords used to access Unity Connection voicemails from telephone user interface (TUI) are authenticated against the Unity Connection database. The passwords or PINs can be managed using phone interface or Messaging Assistant web tool. The administrator account that is used to sign in to Cisco Unified Operating System Administration, Disaster Recovery System, and the command line interface cannot be configured for LDAP integration. Note Procedure Step 1 In Cisco Unity Connection Administration, expand System Settings > LDAP and select LDAP Authentication. Step 2 On the LDAP Authentication page, do the following steps (For information on each field, see Help> This Page): a) Check the Use LDAP Authentication for End Users check box. b) Enter the values in all other fields. c) If you change the value of the Host Name or IP Address for Server field and if the IMAP clients are accessing Unity Connection, you need to restart the Unity Connection IMAP Server service. If other web applications are accessing Unity Connection, restart the server. d) If you uploaded SSL certificates to the Unity Connection server in the Uploading SSL Certificates in Unity Connection, page 12-5 section, check the Use SSL check box. Step 3 Select Save. Selecting the LDAP Users to Import into Unity Connection Consider the following points when importing LDAP user accounts into Unity Connection: • Before importing users into Unity Connection, check the LDAP directory that integrates with Unity Connection. • You can create up to 20 LDAP directory configurations to specify the users in the LDAP directory you want to import into Unity Connection. For each LDAP directory configuration, specify a user search base in which Unity Connection should search for user accounts. • Unity Connection imports all users that belong to the specified user search base, such as domain or Organization Unit in an LDAP directory tree. A Unity Connection server or cluster can only import LDAP data from subtrees with the same directory root, for example, from the same Active Directory forest. • After creating the LDAP directory configurations, synchronize Unity Connection data with data in the LDAP directory to import the LDAP data in to the Unity Connection server. The practical limit of users that can be imported into the Cisco Unified CM database is 120,000. The limit is not enforced by the synchronization process but importing a large numbers of LDAP users who do not become Unity Connection users. This reduces the amount of disk space available for messages and slows down the database performance causing the upgrades to take longer. System Administration Guide 160 LDAP Selecting the LDAP Users to Import into Unity Connection