What is the function of LDAP integration with CUCM?

• A. To route SIP signaling directly to endpoints.
• B. To encrypt calls end-to-end.
• C. To manage voicemail storage in CUCM.
• D. To synchronize users and authentication from a directory like Active Directory.

Answer: (D)

LDAP integration with CUCM is about syncing user accounts and authentication from a directory such as Active Directory. By connecting CUCM to an LDAP directory, CUCM can pull user data (names, logon IDs, contact details) and, when enabled, validate logins against the directory. This lets users sign in with their directory credentials and allows administrators to provision and manage users centrally in the directory, with changes automatically reflected in CUCM. It streamlines onboarding, ensures consistency of user attributes, and supports centralized password and account management.

This isn’t about routing SIP signaling to endpoints, encrypting calls end-to-end, or managing voicemail storage. Those functions involve SIP routing, media encryption (SRTP/TLS), or voicemail systems, respectively.