Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) — Question 39

When a new SIP phone is registered to Cisco Unified Communications Manager, it keeps failing and showing an `unprovisioned` error message in the phone display. Which problem is a possible cause of this issue?

Answer options

• A. Auto-registration is disabled on the Cisco Unified Communications Manager nodes and the phone device does not have a DN configured.
• B. The DN assigned to the phone is already in use by another SIP phone.
• C. The phone cannot download and install the latest firmware.
• D. The DHCP settings are set incorrectly and the phone does not have an alternate TFTP defined.
• E. The DN configuration for this phone is shared with an SCCP phone, which is not supported.

Correct answer: A

Explanation

The correct answer, A, indicates that auto-registration is disabled and the phone does not have a DN, preventing it from registering. Option B is incorrect because the issue is not related to the DN being in use. Option C is not the cause if the unprovisioned error is shown, as it specifically pertains to registration problems. Option D may affect operation but does not directly lead to an unprovisioned state. Option E is also incorrect as it pertains to compatibility rather than the registration issue.