You are manually provisioning an IP phone by using UCM Administration. You want to ensure that UCM
provides authentication and integrity for the IP phone.
Which of the following fields should you update?

A.
Device Pool

B.
Phone Security Profile

C.
MAC Address

D.
Phone Button Template

Explanation:
You should update the Phone Security Profile field to ensure that Cisco Unified Communications Manager
(UCM) provides authentication and integrity for the IP phone you are provisioning. The Phone Security Profile
field is used to create or modify the security configuration of devices to which the profile is applied.
You do not need to update the Device Pool field to ensure that UCM provides authentication and integrity for
the IP phone you are provisioning. Although required when manually provisioning an IP phone in UCM
Administration, the Device Pool field specifies a given set of characteristics that are to be applied to IP phones
within the pool, such as region, date and time groups, softkey templates, and more.
You do not need to update the MAC Address field to ensure that UCM provides authentication and integrity for
the IP phone you are provisioning. The MAC Address field contains the Media Access Control (MAC) address
of the device that you are provisioning. The MAC address is a hardware address that is assigned by the device
manufacturer.
You do not need to update the Phone Button Template field to ensure that UCM provides authentication and
integrity for the IP phone you are provisioning. Phone button templates are used to add or arrange IP phone
buttons for a given device or group of devices. You can create or edit phone button templates by clicking
Device > Device Settings > Phone Button Template in UCM. When you are manually provisioning an IP phone
in UCM Administration, you must fill in the MAC Address field, the Device Pool field, the Phone Button
Template field, and the Phone Security Profile field.

Cisco: Cisco Unified Communications Manager Phone Setup: Set Up Cisco IP Phone