As a voice engineer, which two recommendations do you make to your company to optimize Cisco Unified Communications Manager configuration to reduce the number of toll fraud incidents? (Choose two.)

AN administrator needs to help remote employee make a free call to an international destination.
The administrator calls the employee, then conferences in the international party. The administrator drops the call, and the employee and the international party continue their conversation. Which action prevents this type of toll fraud in the Cisco USM?

Which two features of Cisco Prime Collaboration Assurance require advanced licensing?
(Choose two.)

A customer has Cisco Unity Connections that is integrated with LDAP. As a Unity Connection administrator, you have received a request to change the first name for VM user. Where must the change be performed?

Refer to the exhibit.

What is a possible cause of the PRI issue?