Which Cisco Unified Communications Manager service parameter should be enabled to disconnect a multiparty call when the call initiator hangs up?

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 functionalities does Cisco Expressway provide in the Cisco collaboration architecture? (Choose two.)

When a remote office location is set up with limited bandwidth resources, which codec would allow the most voice calls with the limited bandwidth?

When a phone is registered over Mobile and Remote Access, where does it register?