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

What is a valid class included in the 8-Class QoS Strategy in a VoIP network?

Which DHCP option must be set up for new phones to obtain the TFTP server IP address?

Regarding SIP integrations with Cisco Unified Communications Manager, if the Cisco Unity Connection is configured to listen for incoming IPv4 and IPv6 traffic, how should the addressing mode be set up in the Cisco Unity Connection?

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