When an Expressway-E is configured for static NAT, which Session Description Protocol attribute is modified to reflect the NAT address?

What is a description of an Interactive Connectivity Establishment?

Which service is available in a cloud-based deployment using Cisco Webex Messenger?

An administrator has been asked to configure Video Mesh signaling traffic to route through a proxy.
Which is an available proxy type in the Video Mesh node configuration to support this deployment model?

Refer to the exhibit.

An ISDN gateway is registered to Expressway-C with a prefix of 9 and/or it has a neighbor zone specified that routes calls starting with a 9.
Which value should be entered into the "Source" field to prevent toll fraud regardless at origin of the call?