What is the process by which Nx Server delivers a camera's video stream to Nx Desktop?

As a general answer, the shortest route from the Client to the Mediaserver with the target Camera is always used. And a route of any length (via Mediaservers in the Site) is supported.

Let's say there are 2 Mediaservers in a Site - Mediaserver 1 and Mediaserver.

Now let's say a user is connected into the Site via Mediaserver 2 (User2's Desktop Client -> Mediaserver 2) and wants to view a live stream from a camera on Mediaserver 1 via a Desktop Client. 

Scenario 1 - Client has direct network access to a Mediaserver hosting target Camera.

• User2's Desktop Client pulls the stream directly from the Mediaserver 1 on the same Local Area Network.
• User2's Desktop Client pulls a stream from the Nx Cloud (or forwarded port) via Internet connection.

Information Flow in Scenario 1: Camera → Mediaserver 1 → Nx Desktop Client

Scenario 2 - Client does not have direct network access to Mediaserver hosting target camera.

• A Site has multiple Mediaservers and only one Mediaserver has Internet Access and Client is connecting over the Internet.

Information Flow in Scenario 2: Camera → Mediaserver 2 (not accessible via Internet, but accessible to Mediaserver 1) → Mediaserver1 (accessible via Internet) → Nx Desktop client