2.1 Transport
Remote Desktop Protocol: Dynamic Virtual Channel Extension messages are passed between a DVC manager on a server and a DVC manager on a client, and are transmitted over one of the following underlying transport mechanisms:
A static virtual channel ([MS-RDPBCGR] sections 1.3.3 and 2.2.6), where the name of the channel is the ANSI character string "DRDYNVC" and bulk compression is enabled.
A lossy or reliable UDP multitransport connection ([MS-RDPEMT] sections 1.3 and 2.2.2.3).
The Remote Desktop Protocol: Dynamic Virtual Channel Extension does not establish any transport connections.