1.4 Relationship to Other Protocols
The Remote Assistance Initiation Protocol relies on the OLE Automation Protocol [MS-OAUT], the Distributed Component Object Model (DCOM) Remote Protocol [MS-DCOM], and on the Microsoft remote procedure call (RPC), as specified in the Remote Procedure Call Protocol Extensions [MS-RPCE].
The Remote Assistance Protocol [MS-RA] is dependent on both the Remote Assistance Initiation Protocol and the Remote Desktop Protocol: Basic Connectivity and Graphics Remoting [MS-RDPBCGR].
The following diagram illustrates the relationships between the preceding protocols.

Figure 1: Relationships between protocols