Chapter 7 of the MIH standard defines the primitives that should be supported by an implementation. These primitives show how a SAP can interact with a MIHF.

Chapter 8, of the same standard, defines the message MIH protocol messages for remote communications (communications between MIHFs).

The ODTONE implementation uses the messages defined on chapter 8 to implement the primitives of chapter 7.

Please note that the MIHF sends confirm messages to the MIH-Users and response messages to the remote MIHFs. The MIH protocol allocates 16 bits for the MIH message ID, where two of those bits are for the opcode. The opcode defines if a message is a request, response or indication. So, with 2 bits we can encode four values, where three are already taken. This leaves 1 available combination for the missing confirm primitives. Confirm primitives set the opcode to 0 (zero).