3.2.4.3 Initializing Asynchronous RPC Notifications

The client SHOULD<19> support the use of asynchronous RPCs as means to notify the client of pending notifications. To initialize asynchronous RPC notifications on the server, the client sends the EcDoAsyncConnectEx method, as specified in [MS-OXCRPC] section 3.1.4.4, followed by the EcDoAsyncWaitEx method, as specified in [MS-OXCRPC] section 3.3.4.1. For more details about sending these two methods, see section 3.2.5.2 and section 3.2.5.3 respectively.