# Setup functions

Use the following functions to set up the H.324M Middleware and set up calls:

Function | Description
h324Initialize | Sets up the H.324M Middleware for use.
h324SetAudioTxPayloadId | Sets the audio RTP payload ID in the transmit direction.
h324SetupCall | Informs the H.324M Middleware that it can begin H.245 negotiations when it is ready.
h324Start | Creates an H.245 stack for the specified MUX endpoint and sets the initial values that are needed to begin an exchange with the client.