Using XTI functions instead of NCBs

Both XTI and PC NetBIOS provide an interface that user-level applications can use to access the services of a NetBIOS transport provider. XTI uses a set of C language function calls, whereas PC NetBIOS uses Network Control Blocks (NCBs) and the DOS interrupt mechanism. Because the interfaces are not tied to the protocols that implement them, you can write some parts of your application using one interface and other parts using the other. For example, the client portion of an application can be written for a DOS machine using NCBs, while the server portion can be written for a UNIX system using XTI. As long as the same underlying transport (for example, SCO TCP/NetBIOS or NetBEUI) is used on both the client and the server, the client and server will be able to communicate with each other.