Client/server communication with openUTM

The diagram below indicates the interfaces via which openUTM clients can communicate with an UTM server application.

Figure 2: Interfaces between openUTM server and openUTM Clients

A client with a CPI-C program can communicate both with a KDCS program unit and with a CPI-C program unit; a client with an XATMI program can only ever use an XATMI program unit as a service. A KDCS program unit is a program unit of a UTM server which contains KDCS calls.

On all platforms, the client and server can reside on the same system.

A UTM server application is always referred to below as a UTM application.