In this method, communication with an OpenTP1 UAP is achieved using a message exchange configuration that uses LANs connected with the TCP/IP protocol. Messages can be sent from a CUP of TP1/Client, and messages sent from an OpenTP1 UAP (MHP) can be received via TP1/Client.

When communication is via TCP/IP, the OpenTP1 system from which a service is requested must use TP1/Message Control, TP1/NET/Library, and the TP1/NET/TCP/IP product that corresponds to the TCP/IP protocol. Figure 3-57 illustrates TP1/Client communications using MCF message exchange and the TCP/IP protocol.

Figure 3-57 TP1/Client communications using MCF message exchange and the TCP/IP protocol