Step 3: Update the X.25 NPSI server configuration data set

A sample configuration data set provided in SEZAINST(X25CONF) gives examples of how to define a public network connection, a Defense Data Network connection, and a private point-to-point connection to a router. Copy this sample to the data set that the //X25IPI DD statement points to in your X.25 NPSI cataloged procedure. Update this sample to define your X.25 connections by using the statements listed in X.25 NPSI server configuration statements in z/OS Communications Server: IP Configuration Reference.

Each connection must have a LINK and at least one DEST statement. Optionally, you can take any of the following actions:

Define hunt groups, fast connects, and call handling options for each link
Define global options such as trace levels to clear inactive connections
Define the buffer size to use for IP datagrams

You can find complete syntax for each of these statements in z/OS Communications Server: IP Configuration Reference.