Initializing MVSSERV for the TSO/E Enhanced Connectivity Facility

The TSO/E Enhanced Connectivity Facility (ECF) allows you to use IBM-supplied servers or write your own servers for use on TSO/E. The tasks you can perform using IBM-supplied server/requesters are:

Use host disk space as if it were a personal computer fixed disk
Print personal computer output on certain host printers as if they were personal computer printers
Copy files from the personal computer to the host
Execute TSO/E commands, CLISTs, and REXX execs

For more information about the servers and requesters IBM® provides, and PC configurations supported, see Enhanced Connectivity Facilities Introduction.

You can write your own servers and requesters to provide additional host services to PC users. You can provide any service that is available to a problem program on MVS™. Your servers are restricted only by MVS and PC resources, and by conventions used in the requester program. For information about writing and installing your own servers on TSO/E, see . That document describes how to:

Supply and initialize the input parameter data set for MVSSERV
Supply diagnostic data sets for MVSSERV
Write and package the servers and their initialization/termination programs
Install the servers, initialization/termination programs, and access method drivers

With ECF, you can customize the way in which servers and requesters communicate. MVSSERV includes programs called access method drivers, which manage communications with PCs attached to the host through an IBM 3174 or 3274 control unit in Distributed Function Terminal (DFT) or Control Unit Terminal (CUT) mode. MVSSERV also provides an interface that lets you write and install other access method drivers to support other modes of host-to-PC attachment. For example, you could write an access method driver that supports a phone connection between the host and a PC, allowing a PC user to access host services by phone.

For information about writing and installing access method drivers, see .