The CICS Universal Client enables users to access transactions or programs on a CICS application server from a remote machine. It communicates with the CICS server via a selection of protocols (including TCP/IP, SNA, TCP62, and Local Named Pipe).
CICS Universal client is also packaged as part of IBM's CICS Transaction Gateway
The Help for CICS Universal Client is available to read online and also in their Information Center
References
CICS Universal Client Wikipedia(Text) CC BY-SA