In ttssh, pick "Setup", "SSH-Forwarding..." and add two lines: local port 1099 to remote port 8999, and local port 3600 to remote port 3600. Then open a browser on http://localhost:1099/mui/mui.html
This is the only way to get to the MUI on [production]. Note that sabre is running mhttpd on port 9000, but production-4 is using port 8999. [This will likely be different at your site.]
If a search engine dropped you directly into this document, you should go to the index page to find out what you're reading. This document is a record of a project from 1999-2000 -- it is not a current guide to installing any software product.