PASSPORT PC TO HOST is powerful, Windows-based multi-host terminal emulation designed specifically for TCP/IP communication. As a result, the TN3270, TN5250 and VT100/VT220 emulation suite is fast, reliable and has a very small 5MB footprint. The Zephyr application is ideal for customers who want to replace older multi-protocol terminal emulation that has a large footprint, with a robust, IP-only client.