DEC VT1000 Service Manual page 17

ThinWire Lets the terminal operate with X window applications and
connector multiple video terminal (VTE) sessions, using either the LAT
or TCP/IP network protocol. You must use the ThinWire connector
to operate with X window or DECwindows software.
Serial Lets the terminal connect to a single host or terminal server as a
line traditional video terminal.
System Software Support
The following table summarizes the system resources needed to open X
window sessions or video terminal (VTE) sessions:
Operating
Operation System
Video terminal VMS Version 4.0 or higher
session
UNIX (any version)
ULTRIX (any version)
UWS Version 2.2
X window VMS Version 5.3-1 or higher
session
UNIX (any version)
UWS Version 2.1 or higher
(includes ULTRIX Version
3.1)
Overview of the Terminal 9
Communication
Protocol
LAT
TELNET (TCP/IP)
TELNET (TCP/IP)
or LAT
LAT
TCP/IP
TFTP (UDP) for font
service
TCP/IP
TFTP (UDP) for font
service