AT&T DataPort PCX Modem User Manual page 82

Glossary
T
ter
Latin for "thrice." Used to denote the third version of a standard
or recommendation, as in V.27ter.
tone dialing
One of two dialing methods, in which telephone numbers are
sent as tones across the telephone lines.
training
A process where two modems try to establish a connection over
the telephone line.
TXD
Transmit Data. Pin 2 of an RS-232 interface that is used by the
computer to transmit data to the modem. Conversely, the
modem uses Pin 2 to receive data from the computer.
U
UART
Universal Asynchronous Receiver and Transmitter. UARTs send
and receive data on asynchronous serial EIA RS-232 lines. The
internal DataPort PCX modem has a 16550A-compatible UART;
the external DataPort PCX modem uses the UART on your
computer's COM port.
upload
A file transfer in which you send a file to another computer.
GL-10
Issue 2 July 1995