ZyXEL Communications Omni 288S User Manual page 136

Glossary
T.30 : A standard for fax transfers.
TAE6 : A standard for a telephone wall outlet used in some countries, particularly in
Germany.
ter : Old French word for three.
Terminal equipment : A computer running terminal software is used as terminal
equipment in modem connections.
Terminal program : A program which emulates the operation of a hardware terminal on a
computer's screen and keyboard.
Token : A token is a reencoding of information in less bits; basically an abbreviation.
Transfer mode : Data can be transferred either synchronouosly or asynchronously.
Transfer rate : The speed at which the data bits are effectively transferred.
UART : Universal Asynchronous Receiver and Transmitter; a special IC chip which
controls the serial port. Different models are available for PCs. Models with an internal
buffer usually allow higher transfer rates.
V. : The ITU-TSS V.-standards describe data transfer via telephone lines.
Western jack : Telephone wall outlet connector used in the USA and other countries.
X. : The ITU-TSS X.-standards describe data transfer in public data networks.
XModem : A widely used, though somewhat aged, file transfer protocol. The use of 128
byte data blocks severely limits the achievable throughput.
XON/XOFF : Software flow control. The data flow is stopped by sending ASCII character
Control-Q (dec. 17; hex $11) and restarted by Control-S (dec. 19; hex $13).
YModem : A file transfer protocol which uses data blocks of 1 Kbyte and transfers
filenames and more than one file in one transfer.
ZModem : A file transfer protocol with variable block size, reinitiation of aborted transfers
and transfer of several files in one transfer along with file (and path) names.
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