ZyXEL Communications 288S Benutzerhandbuch

D-7

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.