ZyXEL Communications Omni 56K User Manual page 81

Switched 56 Digital service at 56 Kbps provided by local telephone companies and long distance
carriers. Similar to ISDN, Switched 56 traffic can travel over the same physical
infrastructure that supports ISDN. Switched 56, however, is an older technology with
decreasing significance.
Speed at which a signaling unit is transferred. In modern modem modulation, a signaling
Symbol Speed
unit is no longer a single bit. Thus, the bit speed is different from the symbol speed.
In synchronous transfer, a dedicated control signal line transmits a clock signal that paces
Synchronous
the transmitted data. In high speed connections, the transfer between two modems is always
synchronous, even if the DCE to DTE connection is asynchronous.
T.30 A standard for fax transfers.
A standard for a telephone wall outlet used in some countries, particularly in Germany.
TAE6
Telnet Telnet is the login and terminal emulation protocol common on the Internet and in UNIX
environments. It operates over TCP/IP networks. Its primary function is to allow users to
log into remote host systems.
Tempest Illegal interception of data from computers and video signals.
ter Old French word for three.
A device that allows you to send commands to a computer somewhere else. At a minimum,
Terminal
this usually means a keyboard and a display screen and some simple circuitry.
A computer running terminal software is used as terminal equipment in modem
Terminal
connections.
Equipment
Terminal Software that pretends to be (emulates) a physical terminal and allows you to type
Software commands to a computer somewhere else.
A token is a re-encoding of information in less bits; basically an abbreviation.
Token
Transfer Mode Data can be transferred either synchronously or asynchronously.
The speed at which the data bits are effectively transferred.
Transfer Rate
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.
A widely used operating system in large networks.
UNIX
URL (Uniform Resource Locator) URL is an object on the Internet or an intranet that resides on
a host system. Objects include directories and an assortment of file types, including text
files, graphics, video, and audio. A URL is the address of an object that is normally typed
in the Address field of a Web browser. The URL is basically a pointer to the location of an
object.
The ITU-TSS V. – standards describe data transfer via telephone lines.
V.
WAN Wide Area Networks link geographically dispersed offices in other cities or around the
globe. Just about any long-distance communication medium can serve as a WAN link,
including switched and permanent telephone circuits, terrestrial radio systems, and satellite
systems.
Warez A term that describes Pirated Software on the Internet. Warez include cracked games or
User's Guide for ZyXEL Omni 56K USB Modem
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