Glossary
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TE
terminal equipment: Any peripheral device that is ISDN-compatible
and attached to a network, such as a telephone or computer. TE1s are
devices that are ISDN-ready and understand ISDN signaling techniques.
TE2s are devices that are not ISDN-ready and do not understand ISDN sig-
naling techniques. A terminal adapter must be used with a TE2.
TE1
A device with a four-wire, twisted-pair digital interface is referred to
as terminal equipment type 1. Most modern ISDN devices are of this type.
TE2
Devices known as terminal equipment type 2 do not understand
ISDN signaling techniques, and a terminal adapter must be used to con-
vert the signaling.
telco
A common abbreviation for the telephone company.
Telnet
The standard terminal emulation protocol within the TCP/IP pro-
tocol stack. Method of remote terminal connection, enabling users to log in
on remote networks and use those resources as if they were locally con-
nected. Telnet is defined in RFC 854.
10BaseT
Part of the original IEEE 802.3 standard, 10BaseT is the Ethernet
specification of 10Mbps baseband that uses two pairs of twisted-pair, Cat-
egory 3, 4, or 5 cabling--using one pair to send data and the other to receive.
10BaseT has a distance limit of about 100 meters per segment. See also:
Ethernet and IEEE 802.3.
terminal adapter
A hardware interface between a computer without a
native ISDN interface and an ISDN line. In effect, a device to connect a stan-
dard async interface to a non-native ISDN device, emulating a modem.
terminal emulation
The use of software, installed on a PC or LAN server,
that allows the PC to function as if it were a "dumb" terminal directly
attached to a particular type of mainframe.
TFTP
Conceptually, a stripped-down version of FTP, it's the protocol of
choice if you know exactly what you want and where it's to be found. TFTP
doesn't provide the abundance of functions that FTP does. In particular, it
has no directory browsing abilities; it can do nothing but send and receive
files.
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