Technical data

90362-01 Glossary L-3
d-channel A “data” channel. It carries control signals and customer-call data in a
packet switched mode. See also BRI.
dedicated line A private phone line that ensures constant transmission capabilities.
Dedicated lines may be leased or privately owned.
dial backup For dedicated or leased line connections, a dial backup is a dial-up
connection that only comes up if something happens to the dedicated
connection.
DLCI D ata L ink C hannel I dentifier. Used for frame relay connections.
Domain Name server A network administrator can designate a domain server for NetBlazer
use. This means that NetBlazer users don’t need to remember IP
addresses, but can use names such as telebit.com .
en0 The name of the first Ethernet port in the NetBlazer Setup Utility.
Ethernet Ethernet is the LAN specification developed by Xerox. This LAN tech-
nology uses CSMA/CD signaling over thick or thin coaxial cable with
interconnections to computer-related devices such as PCs and
printers. It has a bandwidth of 10 Mbps.
NetBlazer’s Ethernet support includes Ethernet II frames or Novell's
802.3 frames.
frame relay A fast packet-switching technology that achieves up to 10 times the
speed of X.25 packet-switching networks that use the same hardware.
Error checking and flow control are minimized in frame relay.
hops or hop count A count of the number of routers through which a packet has to pass
before the network disposes of the packet as faulty.
host An end system, such as a PC, on a network; this system can perform
network activities.
IANA I nternet A ssigned N umber A uthority. The technical body that assigns
and coordinates the use of Internet protocol parameters such as
Internet addresses, domain names, port numbers, and many others.
interface Connection between two devices or systems. In routing, a network
connection.