User guide

Glossary
123
Glossary
10Base-T
IEEE 802.3 standard for the use of Ethernet LAN technology over unshielded
twisted pair wiring, running at 10 Mbps.
ARP
Address Resolution Protocol. An Internet protocol used to bind an IP address
to Ethernet/802.3 addresses.
ASCII
American Standard Code for Information Interchange. 8-bit code for
character representation.
AUI
Access Unit Interface. An IEEE 802.3 transceiver cable connecting the
networked device (such as a router) to the MAU (Media Access Unit).
B-Channel
In ISDN, a full-duplex, 64 Kbps channel used for sending user data.
Bandwidth-on-Demand
Feature providing the capability of adjusting the bandwidth (opening or
closing multiple B-channels) when the load in traffic increases or decreases.
BRI
Basic Rate Interface. The ISDN interface providing two 64 Kbps
B-channels for voice, data and video transmission and one 16 Kbps D-
channel for signaling and data transmission.
Bridge
A device that segments network traffic. A bridge maintains a list of each
segment’s nodes and only traffic destined for a node on the adjacent segment
is passed across the bridge. A bridge operates at Layer 2 of the OSI reference
model.
CHAP
Challenge Handshake Authentication Protocol. A security protocol supported
under Point-to-Point Pprotocol (PPP) used to prevent unauthorized access to
devices and remote networks. Uses encryption of password, device names,
and random number generation.