CSX400 and CSX400-DC User’s Guide 251
F

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. It is an 8-bit code for character
representation.
AUI — Attachment Unit Interface. An IEEE 802.3 transceiver cable connecting the network
device (such as a router) to the MAU (media access unit).
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.
Bridge — A device that segments network traffic. A bridge maintains a list of each node on the
segment 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.
Bearer (B) Channel — A full duplex ISDN BRI or PRI 64 Kbps channel used for sending user
data.
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.
CHAP — Challenge Handshake Authentication Protocol. A security protocol supported under
point-to-point protocol (PPP) used to prevent unauthorized access to devices and remote networks.
Uses encryption of password, device names and random number generation.
DCE — Data Communications Equipment. Equipment used within a network to transfer data
from source to destination such as modems.
D Channel — In ISDN, a full-duplex 16 Kbps channel used for link setup.