ADTRAN Express L128, User Manual

Page: 178 / 200

61202.070L1-1 Express L128/L128T User Manual 161
Glossary
10Base2
IEEE 802.3 specification, similar to Ethernet, using thin coaxial cable that runs
at 10 Mbps, with a maximum distance of 185 meters per segment. Also known
as Thin Ethernet or Thinwire Ethernet.
10BaseT
IEEE 802.3 specification, using unshielded twisted-pair cabling and running at
10 Mbps.
AEP
AppleTalk Echo Protocol. Allows a node on an AppleTalk network to send a
packet to another node and in return, receive an echoed copy of the packet.
B-Channel
64 kbps bearer channel used for voice, circuit, or packet switched data.
bearer service
As defined by CCITT standards, a type of telecommunication service that pro-
vides the capability for the transmission of information between user-to-net-
work interfaces. Bearer services defined for ISDN are circuit mode and packet
mode.
BOOTP
The Bootstrap Protocol allows a network node to determine certain startup in-
formation such as its IP address.
Bridge
A data communications device that connects two or more networks. A bridge
stores and forwards complete packets between the networks. Bridges operate
at the data-link layer of the OSI model.
CCITT
Consultative Committee on International Telephony and Telegraphy. A body
of the International Telegraph Union (ITU) which prepares recommendations,
commonly referred to as international standards, to resolve technical tele-
graph and telephone problems.