Glossary

2B+D ‹ See BRI (Basic Rate Interface).

23B+D ‹ See PRI (Primary Rate Interface).

30B+D ‹ See PRI (Primary Rate Interface).

802.2IEEE ‹ Standards that govern the LLC within the Data Link layer of the OSI model. LLC frames carry user information between the nodes on a network and define the transmission of a frame between two stations. These standards are common across the various lower level standards within the Data Link and the Physical layers.

802.3IEEE ‹ Standards that govern the use of the CSMA/CD (Carrier Sense Multiple Access/Collision Detection) network access method used by Ethernet networks.

802.5IEEE ‹ Standards that govern the use of the token ring indicator and frame priority.

Adapter ‹ A device, usually a user interface card, that physically connects an end station to the network medium (for example, twisted pair, coaxial, fiber).

Advanced program-to-program communication ‹ See APPC.

AIS (Alarm Indication Signal) ‹ PRI alarm, also known as Keep Alive or Blue signal.

AMI (Alternate Mark Inversion) ‹ A method of digitally encoding data as electrical signals on a link.

ANSI (American National Standards Institute) ‹ An organization which coordinates, develops, and publishes standards used in the United States.

APPC ‹ Advanced Program-to-Program Communications.The general facility characterizing the LU 6.2 architecture and its various implementations in products. 2. Sometimes used to refer to the LU 6.2 architecture and its product implementations as a whole, or to an LU

6.2product feature in particular, such as an APPC application pro- gramming interface.

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