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Glossary
IEEE
Institute of Electrical and Electronic Engineers. Professional organiza-
tion that defines network standards. IEEE LAN standards are the pre-
dominant LAN standards today and include protocols similar or
virtually equivalent to Ethernet and Token Ring.
IEEE 802.1d
An algorithm used to prevent bridging loops by creating a spanning
tree.
IEEE 802.2
An IEEE LAN protocol that specifies an implementation of the LLC
sublayer of the data link layer. It handles errors, framing, flow con-
trol, network layer (Layer 3) service interface, and is used in LANs.
IEEE 802.3
A physical layer standard specifying a linear bus network LAN with
a CSMA/CD access method on a bus topology. Ethernet follows the
802.3 standard, transmitting at 10 megabits per second. This is the
most common local area network specification. Physical variations of
IEEE 802.3 include 10Base2 and 10BaseT.
in-band signalling
Signalling made up of tones which pass within the voice frequency
band and are carried along the same circuit as the talk path being es-
tablished by the signals. Virtually all signalling (request for service,
dialing, disconnect, etc.) in the U.S. is in-band signalling. Most of that
signalling is MF (Multi-Frequency) dialing. The more modern form of
signalling is out-of-band.
interexchange carrier
Since divestiture, any carrier registered with the FCC authorized to
carry customer transmissions between LATAs interstate, or if ap-
proved by a state public utility commission, intrastate. Includes carri-
Glossary-4
Express L768 User Manual
61203192L1-20
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