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Glossary
High-Level Data Link Control.
HDLC
Hybrid fiber-coaxial.
HFC
High-Speed Serial Interface.
HSSI
I
International Electrotechnical Commission.
IEC
IEEE LAN protocol that specifies an implementation of the physical layer and the MAC sublayer of
IEEE 802.3
the data link layer. IEEE 802.3 uses CSMA/CD access at a variety of speeds over a variety of physical
media. Extensions to the IEEE 802.3 standard specify implementations for Fast Ethernet and Gigabit
Ethernet.
International Telecommunication Union-Telecommunications Standardization Sector.
ITU-T
Series J.83 deals with the transmission of television, sound programming, and other multimedia
ITU-T J.83 Annex A
signals. Annex A defines the management interface between the customer premises equipment and the
Frame Relay network for European channel plans.
M
Media Access Control.
MAC
One of a group of alarm conditions that are considered the second most severe of all reportable alarms.
Major alarm
Major alarms affect several subscribers who connect to the reporting node. You can use the show
facility-alarm status
See also
Modulation error ratio.
MER
One of a group of alarm conditions that are considered the third most severe of all reportable alarms.
Minor alarm
Minor alarms affect a single or small number of subscribers who connect to the reporting node. You
can use the show facility-alarm status Cisco IOS command to obtain more information about the
problem. See also
Multiple system operator.
MSO
N
National Cable Television Association.
NCTA
Network processing engine.
NPE
Network services engine.
NSE
Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
GL-4
Cisco IOS command to obtain more information about the problem.
Critical alarm
and
Minor
alarm.
Critical alarm
and
Major
alarm.
OL-17309-01
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Table of Contents
Troubleshooting
