Glossary
GL-4
Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
OL-17309-01
HDLC
High-Level Data Link Control.
HFC
Hybrid fiber-coaxial.
HSSI
High-Speed Serial Interface.
I
IEC
International Electrotechnical Commission.
IEEE 802.3
IEEE LAN protocol that specifies an implementation of the physical layer and the MAC sublayer of
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.
ITU-T
International Telecommunication Union-Telecommunications Standardization Sector.
ITU-T J.83 Annex A
Series J.83 deals with the transmission of television, sound programming, and other multimedia
signals. Annex A defines the management interface between the customer premises equipment and the
Frame Relay network for European channel plans.
M
MAC
Media Access Control.
Major alarm
One of a group of alarm conditions that are considered the second most severe of all reportable alarms.
Major alarms affect several 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
Critical alarm
and
Minor alarm
.
MER
Modulation error ratio.
Minor alarm
One of a group of alarm conditions that are considered the third most severe of all reportable alarms.
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
Critical alarm
and
Major alarm
.
MSO
Multiple system operator.
N
NCTA
National Cable Television Association.
NPE
Network processing engine.
NSE
Network services engine.
