Cuda 12000 IP Access Switch CLI-based Administration Guide
599
Incremental
Related Carriers
(IRC)
A method of spacing NTSC television channels on a cable television system in
which all channels except 5 and 6 correspond to the standard channel plan,
used to reduce composite triple beat distortions.
Information
Element
The fields that make up a MAP and define individual grants, deferred grants,
etc.
Ingress Noise A type of noise that is the major source of cable system noise. It is caused by
discrete frequencies picked up by the cable plant from marine a nd radio
broadcasts or from improperly grounded or shielded home appliances such
as a hair dryer.
Initial Ranging A process in which a cable modem acquires the correct timing offset so that
it can accurately transmit using the correct mini-slot. Each cable modem
obtains a timing offset; the timing offset depends on the time difference of
the distance of the cable modem from the CMTS. Initial ranging is
performed at cable modem initialization.
Institute of
Electrical and
Electronic
Engineers (IEEE)
An organization of electrical engineers. The IEEE fosters the development of
standards that often become national and international standards. Many
IEEE standards are network interface standards.
International
Organization for
Standardization
(ISO)
An international standards body, commonly known as the International
Standards Organization.
International
Telecommunicatio
ns Union (ITU-T)
The Telecommunication Standardization Sector of the International
Telecommunications Union is the primary international body for fostering
cooperative standards for telecommunications equipment and systems.
Internet Control
Message Protocol
(ICMP)
An Internet network-layer protocol.
Internet
Engineering Task
Force (IETF)
A group that defines standard Internet operating protocol, such as TCP/IP.