Table of Contents
Advertisement
Glossary and Index
100BASE-TX, and a switching hub has switching
functions.
IP (Internet Protocol)
Protocol used between host computers to
transfer packets over all of the Internet. The
codes that identify the destinations and senders
in packet transfers are called IP addresses. An
IP address is a 32-bit code that can identify a
network and host in the network. A unique IP
address must be allocated to each hosts that
communicates on the Internet.
IP Address
Code used for identifying a node (e.g., PC)
operating using TCP/IP. This 32-bit number is
divided into four 8-bit sections, and an example
of this is 200.10.101.1.
IP Multicast
Technology for transmitting identical data to
multiple remote destinations simultaneously us-
ing TCP/IP. An address system called class D
is used for multicasting. In the class D address
system, the first four bits (1110) indicate a multi-
cast, and the remaining 28 bits specify a
multicast group. Path control methods for IP
multicasting are PIM and DVMRP, but no one
method has become the standard yet.
LAN (Local Area Network)
Data communication system in a specific area
(maximum of 6 miles or about 10 km).
provides moderate to high data transfer speeds.
LED (Light-Emitting Diode)
The IP-9610 has a power LED lamp and
alarm LED lamps. The power LED lamp is lit
in green to indicate the device is on.
alarm LED lamp is lit in red to indicate that an
alarm has been generated.
MPEG-4
Standard for the compression and coding
of color video for storage purposes, and the
name of the organization promoting this
standardization is used in the name of the
standard.
MPEG-4 handles not only regular
image and voice data but also a comprehensive
range of multimedia data, including computer
graphics and text.
framework for a scalable object encoding system
depending on technological developments.
has a transfer speed ranging from several tens
of Kbps to
several tens of Mbps (low bit rate
to wide range).
It is intended for low-speed
IP-9610
An
It defines a flexible
communication by general-purpose multimedia
encoding systems on mobile terminals.
PING
Command supported by operating systems such
as UNIX, Windows 9x, and Windows NT, and it is
used in TCP/IP networks to check whether IP
packets can reach or have reached their
communication destinations
PPPoE (Point to Point Protocol over Ethernet)
This is the user authentication standard for the
connection like PPP connection on the Ethernet
network.
PS
MPEG-2 method of multiplexing audio, video,
and data.
Stream, and it is used for transmission and
storage in an error-free environment.
RS-232C
Interface standard that was mainly established by
the Electronics Industry Association (EIA) for
communication between data terminals and data
communications equipment
RS-422
A serial communication standard is standardized
by the Electronic Industries Alliance (EIA). RS-422
can make transmission robust against noise. It
supports cable lengths of up to 1.2 km and
communication speeds of up to 10 Mbps
It
SD-SDI (Standard Definition television – Serial
Digital Interface)
Standard
definition
standardized in SMPTE259M.
SG (Signal Ground)
Ground for signals
Subnet Mask
Mask value used for obtaining a subnet network
address from an IP address.
address is obtained by using an AND operation
between an IP address and subnet mask.
TCP (Transmission Control Protocol)
Abbreviation of Transmission Control Protocol,
which is the protocol required for direct connection
to the Internet. In the OSI reference model, TCP
corresponds to the transport layer and IP
It
corresponds to the network layer. TCP has been
a global standard protocol that is supported by
major operating systems, including UNIX, OS/2,
Windows 95, and Windows NT.
70
It is an abbreviation of Program
digital
video
interface
The subnet
Advertisement
Table of Contents
