Section 1: Common Terms - DSC Network Alarm Communicator Installation Manual

Wiring Diagrams
5.1 Mounting T-Link Using HMB-1 Bracket
Mounting Instructions
Step 1: Mount the Control panel cabinet and PCB as per the panel's installa-
tion instructions
Step 2: Insert the four nylon standoffs from the bottom of the HMB-1 bracket
Step 3: Push the HMB-1 hangers onto the top right corner of the panel cabi-
net
Step 4: Align the T-link mounting holes with the standoffs on the HMB-1 and
snap into place
Step 5: Wire the T-Link module to the control panel (refer to pages 13 and 14
for wiring instructions)
12
Common Terms
Section 5
Ethernet
A local-area network (LAN) protocol developed by Xerox Corporation in
cooperation with DEC and Intel in 1976. Ethernet uses a bus or star
topology and supports data transfer rates of 10 Mbps. A newer version
of Ethernet, called 100BaseT (or Fast Ethernet), supports data transfer
rates of 100 Mbps. The newest version, Gigabit Ethernet, supports data
rates of 1 Gigabit (1,000 Megabits) per second.
IEEE
Abbreviation of Institute of Electrical and Electronics Engineers, pro-
nounced I-triple-E. Founded in 1963, the IEEE is an organization com-
posed of engineers, scientists, and students. The IEEE is best known for
developing standards for the computer and electronics industry.
Intranet
A network based on TCP/IP protocols belonging to an organization,
usually a corporation, accessible only by the organization's members,
employees, or others with authorization.
IP
Abbreviation of Internet Protocol, pronounced as two separate letters.
IP specifies the format of packets, and the addressing scheme. Most
networks combine IP with a higher-level protocol called Transport Con-
trol Protocol (TCP), which establishes a virtual connection between a
destination and a source.
IP by itself is something like the postal system. It allows you to address
a package and drop it in the system, but there's no direct link between
you and the recipient. TCP/IP , on the other hand, establishes a connec-
tion between two devices so that they can send messages back and
forth for a period of time.
IP Address
An identifier for a computer or device on a TCP/IP network. Networks
using the TCP/IP protocol route messages based on the IP address of
the destination. The format of an IP address is a 32-bit numeric
address written as four numbers separated by periods. Each number
can be zero to 255.
LAN
A computer network that spans a relatively small area. Most LANs are
confined to a single building or group of buildings. However, one LAN
can be connected to other LANs over any distance via telephone lines
and radio waves. A system of LANs connected in this way is called a
wide area network (WAN).
Section 1
1