User Manual

Definitions
Item Definition
Access Point Communication hub for users to connect to a wired
LAN. APs are important for
providing heightened wireless security and for extending the physical range of
service a wireless user has access to.
ACT LED Ethernet data activity.
Airlink Physical radio frequency connections used for communications between units.
ARP Address Resolution Protocol – Maps Internet address to physical address.
Asynchronous Information that can be sent at random times, and not synchronized to a clock.
Transmission characters begin with a “start” bit and end with a “stop” bit.
Backbone The part of a network that connects most of the systems and networks together,
and handles the most data.
Bandwidth The transmission capacity of a given device or network.
Dwell Interval Time between channel changes
Browser An application program that provides a way to look at and interact with all the in-
formation on the World Wide Web.
CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) - A method of data transfer
that is used to prevent data collisions.
COM Port Both RS-232 serial communications ports of the HiPR-900 wireless radiomodem
are configured as DCE and are designed to connect directly to a DTE.
CTS Clear to Send. An RS-232 output signal from the HiPR-900 signifying that it is
ready to accept data (used in RTS mode).
DCE Data Communications Equipment. This designation defines the direction (input
or output) of the various RS-232 interface signals and is applied to equipment
such as modems. DCE is designed to connect to DTE.
Default Gateway A device that forwards Internet traffic from your local area network.
DHCP (Dynamic Host Configuration Protocol) - A networking protocol that allows ad-
ministrators to assign temporary IP addresses to network computers by "leasing"
an IP address to a user for a limited amount of time, instead of assigning perma-
nent IP addresses.
DNS (Domain Name Server) - The IP address of your ISP's server, which translates the
names of websites into IP addresses.
Domain A specific name for a network of computers.
DTE Data Terminal Equipment. This designation is applied to equipment such as ter-
minals, PCs, RTUs, PLCs, etc. DTE is designed to connect to DCE.
Dynamic IP Addr A temporary IP address assigned by a DHCP server.
Encryption AES (Advanced Encryption Standard) - uses 128-bit encryption to secure data.
Ethernet IEEE standard network protocol that specifies how data is placed on and re-
trieved from a common transmission medium.
Firewall A set of related programs located at a network gateway server that protects the
resources of a network from users from other networks.
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