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Cooper Bussmann 615M-1 Cellular Data Modem and IP Router Series Manual
Rev Version 1.0
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a - GlOSSary
Term
Definition
APN, Access Point
Access Point Name (APN). An access point connects wireless network stations (or clients) to
other stations within the wireless network and also can serve as the point of interconnection
between the wireless network and a wired network. Each access point can serve multiple
users within a defined network area. Also known as a base station.
AWG
American wire gauge (AWG), also known as the Brown & Sharpe wire gauge, is a standard-
ized wire gauge system used predominantly in the United States and Canada for the
diameters of round, solid, nonferrous, electrically conducting wire.
Bandwidth
The maximum data transfer speed available to a user through a network.
CDMA
Code division multiple access (CDMA) is a channel access method used by various radio
communication technologies in which the transmitter encodes the signal using a pseudo-ran-
dom sequence that the receiver also knows and can use to decode the received signal. Each
different random sequence corresponds to a different communications channel.
CTS
Clear To Send. In serial communications, a signal sent, as from a modem to its computer, to
indicate that transmissions can proceed.
DCD
Data Carrier Detected. A control signal in serial communications that is sent between a com-
puter and another device, such as a modem, to indicate that the device is ready for transmit-
ting.
DCE
Data communications equipment (DCE) is a device that sits between the data terminal equip-
ment (DTE) and a data transmission circuit. Usually, the DTE device is the terminal (or com-
puter), and the DCE is a modem.
DTE
Data terminal equipment (DTE) is an end instrument that converts user information into sig-
nals or reconverts received signals. These can also be called tail circuits. A DTE device com-
municates with the data circuit-terminating equipment (DCE).
DHCP
Dynamic Host Configuration Protocol is a utility that enables a server to dynamically assign
IP addresses from a predefined list and limit their time of use so that they can be reassigned.
Without DHCP, an IT manager would need to manually enter in all the IP addresses of all the
computers on the network. If DHCP is used, whenever a computer logs onto the network, it
automatically gets an IP address assigned to it.
DNS
Domain Name Service is a program that translates URLs to IP addresses by accessing a
database maintained on a collection of Internet servers. The program works behind the
scenes to facilitate surfing the Web with alpha versus numeric addresses. A DNS server con-
verts a name like mywebsite.com to a series of numbers like 107.22.55.26. Every website has
its own specific IP address on the Internet.
EDGE
Enhanced Data rates for GSM Evolution (EDGE), also known as Enhanced GPRS (EGPRS), or
IMT Single Carrier (IMT-SC), or Enhanced Data rates for Global Evolution) is a digital mobile
phone technology that allows improved data transmission rates as a backward-compatible
extension of GSM.
EVDO
Enhanced Voice-Data Optimized (EVDO) is a telecommunications standard for the wireless
transmission of data through radio signals, typically for broadband Internet access. It uses
multiplexing techniques including code division multiple access (CDMA) as well as time divi-
sion multiplexing (TDM) to maximize both individual users’ throughput and the overall system
throughput.
Firewall
A device or computer program that keeps unauthorized users out of a private network.
Everything entering or leaving a system’s internal network passes through the firewall and
must meet the system’s security standards in order to be transmitted. Often used to keep
unauthorized people from using systems connected to the Internet.
FTP
File Transfer Protocol (FTP) is a standard network protocol used to transfer files from one
host to another host over a TCP-based network, such as the Internet.
