User Guide

 

CnS

 

Control and Status—A proprietary protocol for managing

 

 

 

 

Sierra Wireless devices.

 

COM

 

The serial communications port of a computer.

directory number

 

See MIN

 

DNS

 

Domain Name Server—Internet server that supplies the

 

 

 

mapping of domain names to IP addresses.

 

dormancy

 

The packet data connection has the logical PPP session left

 

 

 

open while the underlying physical link (the radio channel) is

 

 

 

released. When traffic is to resume, a radio channel is re-

 

 

 

aquired and the original PPP session resumes.

 

DSRDUN

 

Dial-Up Networking—A Windows® protocol for connecting a

 

 

 

computer to a server via the telephone network.

 

E911

 

Emergency call mode.

 

ERP

 

Effective Radiated Power—A measure of the RF energy

 

 

 

radiated from an antenna.

 

ESD

 

Electro-Static Discharge

 

ESN

 

Electronic Serial Number—The unique serial number

 

 

 

assigned to the modem for cellular network use.

 

FCC

 

Federal Communications Commission—The U.S. federal

 

 

 

agency that is responsible for interstate and foreign communi-

 

 

 

cations. The FCC regulates commercial and private radio

 

 

 

spectrum management, sets rates for communications services,

 

 

 

determines standards for equipment, and controls broadcast

 

 

 

licensing. Consult www.fcc.gov.

 

FER

 

Frame Error Rate - Ratio of data transmitted with errors, to

 

 

 

total data transmitted. Used to determine the quality of a

 

 

 

signal. If the FER is too high, (too many errors,) the connection

 

 

 

may be dropped.

 

firmware

 

Software stored in ROM or EEPROM; essential programs that

 

 

 

remain even when the system is turned off. Firmware is easier

 

 

 

to change than hardware but more permanent than software

 

 

 

stored on disk.

 

FSN

 

Factory Serial Number—A tracking number applied by and

 

 

 

for the manufacturer, distinct from the ESN.

 

GUI

 

Graphical User Interface- Elements of a GUI include such

 

 

 

things as: windows, pull-down menus, buttons, scroll bars,

 

 

 

iconic images, wizards, the mouse, and no doubt many things

 

 

 

that havenʹt been invented yet.

 

host

 

1. A computer that uses a modem or a similar device to

 

 

 

answer a calling computer.

 

 

 

2. A source or destination in the communication network.

 

 

 

 

 

 

 

 

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