Sierra Wireless 595U manual Personal Computer Memory Card International Associ‐

ESN

Electronic Serial Number—The unique first‐generation serial

number assigned to the AirCard USB modem for cellular

network use. Compare to MEID.

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.

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.

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.

3. A computer that contains data or files to be accessed by

client computers. Also known as a server.

IS

Interim Standard—After receiving industry consensus, the

TIA forwards the standard to ANSI for approval.

IS-95

The standard for CDMA.

Kbps

Kilobits per second—Actually 1000, not 1024, as used in

computer memory size measurements of kilobytes.

LAN

Local Area Network

LED

Light Emitting Diode—A semiconductor diode that emits

visible or infrared light.

MEID

Mobile Equipment Identifier—The unique second‐gener‐

ation serial number assigned to the AirCard USB modem for

cellular network use. Compare to ESN.

MHz

Mega‐Hertz—One million cycles per second.

Mbps

Megabits per second

packet

A short fixed‐length block of data including a header that is

transmitted as a unit in a communications network.

PC Card™

Add‐in memory and communications cards for portable

computers. PC Card is a trademark of the PCMCIA.

PCMCIA

Personal Computer Memory Card International Associ‐

ation—The organization that standardizes PC Cards.

PCS

Personal Communications Services—A cellular communi‐

cation infrastructure that uses a different frequency range than

AMPS.

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