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

AirCard® 595U USB modem - User Guide

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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