Palm OS Devices manual A network node that prevents traffic from one segment of a

Firewall	A network node that prevents traffic from one segment of a
	network from crossing over into another. Firewalls are used
	to protect internal systems from unauthorized external
	access.
Flash Memory	A memory feature or component which calls your mobile
	device to save information without power.
GPRS	General Packet Radio Service represents the first
	implementation of packet switching within GSM, which is
	essentially a circuit switched technology. Rather than
	sending a continuous stream of data over a permanent
	connection, packet switching only utilizes the network
	when there is data to be sent. Using GPRS will enable users
	to send and receive data at speeds up to 115kbits/sec
GSM	Global System for Mobile Communications. Digital
	cellphone system used through Europe based on TDMA
	(Time Division Multiple Access - a digital communication
	technology). Data transfer rates of 9.6 kbps.
Hot Sync Mode	A method by which a mobile device is connected by
	cradle/bay or cable to a desktop/notebook computer in order
	to perform synchronizations. Synchronizations update data
	or information from an external source to the mobile device.
Infrastructure	The combined components needed to operate a wireless
	network including sites, switching and transmission
	equipment.
Interface	Method or piece of equipment for interconnecting units or
	systems which may not be directly compatible.
Kbps	A measurement of bandwidth in the United States.
Land-Line	A connection that uses land-based networks or ‘wires’.
Last Connect	The last time an active connection (session) was made or
	synchronization was performed.
Latency	The time taken for data packets to pass through GPRS,
	normally measured as a round-trip time.
m-commerce	Mobile Commerce. Business transactions conducted with
	online mobile devices.
Mbps	Mega (million) bits per second. Measurement of
	transmission speed or bandwidth.
MHz	Megahertz. One million cycles per second (hertz).
	Measurement of electromagnetic energy and transmission
	speed (such as CPU's internal clock).
Middleware	An intermediate software component located on the wired
	network between the wireless appliance and the application
	or data residing on the wired network.
Mobility	Ability to continually move from one location to another.
Offline mode	A disconnected state that does not have an active
	connection and is not receiving data or information in real-
	time.
Optimization	Application software used to improve the performance of
Middleware	the basic bearer (transmission provider that provides service
	between user-network interfaces) service.
PalmOS®	The operating system for a mobile device. There are several
	device manufacturers that use this operating system.
PCMCIA	Personal Computer Memory Card International Association. A
	standardized technology used to develop an expansion for portable
	devices (i.e. notebooks) in paging credit card-sized support
	wireless connectivity.

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