Glossary - HP iPAQ hw6510 Introduction Manual

Glossary

Term
EDGE
GPRS
GSM
MMS
Push E-mail
SIM card
SMS
TDMA
VPN
Definition
Enhanced Data Rates for Global Evolution, an enhancement to GPRS technology that
enables higher speed data connections than GPRS.
General Packet Radio Service, an enhancement to the GSM mobile communications
system that supports data packets. GPRS is suitable for sending and receiving data,
such as e-mail or file transfers.
Global System for Mobile Communications, a digital cellular phone technology
based on time division multiple access (TDMA) technology. GSM is a circuit-switched
system that divides each 200 kHz channel into 8 time slots.
Multimedia Messaging Service, an enhanced transmission service that allows cellular
phone users to transmit photographs, video clips, sound files and short text messages
over wireless networks.
Push technology keeps your Outlook Mobile up-to-date by delivering Inbox,
Calendar, Contacts, and Tasks list quickly and directly to your HP iPAQ while
synchronized over GSM/GPRS/EDGE or Wi-Fi through a corporate Microsoft
Exchange server. GoodLink e-mail solution offers the Push e-mail technology.
Subscriber Identity Module, an intelligence module that operates GSM phone
features and contains a computer chip with information like user phone number,
service, registration information and contacts. SIM cards also contain the memory to
store speed dial numbers and text messages
Short Messaging Service, a text message service that allows cellular phone users to
send and transmit short messages up to 160 characters long.
Time Division Multiple Access (IS 136) technology is named for the frequency bands
that are available to a network that is divided into time slots. Each user has access to
one time slot at regular intervals. TDMA IS 136 uses time division multiplexing for
voice and control channel transmissions for business and home use. (The major
phone carriers using TDMA technology are AT&T Wireless Services, Bell South, and
Southwestern. Bell).
Virtual Private Network, a type of technology designed to increase the security of
information transferred over the Internet. VPN works with either wired or wireless
networks, as well as with dial-up connections. VPN creates a private encrypted
tunnel from the end user's personal computer, through the local wireless network,
through the Internet, to the corporate servers and database.
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