Glossary

Term

Definition

 

 

EDGE

Enhanced Data Rates for Global Evolution, an enhancement to GPRS technology that

 

enables higher speed data connections than GPRS.

 

 

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.

 

 

GSM

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.

 

 

MMS

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 E-mail

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.

 

 

SIM card

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

 

 

SMS

Short Messaging Service, a text message service that allows cellular phone users to

 

send and transmit short messages up to 160 characters long.

 

 

TDMA

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).

 

 

VPN

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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