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ESN
— Electronic Serial Number. A unique 32-bit number embedded in the microchip of a wireless
device that identifies the device.
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Firewall
— A hardware or software boundary that protects a network or single computer from
unwanted outside traffic.
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Firmware
— A computer program embedded in an electronic device. Firmware usually contains
operating code for the device.
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FTP
— File Transfer Protocol. A network protocol for exchanging files over a TCP network.
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Gateway
— A network point that acts as an entrance to another network that uses a different
protocol.
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GPRS
— General Packet Radio Services. A system used by GSM mobile phones for transmitting IP
packets. It also provides support for WCDMA based 3G networks.
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GSM
— Global System for Mobile communication. A digital mobile telephony system widely used in
Europe and other parts of the world. GSM was first launched in 1991 and is the most widely used of
the three digital wireless telephony technologies (TDMA, GSM, and CDMA). GSM uses a variation of
TDMA.
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Host Name
— The unique name by which a network-attached device is known on a network.
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Hotspot
— A WiFi (802.11) access point or the area covered by an access point.
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Hot-Swappable
— The ability to remove and replace the microSD Card from a device while it is still
connected to the computer and online without damaging the device.
Update
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HSDPA
— High Speed Downlink Packet Access. HSDPA is an enhanced version of WCDMA that
supports broadband connections with download speeds up to 7.2 Mbps. This enhanced 3G
technology enables the download of high-bandwidth multimedia files, high resolution graphics, and
other complex files, and viewing email attachments at broadband-like speeds.
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HSPA
— High Speed Packet Access.
A family of 3G services that is available to GSM carriers. It is a
major enhancement from WCDMA.
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HSUPA
— High Speed Uplink Packet Access.
A 3G mobile telephony protocol with up-link speeds up
to 5.76 Mbps.
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HTTP
— Hypertext Transfer Protocol. An application-level protocol for accessing the World Wide Web
over the Internet.
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IMAP
— Internet Message Access Protocol. An Internet standard protocol for email retrieval.
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IMSI
— International Mobile Subscriber Identity. Used in GSM networks to identify the subscriber.
Usually embedded in the SIM.
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IP
— Internet Protocol. The mechanism by which packets are routed between computers on a
network.
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IP Type
— The type of service provided over a network.
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IP address
— Internet Protocol address. The address of a device attached to an IP network (TCP/IP
network).
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ISP
— Internet Service Provider. Also referred to as the service carrier, an ISP provides Internet
connection service.
