Comcast High-Speed 2Go User Manual page 64

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ESN — Electronic Serial Number. A unique 32-bit number embedded in a wireless device that
identifies the device.
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ExpressCard — PCMCIA's hardware standard for high-performance expansion of notebook computers.
Intended to replace the PC Card (formerly PCMCIA card) standard.
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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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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. Used for connecting to
the Internet.
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Hot-Swappable — The ability to safely remove and replace a component (for example, a memory card
or USB device) from a device or computer while it is powered on.
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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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IEEE — Institute of Electrical and Electronics Engineers. An international technical/professional society
that promotes standardization in technical disciplines.
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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. (See Network Operator)
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Kbps — Kilobits per second. The rate of data flow.
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LAN — Local Area Network. A type of network that lets a group of computers, all in close proximity
(such as inside an office building), communicate with one another. It does not use common carrier
circuits though it can have gateways or bridges to other public or private networks.
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