Verizon u620l User Manual page 82

Glossary
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3G — Third Generation. 3G refers to the third generation of mobile telephony technology.
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4G LTE — One of several competing 4G standards. LTE (Long-Term Evolution) is a standard of wireless
communication of high-speed data for mobil phones and data terminals:
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APN — Access Point Name. The APN is an alphanumeric string that identifies the particular network
service that is being accessed. These are used by GPRS and UMTS networks.
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Broadband — High-capacity high-speed, transmission channel with a wider bandwidth than
conventional modem lines. Broadband channels can carry video, voice, and data simultaneously.
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CDMA — Code Division Multiple Access. It is the underlying channel access method used by some
mobile phone standards.
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DNS — Domain Name System. A system for converting host names and domain names into IP
addresses on the Internet or on local networks that use the TCP/IP protocol.
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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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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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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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GPS — Global Positioning System. A radio-based navigation system that allows users to determine
their location. The device uses satellite data to calculate its position. Commonly used in mapping and
navigation systems.
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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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ICCID — Integrated Circuit Card IDentification. A serial number stored in and engraved or printed on a
SIM card that internationally identifies the card.
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IP — Internet Protocol. The mechanism by which packets are routed between computers on 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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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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