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hop
hop count
host
HTTP
ICMP
IGMP
in-line filter
Internet
intranet
IP
IP address
ISP
LAN
LED
MAC address
mask
Mbps
86
When you send data through the Internet, it is sent first from your computer to a
router, and then from one router to another until it finally reaches a router that is
directly connected to the recipient. Each individual "leg" of the data's journey is
called a hop.
The number of hops that data has taken on its route to its destination. Alterna-
tively, the maximum number of hops that a packet is allowed to take before being
discarded , See also TTL.
A device (usually a computer) connected to a network.
Hyper-Text Transfer Protocol HTTP is the main protocol used to transfer data from
web sites so that it can be displayed by web browsers. See also web browser
Internet Control Message Protocol An Internet protocol used to report errors and
other network-related information. The ping command makes use of ICMP.
Internet Group Management Protocol An Internet protocol that enables a computer
to share information about its membership in multicast groups with adjacent
routers. A multicast group of computers is one whose members have designated
as interested in receiving specific content from the others. Multicasting to an IGMP
group can be used to simultaneously update the address books of a group of
mobile computer users or to send company newsletters to a distribution list.
See Microfilter
The global collection of interconnected networks used for both private and busi-
ness communications.
A private, company-internal network that looks like part of the Internet (users ac-
cess information using web browsers), but is accessible only by employees.
See TCP/IP.
Internet Protocol address The address of a host (computer) on the Internet,
consisting of four numbers, each from 0 to 255, separated by periods, e.g.,
209.191.4.240. An IP address consists of a network ID that identifies the particular
network the host belongs to, and a host ID uniquely identifying the host itself on
that network. A network mask is used to define the network ID and the host ID.
Because IP addresses are difficult to remember, they usually have an associated
domain name that can be specified instead. See also domain name, network mask.
Internet Service Provider A company that provides Internet access to its customers,
usually for a fee.
Local Area Network A network limited to a small geographic area, such as a home,
office, or small building.
Light Emitting Diode An electronic light-emitting device. The indicator lights on the
front of the My ADSL Modem are LEDs.
Media Access Control address The permanent hardware address of a device,
assigned by its manufacturer. MAC addresses are expressed as six pairs of char-
acters.
See network mask.
Abbreviation for Megabits per second, or one million bits per second. Network data
rates are often expressed in Mbps.
SmartVoice Gateway(s) User Guide
YML832 Rev1
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