Motorola HH1620, Руководство пользователя

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interface for cable modems to deliver data between a cable network and
computer systems. Euro-DOCSIS is DOCSIS adapted for use in Europe.
DNS
The Domain Name System is the Internet system for converting domain
names to IP addresses. ADNS server contains a table matching domain
names such as Internetname.com to IP addresses such as 192.169.9.1.
When you access the Web, a DNS server translates the URL displayed on
the browser to the destination website IP address. The DNS lookup table is
a distributed Internet database; no one DNS server lists all domain-to-IP
address matches.
Domain name A unique name, such as motorola.com, that maps to an IP address.
Domain names are typically much easier to remember than IP addresses.
Dotted-decimal
Format Method of representing an IP address or subnet mask using four decimal
numbers called octets. Each octet represents eight bits. In a class C IP
address, the octets are “network.network.network.host.” The first three
octets together represent the network address and the final octet is the
host address. In the HH1620 LAN default configuration, 192.168.15
represents the network address. In the final octet, the host address can be
from 2 to 254.
Download To copy a file from one computer or other network device to another. You
can use the Internet to download files from a server to your home
computer. Your voice gateway downloads its configuration file and
firmware from
XXXX .
Downstream
In a cable data or DSL network, the direction of data received by your
computer from the Internet.
Driver Software that enables a computer to interact with a network or other
device. For example, there are drivers for printers, monitors, graphics
adapters, modems, Ethernet, USB, and many others.
DSL A digital subscriber line enables a broadband connection to the Internet
over traditional telephone lines that support DSL. You need a subscription
for DSL service from your local telephone company.
DSSS Direct-Sequence Spread Spectrum. DSSS is a transmission technology
used in WLAN transmissions where a data signal at the sending station is
combined with a higher data rate bit sequence, or chipping code, that
divides the user data according to a spreading ratio. The chipping code is a
redundant bit pattern for each bit that is transmitted, which increases the
signal's resistance to interference. If one or more bits in the pattern are
damaged during transmission, the original data can be recovered due to
the redundancy of the transmission.
Dynamic IP
Address
An IP address that is temporarily leased to a host by a DHCP server. The
opposite of static IP address.
ESS
An Extended Service Set (ESS) is a set of two or more BSSs that form a
single subnetwork. See also BSS.
Ethernet
The most widely used type of local area network (LAN). The most
commonly installed Ethernet networks are called 10Base-T. 10Base-T
provides transmission speeds up to 10 megabits per second (Mbps),
usually over twisted-pair wire. Fast Ethernet (100Base-T) provides
transmission speeds up to 100 Mbps.
Event A message generated by a device to inform an operator or the network
management system that something has occurred.
F-type
Connector A type of connector used to connect coaxial cable to equipment such as
the HH1620.
Firewall A security software system on the HH1620 that enforces an access control
policy between the Internet and the HH1620 LAN.
Firmware Code written onto read-only memory (ROM) or programmable read-only
memory (PROM). Once firmware has been written onto the ROM or
PROM, it is retained even when the device is turned off. Firmware is
HH1620 Wireless VoIP Gateway
User’s Guide
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