Chapter 9. Glossary - Arris Touchstone TG2472 User Manual

Glossary
A
Amp-Hour
A measure of battery capacity. For
example, a 1.0Ah battery can nominally
supply one Ampere of current for one
hour.
C
Category 5e (Cat5e)
A high-quality type of cable, used for
gigabit Ethernet (1000BaseT)
connections. When purchasing Ethernet
cables, always look for Category 5e cable.
Coaxial cable (coax)
A thin wire, used to connect your
television and Telephony Gateway to the
cable TV system. You can buy coax from
any electronics retailer and many
discount stores.
CPE
Customer Premise Equipment. This is the
equipment that is plugged in to the
Telephony Gateway; typically a computer
or hub.
Cross-over
An Ethernet cable used to connect two
hubs (or a hub and a cable modem)
together. Also, some Ethernet hubs may
have built-in cross-over on one or more
ports (which eliminates the need for a
cross-over cable).
D
DHCP
Dynamic Host Configuration Protocol.
An IP protocol used to provide an IP
address and location of services (such as
DNS and TFTP) needed by a device
connecting to the network. DHCP allows
the cable company to configure your
computer's networking software for you.
Release 24 STANDARD 1.1 January 2015
DNS
Domain Name Service (Server). An IP
service that associates a domain name
(such as www.example.com) with an IP
address.
DOCSIS
Data Over Cable System Interface
Specification. The interoperability
standards used for data communications
equipment on an HFC network.
Downstream
In an HFC network, the direction from
the head-end to the subscriber. Some
older cable documentation may refer to
this as the forward path.
E
EMTA
Embedded Multimedia Terminal
Adapter. An MTA device that is
integrated with a cable modem.
Ethernet
A standard method of connecting two or
more computers into a Local Area
Network (LAN).
EuroDOCSIS
The European version of DOCSIS.
Event
An informational message used for
monitoring network status.
F
F-connector
The type of connector used on coax cable.
There are two common types of F-
connector, slip-on and screw-on. Use
coax with screw-on connectors for
connecting your Telephony Gateway.
Firewall
A hardware or software device that
prevents unauthorized access to a private
Touchstone TG2472 Telephony Gateway User Guide 41