Glossary
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 Data 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 Data
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.
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 Data Gateway.
Firewall
A hardware or software device that
prevents unauthorized access to a private
network from the Internet. The DG2470
provides a built-in firewall.
Release 24 STANDARD 1.3 February 2015
Touchstone DG2470 Data Gateway User Guide 35
