PN 365-095-33947 x.1
SBV2402 Internet & Voice cable modem for Xfinity® customers user guide
32
Chapter 9
Glossary
No problem
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 cable used for gigabit
ethernet (1000Base-T) connections. When
purchasing ethernet cables, always look
for a category 5e cable or higher.
Coaxial cable (coax)
A thin wire used to connect your television
and SBV2402 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 into the
SBV2402; 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 service
provider to configure your computer’s
networking software for you.
DNS
Domain name service
(server). An IP
service that associates a domain name
(such as
) 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 multi-media terminal
adapter
. An MTA device that is
integrated with a cable modem.
