Motorola SBG900 User Manual page 113

Overview Installation Troubleshooting Contact
C
CableHome A project of CableLabs and technology suppliers to develop interface specifications for extending
high-quality cable-based services to home network devices. It addresses issues such as device
interoperability, QoS, and network management. CableHome will enable cable service providers to
offer more services over HFC. It will improve consumer convenience by providing cable-delivered
services throughout the home.
CableLabs A research consortium that defines the interface requirements for cable modems and acknowledges
that tested equipment complies with DOCSIS.
cable modem A device installed at a subscriber location to provide data communications over an HFC network.
Unless otherwise specified, all references to "cable modem" in this documentation refers to DOCSIS
or Euro-DOCSIS cable modems only .
cable modem File containing operational parameters that a cable modem or gateway downloads from the cable
configuration service provider TFTP server during registration.
file
circuit-switched Network-connection scheme used in the traditional PSTN telephone network where each connection
requires a dedicated path for its duration. An alternative is packet-switched.
Class C network An IP network containing up to 253 hosts. Class C IP addresses are in the form
"network.network.network.host."
client In a client/server architecture, a client is a computer that requests files or services such as file transfer,
remote login, or printing from the server. Also called a CPE.
On a wireless LAN, a client is any host that can communicate with the access point. A wireless client
is also called a "station."
CMTS A cable modem termination system is a device in the cable system headend that interfaces the HFC
network to local or remote IP networks to connecting IP hosts, cable modems or gateways, and
subscribers. It manages all cable modem bandwidth. It is sometimes called an edge router.
CNR carrier to noise ratio
coaxial cable A type of cable consisting of a center wire surrounded by insulation and a grounded shield of braided
(coax) wire. The shield minimizes electrical and radio frequency interference. Coaxial cable has high
bandwidth and can support transmission over long distances.
CoS Class of service traffic management or scheduling functions are performed when transferring data
upstream or downstream on HFC.
CPE Customer premise equipment, typically computers, printers, etc., are connected to the cable modem
or gateway at the subscriber location. CPE can be provided by the subscriber or the cable service
provider. Also called a client.
crosstalk Undesired signal interfering with the desired signal.
CSMA/CD carrier sense multiple access with collision detection
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