17 GLOSSARY |
|
TERM | DEFINITION |
bridge | An OSI layer 2 networking device that connects two LANs using |
| similar protocols. It filters frames based on the MAC address |
| to reduce the amount of traffic. A bridge can be placed |
| between two groups of hosts that communicate a lot |
| together, but not so much with the hosts in the other group. |
| The bridge examines the destination of each packet to |
| determine whether to transmit it to the other side. See also |
| switch. |
broadband | High bandwidth network technology that multiplexes |
| multiple, independent carriers to carry voice, video, data, and |
| other interactive services over a single cable. A communications |
| medium that can transmit a relatively large amount of data in a |
| given time period. A frequently used synonym for cable TV |
| that can describe any technology capable of delivering multiple |
| channels and services. |
broadcast | Simultaneous transmission to multiple network devices; a |
| protocol mechanism supporting group and universal |
| addressing. See also multicast and unicast. |
C |
|
TERM | DEFINITION |
CableHome | A project of CableLabs and technology suppliers to develop |
| interface specifications for extending |
| 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 |
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 refer to DOCSIS or |
| modems only. |
cable modem configuration file
File containing operational parameters that a cable modem or gateway downloads from the Internet Service provider TFTP server during registration.
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