19216811.liveHeadend
The “central office” in an HFC network. The headend houses both video and
data equipment. In larger cable networks, a “master” headend often feeds
several “remote” headends to provide distributed services.
HTTP
HyperText Transfer Protocol.
Hub
A box with several Ethernet connectors. Ethernet hubs provide a common
point of contact for all connected devices.
IP address
A number assigned to your computer by your cable company, used to iden-
tify your computer to other systems on the Internet.
ISDN
Integrated Services Digital Network. A digital telephony standard that pro-
vides communication speeds about twice as fast as standard dialup.
LAN
Local Area Network. A network that allows computers in a single location
(such as a building) to communicate with one another.
LED
Light Emitting Diode. A semi-conductor diode that emits light when current
is passed through it.
MAC address
A number that uniquely identifies any device connected to a network. Your
cable company uses your Telephony Gateway’s MAC address to authorize
access to the Internet. The MAC address is printed on a label on the bottom
of your Telephony Gateway.
Protocol
A set of rules and formats that determines the communication behavior of
network entities at a given layer.
Xfinity TG1682 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
41