Appendix A: Glossary
RJ-45 A standard 8-conductor modular connector, commonly used
on Ethernet cable. An RJ-45 connector looks like a wide RJ-11
(telephone) connector.
Splitter A small box with three cable connectors: one input and two
outputs. You may need a splitter if you have a TV already
connected to the cable outlet that you want to use for your
Telephony Gateway. You can buy a splitter from any electronics
retailer and most discount stores.
SSID Service Set IDentifier. A string of text (up to 32 characters long)
that uniquely identifies a wireless LAN.
Switched outlet A power outlet that may be turned on and off using a wall
switch. Usually intended for lamps. Avoid plugging your
computer or Telephony Gateway into a switched outlet to avoid
disruptions.
TCP/IP Transmission Control Protocol/Internet Protocol. The protocols
used to facilitate communications across one or more connected
networks.
TDMA Time Division Multiple Access. A method used by DOCSIS-
compliant cable modems for sending upstream data with
minimal interference.
Upstream The path from a subscriber device to the headend. Some older
cable documentation may refer to this as the return path or
reverse path.
WEP Wired Equivalent Privacy. A common standard for encrypting
data sent over a wireless LAN.
WPA Wi-fi Protected Access. A standard for encrypting data sent over
a wireless LAN. WPA offers improved security over WEP.
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