U.S. Robotics SureConnect ADSL Ethernet/USB Router User Guide
Contents:
US Robotics
SureConnect ADSL
Ethernet/USB Router
Configuration Utility
Summary
Web User Interface
Terminal User Interface
Command Line Interface
Configuration Examples
Installation
Uninstallation
Troubleshooting
Glossary
Regulatory Information
U.S. Robotics SureConnect™ ADSL Ethernet/USB Router User Guide
Windows 95, 98, NT 4.0, Me, 2000, XP or later, Mac and Linux
Glossary
A B C D E F GH IJKL M N OP QR S TU V WXYZ
A
ADSL (Asymmetric Digital Subscriber Line) - Transports information to and from customers and networks. ADSL employs different upstream and downstream data rates. The “asymmetric” name refers to these differing rates.
AH (Authentication Header) – RFC2402 defines AH. AH provides integrity and authentication through the shared key hashing algorithms
AM (Amplitude Modulation) Modulation method used by modems, radio, and DSL equipment. The signal modulates or alters the amplitude or intensity of the carrier. In regular AM, the carrier is a sinewave. The amplitude of the modulated carrier changes in proportion to signal amplitude. AM creates two identical sidebands on either side of the carrier. These sidebands contain the signal data. Either sideband can be attenuated or suppressed without harming the signal data. With an equivalent signal, AM tends to require less bandwidth than FM does. AM's disadvantage is that it’s more subject to impulse noise and static than FM is.
ATM (Asynchronous Transfer Mode) - Protocol that packs digital information into 53- byte cells. The cells switch throughout a network over virtual circuits.
Average Cell Rate - Maximum sustainable or average rate (Cells/second) for sending cells to the network. Average Cell Rate specifies bandwidth utilization. This value must always be less than or equal to Peak Cell Rate.
file:///P/T_WRITER/Documentation/Released/900...003%20(Guiness)%20prac%20template/glossary.htm (1 of 11) [11/6/2002 9:02:38 AM]
