SMC Networks BARRICADE SMC7901WBRA2 B1, User Manual

Page: 65 / 150

C
HAPTER
5
| WAN Configuration
ADSL Settings
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Undo — Undoes any altered parameters made if the Apply Changes
button has not been clicked.
ADSL S
ETTINGS
The ADSL Settings page configures the ADSL modulation type, ADSL2+
related parameters, capabilities and the ADSL tone mask.
Figure 30: ATM Settings
The following items can be enabled on this page:
ADSL M
ODULATION
ADSL Modulation refers to a frequency-division multiplexing (FDM) scheme
utilized as a digital multi-carrier modulation method for DSL. A large
number of closely-spaced orthogonal sub-carriers are used to carry data.
The data is divided into several parallel data streams or channels, one for
each sub-carrier. Each sub-carrier is modulated with a conventional
modulation scheme (such as G.lite, ADSL2, etc. or more commonly
ADSL2+).
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G.lite — A standard that defines the more economical splitterless ADSL
connection that transmits data at up to 1.5 Mbps downstream and 512
Kbps upstream. This ADSL option can be installed without an on-site
visit by the service provider.