ADC 410F User Manual page 61

2 Configure the ADSL startup parameters.
‹
The Startup Option
the modem is reset. The following table describes the available options.
Startup Option
Adaptive at Startup
(default)
Fixed
Œ
Enter the
The default is
Startup SNR (Signal to Noise Ratio) margin is the margin the modem must achieve
to come up.
3 Configure the SNR margin threshold.

Enter the
default is
The margin threshold determines the SNR margin value below which the ADSL
MAR LED on the modem front panel turns off.
Megabit Modem 410F and 420F User Manual
determines how an ADSL transmission rate is established when
Description
The modems attempt to come up at the downstream and upstream
Max Data Rate (kbps) with a margin greater than or equal to the
Startup SNR Margin. If the data rates cannot be obtained, the
modems attempt lower data rates that are greater than or equal to
the downstream and upstream Min Data Rate (kbps) until sync
occurs. If the modems do not achieve the rates, they will not sync.
The modems attempt to come up only at the downstream and
upstream Max Data Rate (kbps) values with a margin greater than
or equal to the Startup SNR Margin. If the data rates cannot be
obtained, the modems continue to attempt the data rates. If the
modems do not achieve the rates, they will not sync.
Startup SNR Margin . The value can be any number between
4 .
Margin Threshold . The value can be any number between
3 .
Chapter 6: Configuring the Ports
0 and 15 dB.
0 and 15 dB. The
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