D-Link DSL-300 User Manual page 23

The data provided in the Advanced ADSL Information window includes:
Re_training – number of attempts to establish the ADSL connection
CRC – Cyclic Redundancy Checking, number of CRC errors since ADSL
connection established
FEC – Forward Error Correction, number of FEC errors since ADSL
connection established
HEC – Header Error Checking, number of HEC errors since ADSL
connection established
Line Attenuation – measured in dB
Noise Margin – measured in dB
Output Power – measured in dBm
The Carrier Information menu displays the frequency distribution of the
upstream and downstream bandwidth. The upstream portion occupies the lower
frequency block.
DSL-300 ADSL Ethernet Modem User's Guide
19