The 2 Wire 2701HG-B has line monitoring capabilities it monitor's signal to noise ratio, attenuation, power levels, max attainable line rate. Click here to learn more about line statistics, what is being measured, and recommended values.
Open a browser and type 192.168.1.254/mdc in the address field to access the 2Wire Management and Diagnostic Console Interface.
The links on the left side lead to the many pages of the Management and Diagnostic Console Interface.
Under the Broadband Link section click on the Statistics link.
There are other pages that can be useful for troubleshooting