Systems and methods for characterizing loop termination via single-ended line testing

A system for determining a state of loop termination of a loop, comprising:

• a first module coupled to the loop, the first module configured to generate a test signal and receive an un-calibrated echo response of the loop;
• and
• a second module configured to receive the un-calibrated echo response measurement from the first module, wherein the second module is further configured to receive input data indicating a region, platform type, and a loop length estimate and determine whether the loop is open terminated or short terminated based on phase of the un-calibrated echo signal.

A method for determining a state of loop termination of a loop under test, comprising:

• receiving an un-calibrated echo signal for the loop under test using frequency domain reflectometry single-ended line testing (FDR-SELT);
• and
• determining the state of loop termination based on phase of the un-calibrated echo signal, wherein determining the state of loop termination comprises determining whether the loop is terminated by an open termination or a short termination by correlating the phase of the echo signal with an expected phase of the echo signal derived from measurements taken at the same loop length for open and short terminations.