Question:
What are the local loop metallic testing thresholds for DC Open, Short, and Ground Fault?
Answer:
For HDSL2:
DC OPEN: Span current between Loop Tip and Ring < 5mA SHORT: Span current between Loop Tip and Ring > 150mA
GROUND FAULT: Impedance between high voltage conductors & ground < approximately 100kOhms
For HDSL4:
DC OPEN: Span current between Loop 1 and Loop 2 < 5mA
SHORT: Span current between Loop 1 and Loop 2 > 150mA
GROUND FAULT: Impedance between high voltage conductors ground < approximately 100kOhms
