Methods are disclosed for testing cable pairs in a telecommunications network. One method connects a test line to a telecommunications switch. The test line is connected to an inactive cable pair. The inactive cable pair has no telecommunications service established for the cable pair. The connection between the test line and the inactive cable pair creates a signal path from the telecommunications switch to the inactive cable pair, thus allowing the inactive cable pair to be tested for faults. This method allows a telecommunications service provider to determine the condition of available, inactive cable pairs.