Line 2 Facility Loopback :This OID operates a Line 2 Facility Loopback, looping line 2 input signal on the line 2 output port. The loop is located on the line 2 transceiver. If the Line signal carries DCC, the management network is impacted <Help> This maintenance parameter operates a Line 2 Facility Loopback, looping line 2 input signal on the line 2 output port. The loop is located on the line 2 transceiver. If the Line signal carries DCC, the management network is impacted