ADTRAN AHDSL2 - Manual (Page 28)

B-12 61221002L2-5B
NOTE
Prior to entering any loopback command, the line card must be removed from service.
Remove card from service = RMV-HDSL;
H2TU-C Network Loopback
Loop up command = OPR-LPBK-HDSL::RT-1-21-C:::NEND;
Loop down command = RLS-LPBK-HDSL::RT-1-21-C:::NEND;
H2TU-C Customer Loopback
Loop up command = OPR-LPBK-HDSL::RT-1-21-C:::FEND;
Loop down command = RLS-LPBK-HDSL::RT-1-21-C:::FEND;
H2TU-R Network Loopback
Loop up command = OPR-LPBK-HDSL::RT-1-21-R:::NEND;
Loop down command = RLS-LPBK-HDSL::RT-1-21-R:::NEND;
H2TU-R Customer Loopback
Loop up command = OPR-LPBK-HDSL::RT-1-21-R:::FEND;
Loop down command = RLS-LPBK-HDSL::RT-1-21-R:::FEND;
Upon completion of loopback testing, return the card to service.
Restore card to service = RST-HDSL;