ADTRAN HDSL2 - Manual (Page 51)

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation
61223HDSL2L2-5B 41
Troubleshooting Guidance
Selecting the option number associated with the Troubleshooting Guidance selection on the
Troubleshooting screen causes an H2TU-C module to read the operational status of the circuit
and return troubleshooting guidance to the probable cause of the trouble, as shown in
Figure
42 .
Figure 42. Troubleshooting Guidance
NOTE
The display on the Troubleshooting screens represent a single cir-
cuit problem, based upon a hierarchy within the software. Other
problems may exist.
Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45
Press ESC to return to previous menu
DSX-1 Loss of Signal(LOS) / Loss of Frame(LOF) (Red Alarm)
- Patch test set REC jack into H2TUC BRG TRANS jack to verify integrity of
signal to the H2TUC from the network (verify test set in Bridge mode).
- If signal to H2TUC is missing, insert test set at DSX panel IN Jack connecting
toward H2TUC (to verify wiring between DSX and H2TUC shelf). Check H2TUC to
verify DSX-1 LOS alarm is cleared. This verifies TX(out) and RX(in) pairs are
not swapped.
- If signal from DSX OK, verify cross-connect wiring at DSX panel is turned over
(OUT to IN) and (IN to OUT).
-If DSX wiring OK, connect test set REC to the DSX MON, network side equipment,
to verify signal from network (verify test set to MON). If no signal,
troubleshoot office problems.