Figure 52. Boot Block Status Screen; Boot Block - ADTRAN HDSL2 Installation And Maintenance Practice

Control Port Operation

Boot Block

The Boot Block Status screen
in rare cases can become locked. If locked, the bootcode cannot be upgraded by future
firmware upgrades. The bootcode is seldom changed with new download code.
The bootcode is the small piece of code that allows firmware upgrades on the H4TU-C unit. If
the bootcode becomes corrupted, the H4TU-C will require factory service to restore it to a
functional state.
Shelf: 1
Unacknowledged Alarms:
50
(Figure 52) provides the status of the Boot Block sector, which
Slot: 17 Total Access System
MAJOR
Circuit ID:
Boot Block Status = OK (not locked)

Figure 52. Boot Block Status Screen

HDSL2 for General Distribution Installation and Maintenance Practice
INFO
03/01/05 10:59
61223HDSL2L2-5B