Section 150-232-100
Revision 01
Page 66
TABLE 23. ADDITIONAL HLU 4-CHARACTER FRONT PANEL MESSAGES FOR PROTECTION OPERATION
Message
Full Name
Description
PROT
Switched State
Displayed on Protection HLU only. This minor alarm indicates that the protection
line unit has switched states and the DS1 data is transported over the protection
circuit.
PROR
Protection Remote
Displayed on Protection HLU only. This minor alarm is generated whenever the
protection line unit does not receive positive confirmation that the HRU has
switched or reverted when requested.
HBER
Excessive HDSL
Bit Error Rate
This minor alarm is generated on either the Primary or Protection HLU
whenever the HLU determines that its current BER exceeded the minimum BER
threshold set by the user.
MPRO
Manual Protect
Mode
Displayed on Protection HLU only. Indicates that the Manual Protect mode has
been activated either from a dumb terminal or from the front panel.
MDIS
Manual Disable
Mode
Displayed on Protection HLU only. Indicates that the Manual Disable mode has
been activated either from a dumb terminal or from the front panel.
APRO
Auto Protect Mode
Displayed on Protection HLU only. Indicates that Auto Protect mode has been
activated from either an ASCII terminal or from the front panel. This mode
enables the HLU to execute the “monitor” and “switched” state functions.
AHLD
Auto Hold Mode
Displayed on Protection HLU only. Same as APRO mode (above) except that
PROTECT circuit remains on-line (non-reverting) once switchover occurs.
NORM
Normal Mode
Displayed on Protection HLU only. Indicates the Protection system capability is
disabled and the HiGain units are operating as two separate “Normal”
unprotected units.
