Installation Instructions

Operations and Maintenance
bottom of the CRI rack mount (subrack) or to the collection bar
located in the CRI floor mount (cabinet).
5 Fault Detection and Alarms Reporting
Fault detection is implemented through routine monitoring and fault and
alarm reporting.
5.1 Routine Monitoring
The RBS 884 Pico (1900 MHz) normally supervises and removes faulty
hardware from service when a fault is detected. Th
e operator can manually
remove (block) hardware from service and manually test it if needed.
If hardware faults are detected as a result of the supervision function, the
information concerning the fault is stored in t
he hardware malfunction log.
This information can be printed on command. If a major fault is detected, the
system automatically blocks and resets the device.
Proprietary non-leased communicati
on is not supervised point to point
at each end of the link by the system software. Higher level supervision
functions, such as the Transcoder Board-Radio Transceiver (TRAB-TRX)
supervision, can help identify pro
prietary transmission faults. LEDs on the
ELI unit and on the Radio Head customer interface indicate transmission
faults. These indicators provide standard T1 or E1 alarms such as loss of
signal and loss of framing.
5.2 Fault and Alarm Reporting
Multicolor LED indicators on the CRI equipment and the Radio Head
indicate if a fault or alarm
has occurred. Alarms indicate a specific fault
or a situation where the operation has degraded.
LEDs on the following CRI hardware units indicate if a fault or alarm
has occurred:
• Cabinet Identification (CID) unit
• Fan unit
• Direct Current/Direct Current (DC/DC) converter unit
6-6 1/1541-AE/LZB 119 3834 Uae Rev PA6 2001-04-04