Product Info

LED indicator conditions
DN9913495 © Nokia Corporation Draft 47 (52)
Issue 3-0 en Nokia Proprietary and Confidential
7 LED indicator conditions
In addition to the alarms a network element can produce, most functional units
also have three-colour LED indicators. These indicators display the current state
of the equipment for quick, on-site reference.
This chapter specifies the meaning of the LED conditions on the following units:
• transceiver unit
• transmission unit
• power supply unit
• interface unit
• fan unit
Inform your Operations Manager of any error situations detected on the units and
enter the details in the site report.
7.1 Transceiver unit LED
The conditions on the transceiver unit’s LED indicators are specified in Table 3.
Table 3. LED conditions for TRX units
LED Colour Lit continuously Flashing
Green In service
Traffic going through
In service
No traffic going through
Yellow/Orange No LapD Configuring, not in service
Red Unit broken Unit operation degraded