Cisco Systems ONS 15600 manual TSC Card-Level Indicators, TSC Network-Level Indicators

Chapter 2 Card Reference

2.2.3 TSC Card-Level Indicators

2.2.3 TSC Card-Level Indicators

Table 2-3describes the functions of the card-level LEDs on the TSC card faceplate.

Table 2-3	TSC Card-Level Indicators
Indicator		Color	Definition
STAT		Red	Indicates a hardware fault; this LED is off during normal operation.
			Replace the card if the STAT LED persists. During diagnostics, the LED
			flashes quickly during initialization and slowly during configuration
			synchronization.
SRV		Green	The service mode of the card. Green indicates that the card is in use,
			amber indicates that the card is out of service, and off indicates that the
			card is either booting or has no power applied.
ACT/STBY		Green	The ACT/STBY (Active/Standby) LED indicates that the TSC is active
			(green) or standby (off).

2.2.4 TSC Network-Level Indicators

Table 2-4describes the functions of the network-level LEDs on the TSC card faceplate.

Table 2-4	TSC Network-Level Indicators
Indicator		Color	Definition
LINE		Green	Node timing is synchronized to a line timing reference.
EXTERNAL		Green	Node timing is synchronized to an external timing reference.
FREE RUN		Green	Node is not using an external timing reference. Indicated when the
			timing mode is set to an internal reference or after all external references
			are lost.
HOLDOVER		Amber	External/line timing references have failed. The TSC has switched to
			internal timing and the 24-hour holdover period has not elapsed.
ACO		Amber	The alarm cutoff (ACO) push button has been activated. After pressing
			the ACO button, the amber ACO LED turns on. The ACO button opens
			the audible closure on the backplane. The ACO state is stopped if a new
			alarm occurs. After the originating alarm is cleared, the ACO LED and
			audible alarm control are reset.

Cisco ONS 15600 Reference Manual, R7.2

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