Cisco Systems manual PA-4T+ Port LEDs, LED Label, Color, State, Function

LEDs

If any of the above conditions are not met, or if the initialization fails for other reasons, the enabled LED will not go on. Table 1-8 lists port LED status indications.

Table 1-8	PA-4T+ Port LEDs
LED Label	Color	State	Function
EN	Green	On	Indicates ports are ready.
TD	Green	On	DTE—Transmit data out.
			DCE—Transmit data in.
TC	Green	On	DTE—Transmit clock in.
			DCE—Transmit clock in (TXCE).
RD	Green	On	DTE—Receive data in.
			DCE—Receive data out.
RC	Green	On	DTE—Receive clock in.
			DCE—Receive clock out.
LB/CD	Green	On	Indicates DTR, DSR, RTS, CTS, or DCD is active.
	Green	Flashing	Indicates RTS, CTS, or DCD is sending and receiving
			data in half-duplex mode.
	Yellow	On	Indicates local loop or internal loop active.

1-16PA-4T+ Synchronous Serial Port Adapter Installation and Configuration