Single V.35/X.21 WAN interface card LEDs

The following figure shows the LEDs on the single V.35/X.21 WAN interface card.

Figure 12 LEDs on the single V.35/X.21 WAN interface card

LED 1, Red	LED 2, Green
LED 4, Green	LED 3, Green

The following table describes the LEDs on the single V.35/X.21 WAN interface card.

LED	Indicator	Description

LED 1	Red	No external transmit clock source is available.

LED 2	Green	The signals CDC and DSR are on between the DSU
		and the adapter. LED 2 detects receive link status.

LED 3	Green	The power to the adapter is on and the onboard
		microcode is loaded.

LED 4	Green	A cable is detected.