Chapter 1 Cabling the VPN Router and turning the power on 35Nortel VPN Router Installation — VPN Router 175056/64K CSU/DSU WAN interface card LEDsFigure 8 shows the LEDs on the 56/64K CSU/DSU WAN interface card.Figure 8 LEDs on the 56/64K CSU/DSU WAN interface cardTable 9 describes the LEDs on the 56/64K CSU/DSU WAN interface card.Table 9 LED indicators on the 56/64K CSU/DSU WAN interface cardLED DescriptionBlue The blue alarm LED is lit when the interface card detects a DDSout-of-frame (OOF) condition on the receive signal.Red The red alarm LED is lit when the interface card detects a DDS loss-of-signal (LOS) or loss-of-frame (LOF) condition on the receive signal.Yellow The yellow alarm LED is lit when the interface card detects a DDSout-of-service condition on the receive signal. (This LED indicates thatthe far-end equipment detects a local LOS or LOF condition.)Green The green LED is lit when the interface card receives valid DDS signaland framing (this LED indicates normal operation of the card.)All LEDs off The port is disabled.56/64KDDSBlue LEDYellow LEDRed LEDGreen LED
