1.5 Assembling and Cabling WAN Components
1.5.7 Verifying branch-office installation
Each branch-office router has LED displays that allow you to verify that the router components are installed and functioning properly. On the Cisco 1603 or 1604, you can use the LEDs on the front of the router to determine router performance and operation, as shown in Figure . For a Cisco 1600, the system power and OK LEDs indicate that the router is on and has successfully booted.

The LEDs and their descriptions follow:

  • SYSTEM PWR -- The green system power LED indicates that the router is turned on and DC power is being supplied.
  • SYSTEM OK -- The green system OK LED indicates that the router has successfully booted. It blinks while in the boot cycle.
  • BRI 0 B1 -- The green B1 LED indicates an ISDN connection on B channel 1.
  • BRI 0 B2 -- The green B2 LED indicates an ISDN connection on B channel 2.
  • WIC CD -- The green WAN interface card connection LED indicates an active connection on the WAN interface card serial port.
  • WIC ACT -- The green WAN interface card activity LED indicates an active connection on the WAN interface card serial port.
  • LAN ACT -- The green LAN activity LED indicates that data is being sent to or received from the local Ethernet LAN.
  • LAN COL -- A flashing yellow LAN collision LED indicates frame collisions on the local Ethernet LAN.

The one-port serial WAN interface card has one LED (CONN), indicating that data is being sent over the WAN interface card serial port, as shown in Figure .