Cisco 1603R User Manual page 63

Table A-4 Rear Panel LED Functions (Continued)
LED
Cisco 1604
NT1
OK (next to ISDN PHONE port)
Cisco 1605
LNK
(next to ETHERNET1 10BASET)
OK
(next to WIC slot)
Color Description
Green A physical connection has been established from the router
internal NT1 to the ISDN central office switch.
Green The device connected to the router ISDN S/T port has
established a physical connection with the ISDN central office
switch.
Green Indicates 10BaseT link integrity for the Ethernet 1 port.
Green The WAN interface card is correctly installed in the router.
Rear Panel LEDs
Troubleshooting A-15