Rear Panel Leds - Cisco 1603R User Manual

Rear Panel LEDs

Rear Panel LEDs
Table A-4 describes the rear panel LEDs. For illustrations of these LEDs and the rear panel
of the routers, refer to Figure 1-2 through Figure 1-5 in the "Overview of the Router"
chapter.
Table A-4 Rear Panel LED Functions
LED
All Models
LNK
(next to ETHERNETØ 10BASET)
OK
(next to FLASH PC CARD slot)
Cisco 1601
RDY
Cisco 1602
LOOPBACK
ALARM
CARRIER
Cisco 1603
OK
(next to ISDN BRIØ S/T port)
A-14 Cisco 1600 Series Router Hardware Installation Guide
Color Description
Green Indicates 10BaseT link integrity. This LED is not on when
connected to an Ethernet network through the AUI port.
The Cisco 1605 has two LNK LEDs, one for each Ethernet
10BaseT port.
Green The Flash PC card is correctly installed.
Green A serial port cable connection has been made to a modem or
DSU/CSU.
Yellow The DSU/CSU is in DSU or CSU loopback mode.
Yellow An alarm condition exists on the DSU/CSU port.
Green Indicates line synchronization or connection on the DSU/CSU
port.
Green A physical connection has been established with the ISDN
central office switch.