Cisco 1720 Hardware Installation Manual page 27

Chapter 1 Cisco 1700 Router Overview
Table 1-3 Front-Panel LEDs (Continued)
LED Label Color
WICØ
ACT/CHØ Green
ACT/CH1 Green
WIC1
ACT/CHØ Green
ACT/CH1 Green
78-5405-03
Description
Serial and DSU/CSU cards—Blinks when data is being sent to or received from
the port on the card in the WICØ slot.
ISDN cards—On solid when the first ISDN B channel is up for the card in the
WICØ slot.
2-port serial cards—Blinks when there is data being sent to or received from the
first port on the 2-port card in the WICØ slot.
Serial and CSU/DSU cards—Remains off.
ISDN cards—On solid when the second ISDN B channel is up for the card in the
WICØ slot
2-port serial cards—Blinks when there is data being sent to or received from the
second port on the 2-port card in the WICØ slot.
Serial and DSU/CSU cards—Blinks when data is being sent to or received from
the port on the card in the WIC1 slot.
ISDN cards—On solid when the first ISDN B channel is up for the card in the
WIC1 slot.
2-port serial cards—Blinks when there is data being sent to or received from the
first port on the 2-port card in the WIC1 slot.
Serial and DSU/CSU cards—Remains off.
ISDN cards—On solid when the second ISDN B channel is up for the card in the
WIC1 slot.
2-port serial cards—Blinks when there is data being sent to or received from the
second port on the 2-port card in the WIC1 slot.
Cisco 1700 Router Hardware Installation Guide
1-7