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Cisco 1750 Router Hardware Installation Guide
78-6169-02
Front-Panel LEDs
ACT
Green
–
Blinks when there is network activity on the Ethernet port.
COL
Yellow
–
Blinks when there are packet collisions on the local
Ethernet network.
SLOTØ
PORTØ
Green
ISDN
On when the first ISDN B channel is connected.
Serial and
CSU/DSU
Blinks when data is being sent to or received from the port.
2-port serial
VIC-2E&M
VIC-2FXO
VIC-2FXS
PORT1
–
Serial and
CSU/DSU
Off.
Green
ISDN
On when the first ISDN B channel is connected.
2-port serial
Blinks when data is being sent to or received from the port.
VIC-2E&M
VIC-2FXO
VIC-2FXS
Table 4
Front-Panel LEDs (continued)
LED
Color
Cards
Supported
LED Meaning