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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.
SLO
POR 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