ADTRAN 6304W Configuration Manual page 52

LED Descriptions
4
LED Descriptions
TABLE 2-1.
LED Status
Link 1-4 On
Blinking
Off
Voice 1-2 On
Blinking
Off
USB On
Blinking
Off
Description
Link is connected and operational.
Data is being transmitted.
Link is disconnected.
Voice is connected and operational.
Data is being transmitted.
Voice is disconnected.
USB is connected and operational.
Data is being transmitted.
USB is disconnected.
6304W Installation Guide