Allied Telesis AT-iMG646PX-ON - Manual (Page 22)

Chapter 1: Overview
22
The operation of the WAN LED varies depending upon the unit, as
described in Table 3 and Table 4.
Table 3. WAN LED on the ATiMG646BD-ON
State Description
Off A WAN link has not been established.
On A WAN link has been established.
Table 4. WAN LED on the ATiMG646PX-ON
State Description
Off No optical signal detected.
Solid Amber An optical signal has been detected.
Solid Green The unit has been registered by OLT.