Grandstream Networks GXW4216

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GXW42xx User Manual
Version 1.0.15.30
10M: LINK and ACT all blink, ACT blinks faster than LINK
100M: LINK and ACT all blink, ACT blinks the same fast as LINK
1000M: LINK does not blink, only ACT blink
 Slow blinking of FXS LED together indicates a firmware upgrade or provisioning state.