Grandstream - Strange Behavious with Phone lights

[sun]

I have a grandstream adapter for a while (more than 6 months). Normally, the power & LAN lights are on always. And phone 1 & phone 2 lights will turn on when they are in use. Recently, I have noticed Phone 1 & 2 lights seem to blink (alternate between 1 & 2) constantly even when both lines are idle.

Has anyone seen this behavior?

I haven't changed any setup/config since I setup this adaptor few months ago.

Any ideas/suggestions appreciated. Thanks.

[algair29]

Im new with voipo but i can tell you my adapter is doing the same thing both lights flash on intervals of a second one after the otherone but the phone line is still working fine.

[pflueger41]

I get those lights when I receive a recorded voice message. Once the message is deleted they will go away.

[VOIPoTim]

I get those lights when I receive a recorded voice message. Once the message is deleted they will go away.

Yeah, this is just the voicemail notifier letting you know visually that you have voicemail.

[sun]

Lights are back to normal after I deleted all VMs. Thanks.