Message waiting indicator light is on but there are no messages

Message Waiting Indicator Your phone's message waiting indicator is either a light or special tone that alerts you when you have voice mail.

Occasionally, the message waiting indicator may be out of sync with your mailbox. In that case, the indicator light or tone is ON but there are no messages waiting, or the indicator light or tone is OFF when there are new messages waiting.

To get the message indicator back in sync

1. Save or delete all new messages
2. Hang up.
3. If the message indicator does not go out or stop within a few minutes, there may be a problem, and you should contact Verizon.
4. If the message indicator does go out or stop, call your own number and leave a message
5. Hang up and wait
6. If the indicator light or tone does not come on within a few minutes, there may be a problem, and you should contact the vender.

you have to log in to your account at the phone service provider and reset message waiting indicator. If you have a contract company managing your ip phone service, call them, and say you need the message indicator reset.

From att.com:

Q: What should I do if I my Message Waiting Indicator, stutter dial tone or light on my phone, is on but I have no new voice messages?
A: Make sure to check all message types when reviewing your messages (i.e. voice, email and fax).
Q: What should I do if my Message Waiting Indicator (MWI), stutter dial tone or light, is stuck on?
A: Power cycle (turn off/on) the Phone or Customer Premise Equipment (CPE).

There is another reason you are having the message waiting indicator besides having a message waiting, it also means the phones messages are full and some messages need to be deleted. Once you have deleted some messages, then you will be able know if you have any message waiting or its just a symbol to show that your message is full.
Hope this information helped

That is the message waiting indicator, it is telling you that your Call Notes (Or whatever your service provider calls it's voicemail) has a message waiting. If you do not have a message waiting, you can turn the light of by following these steps:

Resetting the voice message waiting indicator
When you receive a new voice mail message, the new message LED on the top of the handset flashes and
appears in the handset display. In the event your message waiting light gets out of sync with your phone company’s
voice messaging system, you can manually reset it back to the “No messages waiting” state.
Press and hold FIND on the base for five seconds.
Note: The handsets connected to the base will start to beep, however, keep pressing for five seconds.
A beep sounds and the message alert tone is reset.

The term we used for this back when I worked for the phone company was a "stuck message waiting indicator" and the way to fix it was:

Call yourself and leave a message.
Hang up and wait 2 minutes (we used to say 5 minutes, but 2 is plenty)
Retreive/delete your voice mail message
Hang up and wait 2 minutes


That should clear the blinking light.

This feature is country dependent and may not
appear in some countries.
If you have subscribed to the voicemail service
from your local service provider, icon turns
on when you have a new message in your
mailbox. After you have accessed to all the new
messages, icon will turn off automatically. If
you find that the message waiting indication
cannot be turned off by the network, you can
still turn off the message waiting indication with
your phone by the following step :

In idle mode, if voice mail waiting icon is on,
long press the redial key to turn off the voice mail waiting
icon.
Once you choose to delete the message waiting
indication, all the other handsets registered to
the same base station will turn off the message
waiting indication accordingly.

There is no History button that I know of ~ on the system...

But - the message waiting indicator is not working?
Ok, try this to fix the message waiting... leave a voicemail for yourself or get someone to leave a message. FEATURE 1 and your extension...

-> if the light is Not flashing try FEATURE #806 this shuts off static time and date, for some reason this can shut off the message waiting indicator.

Slide the Nortel Grey Bar above the Hold & Rls buttons to reveal the setup button.

1. Hit that button to show *Options List / # Setup list
2. Press * to go into options.
3. Use the arrow buttons or hit 3 to go into CLEAR MESSAGE WAITING
4. Then hit 3 again to clear the message waiting

This should resolve the blinking light.

I have a jwin jt-p590 and I have no idea how to use the voicemail/answer machine it's equipped with. Is there some sort of button scheme I'm supposed to press. I threw away the manual to it. Sorry I don't have an answer for your problem, but you seem pretty witty from the answers I saw you give to other ppl. I'd really appreciate it if you could help me out.