Voicemail willnot clear light flaches - Vtech Lands Phones

To remove the voicemail indicator and stop the flashing light on your Panasonic home phone, you can try the following steps:
1. Access the voicemail system: Dial your home phone number from your Panasonic phone or another phone and let it ring until it goes to voicemail. Enter your voicemail password or follow the prompts to access your voicemail messages.
2. Listen to and delete all voicemail messages: Check your voicemail inbox for any new or saved messages. Listen to each message and follow the instructions to delete them. Ensure that your voicemail box is empty.
3. Exit the voicemail system: Once you have listened to and deleted all voicemail messages, exit the voicemail system by following the prompts or hanging up the call.
4. Reset the phone: Disconnect the power adapter from the back of your Panasonic phone base unit. Wait for about 30 seconds and then plug the power adapter back in. This will perform a reset on the phone and clear any residual indicators.
5. Check the voicemail indicator: After the phone has rebooted, check if the voicemail indicator is still active or if the light is still flashing. If the issue persists, proceed to the next step.
6. Disable visual voicemail feature (if applicable): Some Panasonic home phones offer a visual voicemail feature that may trigger the voicemail indicator and flashing light. To disable this feature, consult the user manual for your specific model and follow the instructions to turn off the visual voicemail function.
7. Contact Panasonic support: If you have followed the above steps and are still unable to remove the voicemail indicator or stop the flashing light, it's recommended to contact Panasonic customer support for further assistance. They can provide specific guidance based on your phone model and help troubleshoot the issue.
Remember to consult the user manual for your Panasonic home phone model as the steps and features may vary slightly.
this video might help

This may help;
P0300 Diagnostic Code Random Misfire

With the handset down on the phone. using the dialpad push 42 + Extension number of the phone that is flashing.

You have unheard messages on the voicemail system provided by your telephone company. This system records messages when someone calls while you're already on the phone. Please contact your telephone company for instructions on accessing their voicemail system.

It's stutter dialtone and indicates you have voicemail. Once you clear your voicemail the stutter tone will go away. You may also have a visual indicator that you have voicemail like a light or icon on the display.

Hello,
There might be another voicemail box associated with your extension. Hang-up the receiver and press the voicemail button. It should tell you where the voicemail is sitting. If you do not know the passcode for that voicemail, have your system admin take a look at it.

Try Feature 99 Feature. This will clesar the large LED

try caling your voicemail and leave yourself a message and clear all messages in box.

You guys had the owner manual scanned on your web site so I just RTFM ;~).

To clear the voicemail light on the base unit, first press the Redial button on the phone, then hold down the Clear button on the phone for a few seconds. The light should go out.

Here's a tip: I wrote down the above instructions on a small piece of paper and taped them to the back of the phone. You could also tape the note on the inside the battery door.

at the command line of the system,execute clear amw all plus the specific extension number then press enter.