What type of voice mail system?
Maybe your out of space, too many saved messages....when you delete them new ones become available.
Normally when you log in you can choose to play new messages or saved messages, they do not play automatically.
If you choose saved then I gather the system is mearly going through the cycle and playing new ones after, just choose New always.
As for the the light the system allows for sets to send sets a message.
"Poor man's voice mail"
If you do Feature 1 , 222 then 222's light/msg will go on
222 will then do Feature 65 to see who called - example on display "221 Called" or "Reception(sets name) called"
Feature #65 to clear the light/msg
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