Allows you to alert other stations you have a message for them.  If they have a multi-line phone with a message waiting lamp, it will be lit.  If they do not have a message waiting lamp they will hear stutter dial tone.  Also used to alert you that there are messages in your voice mail box.

TO SET: Press Intercom.  Call another extension  When you receive busy tone or no answer, press the MESSAGE key.  You will hear confirmation tone, hang up.  Message light on other phone is now lit or they hear stutter dial tone.

TO ANSWER: When your MWL (Message Waiting Light)  is on, press INTERCOM and MESSAGE.  The system will call the station that lit your light.  That station could be another person or the voice mail system or both.  So if you check your voice mail messages and the light stays on, more than likely another person turned your MWL on.   Press INTERCOM and MESSAGE again.  When (and if) they answer, the message waiting light is cleared.

  If they do not answer, the light is NOT cleared.  To the system, you have not received the message until you talk with the person, thus the light stays on.  If they do answer, and the light remains on, someone else has left you a message waiting light.  Repeat the above procedure or use the clear feature below.

  Voice mail users.  If you listen to your messages and the light stays on, usually someone has inadvertently lit your light. You can use the above procedure to clear the lamp or the use the feature listed below.