Anyone know the code for turning on the MW light from an SLT port. The book says to dial the extension and then dial 8, however the book also says if vm is present that doing that will take you to vm rather than light the light. I can't find a code to turn the light on if there is voice mail. It looks like the integration on the third party voice mail is trying to dial # + Ext, but I don't know if that is right.

Is it true that if you set VM to "E" then you cannot light a light? Is there any way around this?