How do you allow a call come to the main switchbd, then to the DN without having to press 0 for the operator who then dials the TN and the call goes thru. I need to set up a phone to do this and heard it was done thru Meridian Mail but don't know where. I looked at the mail account of a phone set that bypasses the operator but did not see anything that would allow this. Any help would be appreciated.