9696d660_Exchange_Voice_Mail_User_Guide__Description
[Feature] Personal Operator (In other voice mail systems, this is called zero out, personal attendant, or transfer to operator) [How to Enable or Disable] Send a request to itcom.csr.evm@umich.edu [Description] 
Allows your callers to transfer to one other phone, such as a cell phone, including long distance numbers, while listening to your mailbox greeting.
ITS Exchange Voice Mail User Guide
Description