You can override other calls by making a priority call with precedence. You can manually dial the extension number or select the extension from Contacts or Recents. The precedence level is valid for only one call session. The call precedence levels are:
FO: Flash Override. Highest precedence.
FL: Flash.
IM: Immediate.
PR: Priority.
Routine: Lowest precedence. Routine is highlighted on the call session line if no call is made within five minutes.
