[3.01] Speed Dial numbers have the option of dialing out over an extension's Prime Line (in addition to using the Intercom, Line, or Line Group selections). The Prime Line option is chosen when setting up the Speed Dial entry from either user or system programming. When the user selects the Speed Dial entry, the system will access the extension's Prime Line and dial the stored number.
The Prime Line option is available for both System and Personal Speed Dial. To select the Prime Line option for a Personal Speed Dial entry, the user dials * instead of selecting Intercom, Line, or Line Group.
If the Speed Dial entry has Prime Line specified, and the extension is using Intercom Prime Line, the stored number will dial out over the "dial 9" line group.