1.5 Making Call FeaturesFeature Guide 831.5.5.2 Line Preference—OutgoingDescriptionA PT user can select the outgoing line he prefers to originate calls on, from the following linepreferences, through personal programming (Preferred Line Assignment—Outgoing):Conditions• Line Preference OverrideA user can override the preset Line Preference temporarily by pressing the desired LineAccess button or Memory Dialling button (e.g., One-touch Dialling) before going off-hook.• To select Idle Line Preference, the trunk groups available to the extension should beprogrammed on a COS basis ( Trunk Group Number [500]). Also trunk groups availablefor Idle Line Access should be assigned ( Idle Line Access (Local Access) [103]).User Manual ReferencesUser Manual3.1.2 Settings on the Programming ModeFeature DescriptionIntercom When an extension user goes off-hook, an extension line is selectedautomatically.Idle Line When an extension user goes off-hook, an idle trunk is selectedautomatically from the assigned trunk groups.No Line When an extension user goes off-hook, no line is selected. He mustselect the desired line to make a call.Prime Line When an extension user goes off-hook, the preset line is selectedautomatically. A prime line can be selected from the Line Accessbuttons: S-CO, G-CO, L-CO, ICD Group.