1.5.5.2 Line Preference—OutgoingDescriptionThrough personal programming (Preferred Line Assignment-Outgoing), PT users can select the outgoing linethey prefer to originate calls on when going off-hook, from the following line preferences:Line Preference DescriptionICM/PDN When an extension user goes off-hook, an extension line is selectedautomatically. If the extension is a PDN extension, the first availablePrimary Directory number (PDN) button is selected automatically.(® 1.7.1 Primary Directory Number (PDN)/Secondary DirectoryNumber (SDN) Extension)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. Theextension user must select 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.Conditions• Line Preference OverrideA user can override the preset Line Preference temporarily by pressing the desired Line Access button orMemory Dialling button (e.g., One-touch Dialling) before going off-hook.• To select Idle Line Preference, the trunk groups available to the extension should be programmed on aCOS basis. Also trunk groups available for Idle Line Access should be assigned.PT Programming Manual References[103] Idle Line Access (Local Access)[500] Trunk Group NumberUser Manual References3.1.2 Settings on the Programming ModeFeature Guide 891.5.5 Seizing a Line Features
