1.1 AFeature Manual 21• This feature cannot be used for calls to a Voice Processing System (VPS).Programming ReferencesPC Programming Manual2.8.8 [2-6-1] Numbering Plan—Main—Features—Automatic Callback Busy Cancel2.8.10 [2-6-3] Numbering Plan—B/NA DND Call Feature—Automatic Callback BusyPT Programming ManualNoneOperating Manual References1.3.4 Automatic Callback Busy (Camp-on)1.1.5 Automatic Extension ReleaseDescriptionAfter going off-hook, if an extension user fails to dial any digits within a preprogrammed time period, the userwill hear a reorder tone. This operation applies to intercom calls only.This feature is also known as Automatic Station Release.Conditions• A proprietary telephone (PT)/portable station (PS) user hears a reorder tone for a preprogrammed timeperiod, and then the PT/PS returns to idle status automatically. A single line telephone (SLT) user willhear a reorder tone until he or she goes on-hook.• This feature works in one of the following cases:When making an intercom calla) The first digit is not dialed within a preprogrammed time period.b) A digit is dialed, but subsequent digits are not dialed within a preprogrammed time period.Programming ReferencesPC Programming Manual2.8.4 [2-3] Timers & Counters—Dial / IRNA / Recall / Tone→ Dial—Extension First Digit→ Dial—Extension Inter-digit→ Tone Length—Reorder Tone for PT Handset→ Tone Length—Reorder Tone for PT Hands-freePT Programming ManualNone