1.8.4.2 Call Waiting ToneDescriptionWhen an extension user attempts to call a busy extension (ringing or having a conversation), the Call Waitingtone can be sent to the called extension to let him know another call is waiting.Conditions• This feature only works if the called extension has activated Call Waiting. If it is activated, the callingextension will hear a ringback tone.• Call Waiting tone can be selected (Tone 1 or Tone 2) through personal programming (Call Waiting ToneType Selection).PC Programming Manual References4.4 [2-3] Timers & Counters—Miscellaneous— Caller ID—Visual Caller ID Display4.10 [2-6-3] Numbering Plan—B/NA DND Call Feature→ BSS / OHCA / Whisper OHCA / DND Override→ BSS / OHCA / Whisper OHCA / DND Override-26.1 [4-1-1] Wired Extension—Extension Settings→Option 2— Manual C. Waiting for Extension Call→Option 2— Automatic C. Waiting→Option 4— Call Waiting Tone Type6.10 [4-2-1] Portable Station—Extension Settings→Option 2— Manual C. Waiting for Extension Call→Option 2— Automatic C. Waiting→Option 4— Call Waiting Tone TypeUser Manual References1.8.3 Receiving Call Waiting (Call Waiting/Off-hook Call Announcement [OHCA]/Whisper OHCA)3.1.2 Settings on the Programming Mode124 Feature Guide1.8.4 Second Call Notification to Busy Extension