1.8 Busy Line/Busy Party Features132 Feature Guide1.8.4.4 Whisper OHCADescriptionAn extension user can send a spoken message to a busy extension that will be heard directly by only thecalled extension user, through the handset, without interrupting the ongoing conversation. The caller cannothear the ongoing conversation or the called extension user's reply, unless the called extension user puts thecurrent party on hold and switches to the waiting caller.Conditions• COS programming determines which extensions can use this feature.• This feature is available when the calling and called extension use one of the following telephones:– KX-T7600 series– KX-T7500 series– KX-T7400 series (except KX-T7451)– IP-PT• If the Whisper OHCA feature cannot be used due to COS or telephone type, the Call Waiting tone willbe sent to the called extension. (→ 1.8.4.2 Call Waiting Tone)• If the called extension does not use a KX-T7600, KX-T7500, or KX-T7400 series telephone or an IP-PT, but forces Whisper OHCA, the announcement may be heard by the other party.• It is possible to enable Whisper OHCA on any telephone. However, it may not work properly. (e.g., Thevoice may be heard by the other party.)• While an extension is receiving Whisper OHCA, if the extension user places the current trunk call onhold or transfers the current intercom call or trunk call, Whisper OHCA will become disabled and thecalling extension will start to hear a ringback tone.• While an extension is receiving Whisper OHCA, if the extension user places the current intercom callon hold, the called extension can talk to the calling extension through the handset.Programming Manual ReferencesPC Programming Manual2.8.10 [2-6-3] Numbering Plan—B/NA DND Call Feature→BSS / OHCA / Whisper OHCA / DND Override→BSS / OHCA / Whisper OHCA / DND Override-22.8.11 [2-7-1] Class of Service—COS Settings—CO & SMDR—OHCA / Whisper OHCAPT Programming ManualNoneFeature Guide References2.2.1 Class of Service (COS)User Manual References1.8.3 Receiving Call Waiting (Call Waiting/Off-hook Call Announcement [OHCA]/Whisper OHCA)
