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2.10.4 Second Call Notification to Busy Extension
PC Programming Manual References
10.6.3 PBX Configuration—[2-6-3] System—Numbering Plan—B/NA DND Call Feature
→ BSS / OHCA / Whisper OHCA / DND Override
→ BSS / OHCA / Whisper OHCA / DND Override-2
10.7.1 PBX Configuration—[2-7-1] System—Class of Service—COS Settings—Assistant—OHCA / Whisper
OHCA
Feature Manual References
5.1.1 Class of Service (COS)
Operating Manual References
1.9.3 Receiving Call Waiting (Call Waiting/Off-hook Call Announcement [OHCA]/Whisper OHCA)
2.10.4.4 Whisper OHCA
Description
An extension user can send a spoken message to a busy extension that will be heard directly by only the
called extension user, through the handset, without interrupting the ongoing conversation. The caller cannot
hear the ongoing conversation or the called extension user's reply, unless the called extension user puts the
current 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-DT300 series
–
KX-DT500 series
–
IP-PT
•
If the Whisper OHCA feature cannot be used due to COS or telephone type, the Call Waiting tone will be
sent to the called extension. (→ 2.10.4.2 Call Waiting Tone)
•
To receive Whisper OHCA on an IP-PT, the preferred codec must be either G.711 or G.729A. When an
extension user is on a call using the G.722 codec and receives Whisper OHCA, he will hear the Call
Waiting tone instead. (→ 2.10.4.2 Call Waiting Tone)
•
If the called extension does not use a KX-DT300 or KX-DT500 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., The
voice may be heard by the other party.)
•
When a non-IP extension is connected to a non-IP trunk and the extension receives Whisper OHCA,
Whisper OHCA will not function. The extension user will hear the Call Waiting tone instead.
(→ 2.10.4.2 Call Waiting Tone)
•
While an extension is receiving Whisper OHCA, if the extension user places the current trunk call on hold
or transfers the current intercom call or trunk call, Whisper OHCA will become disabled and the calling
extension will start to hear a ringback tone.
•
While an extension is receiving Whisper OHCA, if the extension user places the current intercom call on
hold, the called extension can talk to the calling extension through the handset.
136
Feature Manual
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