Panasonic KX-TD816E, Installation Manual, Page: 216 / 600

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3 Features
3-104.2 Features
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ff-Hook Call Announcement (OHCA)
Description
OHCA allows you to inform a busy extension that another call is
waiting by talking through the built-in speaker of the called party’s
proprietary telephone. If the existing call is using the handset,
the second conversation is made with the speakerphone so that the
called party can talk to two parties independently. OHCA is
performed the same way as Busy Station Signalling (BSS) or
Whisper OHCA. It depends on the telephone type used by the called
party whether Call Waiting, OHCA or Whisper OHCA is activated
by the operation. If the called telephone is one of the following,
OHCA becomes active: KX-T7130, KX-T7235, KX-T7436.
Conditions
• Class of Service programming determines which extensions can
perform this feature.
• If none of three features, Call Waiting, OHCA or Whisper OHCA is set
at the called party, the caller will hear a reorder tone.
Programming References
Section 4, System Programming,
[100] Flexible Numbering, Call waiting / OHCA / whisper OHCA
[519] Off-Hook Call Announcement (OHCA)
Feature References
Section 3, Features,
Busy Station Signaling (BSS)
Whisper OHCA
Call Waiting
Operation References
DPT Features,
—User Manual
Off-Hook Call Announcement (OHCA)
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ff-Hook Monitor
Description
Allows the KX-T7431, KX-T7433, and KX-T7436 digital proprietary
telephone users to let the other users listen to the conversation
through the built-in speaker, while continuing the same call using the
handset.
Conditions
This is effective with a handset conversation.
Programming References
Section 4, System Programming,
[148] Off-Hook Monitor