2.17  

Whisper/Off Hook Announcement 
 
Implementing features, see also Manager E Whisper/Off Hook Announcement

Definition  
The "Whisper/Off Hook Announcement" feature allows stations (station C in the illustration) to monitor an existing call between two stations (stations A and B in the illustration), and to pass on information to one of these stations (A). In other words, the connection is switched in such a way that only station A hears station C, and station B only hears A.
Although there is no connection between station B and station C, user B may be able to hear the muffled tones of what user C is saying because of feedback on station A.  
The feature is activated by station C by dialing a code. There is a partially assigned key on the telephone (only the code is assigned to the key, the phone number must be dialed). A new menu item will be incorporated into the Service menu, the Idle/Call menu will remain unchanged.
The option for activating the feature is linked to a new, user-specific class of service. A second class of service can be used to protect station A from Whisper/Off Hook Announcement.
The feature is deactivated by the activating station (station C) or by modifying the features, but NOT through a separate code.

Restrictions  
 •   If at least one station in the original call (station A or B) is not a TDM station, the HiPath switching network is not yet involved at the time of activation and the switchover cannot be performed without a brief interruption in the call between A and B.
 •   Stations A and C must be in the same node.
 •   The feature can only be activated by station C from the idle/ready state.
 •   Only telephones with a display that can be controlled by the system (optiPoint, OpenScape Personal Edition, OpenStage TDM) can function as destination telephones for Whisper/Off Hook Announcement (station A). Analog telephones cannot function as destination telephones for Whisper/Off Hook Announcement.
CMI is not supported in HiPath 4000.

Model-Specific Data  

 Subject  
 HiPath 3800  
 HiPath 3550  
 HiPath 3500  
 HiPath 3350  
 HiPath 3300  
Feature available in  
 x  
 x  
 x  
Hardware requirements  
 TDM telephone with display  
Software requirements  
 V6.0 or later  
 V6.0 or later  
 V6.0 or later  

Dependencies/Restrictions  
Just as with the feature Silent Monitoring, Whisper/Off Hook Announcement is only permitted if the call between station A and station B is a simple connection between two stations. The Whisper/Off Hook Announcement feature cannot be used for consultation calls or conference calls.
If the Whisper/Off Hook Announcement feature is active and station A or station B initiates another call-related feature, the Whisper feature will be deactivated. The table below provides further information on interaction with particular features:

 Feature  
 Station A  
 Station B  
 Station C  
 
 Possible  
 Action  
 Possible  
 Action  
 Possible  
 Action  
Consultation Hold, Call Hold, Park, Common Hold  
Yes  
Deactivate Whisper/Off Hook Announcement  
Yes  
Deactivate Whisper/Off Hook Announcement  
No 1  
Negative acknowledgement  
Transfer  
--  
--  
--  
--  
--  
--  
Conference  
--  
--  
--  
--  
--  
--  
Call waiting  
Yes  
--  
Yes  
--  
Yes  
--  
Call waiting
(answer)  
Yes  
Deactivate Whisper/Off Hook Announcement  
Yes  
Deactivate Whisper/Off Hook Announcement  
Yes  
Negative acknowledgement  
Override  
No 2  
--  
No2  
--  
No2  
--  
DTMF
Transfer  
Yes  
--  
Yes  
--  
No  
--  
FEAT counter  
--  
--  
--  
--  
--  
--  
Associated services  
--  
--  
--  
--  
--  
--  
DISA/DISI  
--  
--  
--  
--  
--  
--  
1Consultation Hold should not be offered to station C in the menu. The keystroke that would normally initiate Consultation Hold is acknowledged with "not possible".
2Prevent as soon as PROGRESS message is initiated ("Override Possible" should no longer be sent)