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Answers an incoming call 
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Enters the redial calls list 
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Places a call in receiver or headset mode 
Provides digits, letters, and special characters. 
Transfers a call to another party. 
Toggles mute feature on or off. 
Outputs audio in handsfree mode. 
Connects a standard 3.5 mm headset. 
 
W78HV power LED indicator 
 
Fast flashing red (300ms) 
The handset receives a voice mail or has a missed call. 
The handset is powered off.  
The handset is idle. 
The handset is fully charged. 
 
Menu on the W78HV 
The handset provides a variety of features that are grouped into the menu. 
 
Main menu 
The main menu is the top menu, which consists of seven menu items: Status, Intercom, Voice Mail, Call Features, Directory, Settings, and History.