Panasonic KX-TG2219B 用户手册

The handset dialing buttons will light when you press a button or lift the
handset off the base unit. They flash when a call is received. 
The lights will go out a few seconds after pressing a button, lifting the
handset, answering a call, hanging up a call, leaving the programming
mode.

The lighted handset display will stay on for a few seconds after pressing a
handset button, lifting the handset off the base unit, hanging up a call, or
leaving the programming mode.

Voice Enhancer Technology (V.E.) helps clarify and improve sound
reception creating a natural-sounding voice that is easy to hear and
understand. 
This is accomplished by enhancing the frequency that is narrowed
through the telephone line and comes pre-set to ON at the factory.
Under normal conditions, cordless phones are limited to a narrowed
frequency bandwidth (300Hz to 3.5KHz). Panasonic’s new Voice
Enhancer Technology cordless phones are able to simulate a band signal
above and below the normal bandwidth limitations. As a result, a clearer,
crisp sound much closer to the actual voice is achieved. 

•“V.E.” is displayed in the talk, speakerphone mode or when the unit is not being

used.

Helpful hint: 
Depending on the condition and quality of
your telephone line, Voice Enhancer may
emphasize the noise already on the line. If it
becomes difficult to hear the caller, please
set the Voice Enhancer mode to OFF.
Each time you press 

(VOICEENHANCER),

the mode will turn ON or OFF.

V.E.

“V.E.” indicates the Voice
Enhancer mode is turned ON.