Solidyne HL 202, Руководство пользователя

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The function answer & ends a calling from BUETH button may not be abble
with some cell phones.
Many phones implement "call back" from the Bluetooth device. In that case,
pressing BLUET in the hybrid phone will contact the last number dialed.
Check the phone manual.
3.2.3 End a call
You can ends the calling by pressing BLUET in the hybrid; or from
the cell phone. Before you must quit the call from the air because
when Bluetooth ends the calling, generates a "beep". If the hybrid is
on the air, this “beep” is heard on the air.
3.2.4 Power off Bluetooth
Press and hold the BLUETH button until the LED flashing in red and
stay off.
3.3 VOICE QUALITY RESTORATION (VQR)
(only models HL203-VQ)
Solidyne VQR (Voice Quality Restoration) is a type of audio
processing that allows improving the audio quality of a telephone
communication. This technique bases on the reconstruction of the
spectrum lost due the transmission.
As you know, the bandwidth transmitted through a telephone line
reduces approximately to 300 Hz – 3.000 Hz, because this is the
range of the human voice. Therefore, the components of low and
high frequency, presents in the original signal, are lost in the
transmission. These components, although are not important for the
understanding of the words, ARE VERY IMPORTANT FOR THE
AUDIO QUALITY, because they give “weightiness” and “presence”
to the voice. System VQR really reconstructs the bass of the voice,
reaching the frequencies of up to 50 Hertz, being able also
reconstructing component of high frequency to recreate the highs
that are of extreme importance to obtain the presence sensation.
In addition, stage VQR has a third control to improve to the dynamic
range, obtaining values of up to 70 dBA in a telephone transmission.
This processing is applicable as much to calls by terrestrial lines,
like a calls made through the mobile telephony. Although the
reconstruction reaches to callings made using the internal
Page 26 Telephonic Hybrids SOLIDYNE