Operations; Boost Function/Amplifying Incoming Sounds; Figure - Clarity Alto PLUS User Manual

Your unit is designed to adhere to the new TIA-4953 standard, which defines the specific
audio performance that compensates for audio loss, across mild to severe categories . Your
AltoPlus has superior audio performance and ringer loudness, to ensure that you never miss
a call or a spoken word again .
Boost function – Amplifying incoming sounds
1. While on a call, press the BOOST button to engage the amplifier . The AltoPlus has
a BOOST button and a VOLUME control wheel that control the loudness of the re-
ceiver . (See Figure 6). Once the BOOST button is pressed or the VOLUME control
wheel is rolled up past level 9), an extra level of amplification is added over the entire
range of the Volume Control . During a call, the BOOST button can toggle the Clarity
Power amplifier function on or off according to your needs . The BOOST button will re-
set automatically every time the phone is hung up . The BOOST light will illuminate (red)
while the Boost function is activated .
WARNING: LOUD VOLUME. To protect hearing, lower
the volume before engaging the Boost function.
2. Adjust the VOLUME wheel to achieve the desired sound level (to 50dB of amplifica-
tion) . The VOLUME control wheel adjusts the level of volume in the handset both in
Boost Off and Boost On modes . Once the BOOST mode, the AltoPlus provides up to
50dB of gain . (See Figure 7)
3. Press the TONE button to customize your hearing experience . Since we all have differ-
ent hearing preferences, we suggest exploring each setting to find the one most comfort-
able for you . These five preset settings, along with the custom setting and the volume
amplification, are part of the Digital Clarity Power (DCP™) technology . (See Figure 8)

Figure 6

OPERATIONS

Figure 7 Figure 8
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