a.If you are using the 3.5mm Audio/Neckloop Jack, and want to speak into the handset, lift the handset and speak into it. Adjust your volume. On completion of the call, carefully replace the handset in the cradle.
b.If you are using the 3.5mm Audio/Neckloop Jack, and want to speak into the speakerphone, press the “SPKR” speakerphone button for
c.If you are using the 2.5mm Headset Jack for 
headset button.
Figure #23 – Audio / Headset Jack Button
Receiving/Answering A Call:
1.Plug your accessory into the Audio/Neckloop Jack or Headset Jack.
2.If using the audio jack, press the “SPKR” or lift handset.
3.If using the headset jack, press the 
(headset) button while the phone is ringing to answer the call.
4.Depending on whether you are using the 3.5mm Audio/Neckloop Jack or 2.5mm Telephone Headset Jack follow the directions above (A, B or C)
Using the Amplification Function
The CSC50 Phone has an “AMPLI” button that controls the loudness and tone of the handset. Without pressing the “AMPLI” button, you are able to amplify the handset up to 30 dB of amplification. Once the “AMPLI” button is pressed, an extra level of amplification is added providing 30 to 50 dB of gain and tone control.
Voice Amplification and Tone
Your CSC50 Phone is equipped with a specialized amplification function designed to fit your needs. You can adjust the volume and tone (sound frequency range) of the incoming voice by simply adjusting Volume and Tone Controls. To use the specialized amplification boost and tone control features, follow these directions.
1.Once you have dialed the phone or answered a call, press the “AMPLI” (amplify) button (See figure #24). This turns the incoming voice amplifier ON. When the ampli- fier is ON, you will see the red light on the left side of the “AMPLI” button light up. i.e. “AMPLI”
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