CaptionCall 57Tx Setup Manual page 13

Set the Volume...
Step 1 — Adjust the handset volume
Press + for more volume or — for less
Step 2 — Look at the volume indicator
The bars will change from green to yellow to red
setup guide
Learn to Use the Handset Volume Controls
Step 1: Pick up the handset.
Step 2: Adjust the handset volume controls up or down.
As you adjust the volume, look at the bottom of the display screen.
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