CapTel 840i: Adjusting the Volume
You can increase the volume of the person’s voice coming through the handset, up to a 40 dB gain from min/max on all calls. Watch the lights above the VOLUME bar to see what level the volume is set to.
To increase the volume (make sounds louder) during a call, press the right side of the VOLUME bar.
To decrease the volume (make sounds softer) during a call, press the left side of the VOLUME bar.
To save your volume setting so that it will be used during every call, see Saving the Volume on page 92.
WARNING: The maximum volume setting is very loud. People who do not need amplification should not use the phone at its highest volume setting. The volume level automatically returns to a mid-range setting whenever the phone is hung up.