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Dolphin® 9500 Series User’s Guide 9 - 11
Audio Modes
The back panel of the Dolphin 9500 contains both a speaker and a microphone that you can use to send and receive audio
signals over the GSM network. For details about the microphone and speaker on the back panel of the Dolphin 9500, see Back
Panel Features on page 3-4.
There are three audio modes: Handset, Headset, and Hands-free (speakerphone).
Handset
Handset mode is when you use the use the back panel of the terminal just as you would a cell phone, holding the speaker to your
ear to receive audio information and the your mouth over the microphone to send audio information.
This is the default audio mode.
Headset
Headset mode is when you plug a headset into the audio jack and speak into the microphone. You must use a 2.5mm plug; no
other audio plug will fit.
Hands-Free
Hands-free mode is when you use the back panel of the Dolphin 9500 as a speakerphone.
To switch the back panel to speakerphone, in the Dialler, tap Settings > Speakerphone. The audio levels adjust appropriately
for speakerphone use. For more information, see Settings Menu on page 9-10.