Voice Communication
You can use the Dolphin terminal as a phone over the GSM radio.
Audio Modes
The back panel of the Dolphin 9900 contains both a speaker and a microphone that you can use to send
and receive audio signals over the GSM network; see
There are two audio modes:
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 as a speakerphone. To switch the back panel to
speakerphone, in the Dialler, tap Settings > Speakerphone. The audio levels adjust appropriately
for speakerphone use.
Volume Control
Use the Dolphin keyboard to manually adjust the volume.
VOL
To raise the volume, press the Blue modifier key + up arrow.
PG
To lower the volume, press the Blue modifier key + down arrow.
Accessing the Dialer Window
When the GSM radio is active, tap Start > Settings > Connections tab > Dolphin Wireless Manager,
then tap Menu > Phone Settings. The Phone dialer opens.
Displays the network
carrier from the SIM card.
Displays the most
recent calls.
Dialing
Once the dialer window is open you can dial out two ways:
• Tap the buttons on the dialer window.
• Use the physical keyboard (when it's in numeric mode).
Dolphin® 9900 Mobile Computer User's
Guide
Back Panel Features
Rev C
10/30/08
on page
3-6.
8 - 5