Telenav for Nextel Supported Devices: v4.1 for BlackBerry 7100i - Manual (Page 34)

© TELENAV 2003-5 PAGE 34 OF 35
9. FAQ’s
How do I increase or decrease the voice prompt volume and control the backlighting?
The backlight and speaker volume levels can be controlled from within TeleNav’s Preferences. If the speaker
volume is set to at least mid-range and you are still not receiving audio prompts verify that your handheld profile is
not set to vibrate or quiet. To change your profile settings, highlight the Profiles icon that looks like a loudspeaker
and press the Enter key.
Why do I need the Nextel packet data service?
The Data Access (Total Connect), or BlackBerry Email and Web plans allow you to access nationwide routes,
maps, and Finder content from the TeleNav servers using the data communication features of your handheld.
These services are different from your cellular airtime.
How long after I apply for the Nextel packet data service until I can use my TeleNav system?
Generally, it takes until the following business morning before Data Access (Total Connect) is fully provisioned. If
you already have Total Connect or a BlackBerry Email and Web Plan, it should be no more than 4 hours before
an added TeleNav plan is active.
Does TeleNav use up my voice plan minutes?
TeleNav uses packet data to provide the navigation function. Using packet data does not use any of your voice
minutes. However, calling the Voice Address Input System does use about 75 seconds per address entered, and
this includes the Voice Call feature internal to the TeleNav application. If you use the feature that allows you to call
a business from within the Biz Finder, the duration of the call depends upon you.
How accurate is the GPS?
GPS accuracy can range from 20m to 100m, however most of the time the GPS is accurate to less than 50 meters.
What is ideal GPS environment?
The GPS requires an open, clear view of the sky. Buildings, covered parking areas, tunnels and dense foliage can
cause the GPS receiver to be unable to locate itself or have an extended initialization time (time to first fix).
If you are parked in a covered parking lot or near a tall building, it is recommended that you move into an open area
and then begin to use the TeleNav service.
How do I know that the GPS has a signal?
The TeleNav application on your handheld will alert you if the GPS does not have a valid signal. If this happens,
move to an area where there is a clear view of the sky so the receiver can hear the GPS signals from space. You
can invoke the native BlackBerry GPS application by selecting Options from the main menu, and selecting Location
Based Services. Then select “Refresh GPS”. If the screen shows “Scanning for satellites” for more than 60
seconds, you are probably in a poor GPS reception area.
Why does the GPS not work near buildings and other tall objects?
The GPS uses satellite signals from space to find out where it is. Therefore it needs a clear view of the sky. Tall
buildings and other objects that block the receiver’s view to the sky make it infeasible to determine your location.