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Troubleshooting
This chapter provides information to help you troubleshoot problems you may encounter while
running the RST820.
Q
No lights on RST820
A
Check that DC power cable is correctly attached and the external supply is
adequately specified.
Q
No dial tone
A
Check if a data call is in progress and power is connected and equipment is in a
normal state
Q
Cannot make call, two tone signal heard
A
Phone requires a PIN or PUK, refer to the handbook
You can't make calls.
Q
A
Check that the antenna is properly mounted.
Do you have a clear view of the sky?
Did you enter the number in international format?
All calls made from the Iridium System require a special calling sequence;
please refer to your Service Provider for these details.
Check the signal strength meter. If the signal is weak, move the antenna to a
more open area.
Check the Network Selection settings.
Check your Operator coverage map.
Is R e s t r i c t e d displayed? Check the Call Barring setting.
Has a new SIM card been inserted?
You can't receive calls
Q
A
Check to see that your phone is powered on.
Check the antenna. Is it properly mounted?
Do you have a clear view of the sky?
Check the signal strength. If the signal is weak, move the vehicle to a more
open area.
Check the Call Forwarding and Call Barring settings.
You can't make international calls.
Q
A
Have you included the relevant codes? Press and hold the (+) key to display the
international dialling prefix (+), and then enter the appropriate country code,
followed by the phone number.
Q
Your PIN is blocked
A
Enter the PIN unblocking key (PUK1) or contact your service provider
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