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1. Ensure the SST software has been stopped.
2. Lift the receiver and listen for a dial tone.
3. Dial the country code, area code and phone number of a phone that can be used for voice quality testing.
Don't forget to press the # key to initiate the call.
4. When the call is answered verify there is intelligible voice in both directions.
5. If any issues are detected hang-up and attempt the call again. If the problem persists attempt a call to an
alternate test number preferably in a different exchange (different provider) from the initial attempt.
6. If after all of these attempts there is still an issue consider the following
a. Clear voice from the Iridium Pilot Land Station unit to the landline and garbled voice in the other
direction is typical of local interference disturbing the down-link signal.
b. If the clear voice is from the land-line side and the Iridium Pilot Land Station side is garbled then there is
likely another issue and you should consult the trouble shooting section.
c. If the call is not clear in either direction then there could be an interference issue. An alternate location
should be considered.
d. If the call fails to connect go to the trouble shooting section of this guide.
Note: Voice quality of the Iridium Pilot Land Station network is characterized as narrow band telephony.
Significant voice compression is used in transporting voice and it can therefore sound slightly degraded from a
typical mobile telephone call.
Testing the Data Service
With the PC connected to the "Data" port on the IDU open a browser on the Windows computer and
attempt to connect to http://speedtest.iridium.com. Once the site is visible click the "start" button. This
is a customized speed test that accurately measures the performance of satellite communications. Satellite
communication differs from terrestrial communications. In transitioning from stand-by to full load about
20 seconds are required to acquire the network resources. The speedtest tool has been specifically designed
to account for these characteristics.
Note the speed should typically be within 20% of the provisioned rate. While checking a 128kbps link note that
local activity may have the effect of slowing the link. Seldom are the lower provisioned rates affected by traffic.
If a rate is out of specification wait 5 minutes and try again.
Now that the site survey, voice call, and data call have provided nominal performance you can initiate routine
use of the terminal.
Iridium Pilot Land Station Installation Guide
23
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