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Multi-Link Iridium Satellite Data Communication System for Polar Research - page 9 / 29

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University of Kansas

9

4-Channel Iridium System -2003 Conclusions

Reliable console based management software

End-to-end network worked

4-channel throughput = 9.26 Kbps;  System efficiency > 90%.

Average time interval between call drops = 100 minutes

Average up-time ~ 90%

Average round trip time with Iridium-PSTN configuration ~ 2 seconds

Problems with USB-Serial converter in Linux

PPP level compression was resulting in corrupted modem termination – loss of packets

Primary modem failure resulted in the termination of all the other modems

Not fully autonomous

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