References

Digi International. 2006. White Paper: How to Achieve Maximum Signal Strength with Digi Cellular Routers. Available: [online] http://www.digi.com/pdf/appnote_cellular_signal_strength.pdf

Digi International. 2008. Configuring and Testing Digi Cellular Devices - Rogers. Available: [online] http://ftp1.digi.com/support/documentation/ Config%20and%20Test%20Digi%20Cellular%20Device%20-%20Rogers.pdf

wpsantennas.com. 2008. Cellular Field Test Modes. Available: [online] http://www.wpsantennas.info/pdf/testmode/FieldTestModes.pdf