This error indicated that the SIM card used is wrong.
If you are using BGAN SIM, you can relate it with the firmware version of the terminal.
BGAN SIM card is only compatible to the firmware version R01.1.0 onwards.
You can verify the firmware version by using the Safe Mode option.

This error indicates the user authentication is failed.
The APN username and/or password are incorrect. Please check the APN settings on the Data Profile through Web Console. You obtain the APN username and password from your service provider. Contact your service provider if you are unable to solve the problem.

In general, this error shows because the signal is weak for the activation of a PDP context or due to the network congestion. CME 539 can also denote that the Satellite connection was lost and a new connection needs to be established. It usually occurs when there is any partial blockage of the signal.

You are recommended to check whether there is blockage and shift the unit to a better line of sight location.

This option is only available in “Safe Mode”. Switch the terminal to Safe Mode.

Navigate to Settings > Calibration to perform magnetometer calibration to your iSavi™.

The input DC voltage of iSavi™ can be between 15VDC and 20VDC.
Depending on the input voltage you supply multiplied by the supplied current needs to be equal to or greater than 20 watts to run the iSavi™ unit and 50 watts to run the iSavi™ unit and also charge the battery.
Addvalue recommends that for a full load (transmitting at full capacity and charging the battery at the same time) the charger or panel should be capable of providing 65 watts
Note: Battery pack draws up 1.5A from 18V source when charging.

iSavi™ terminal can be charged with a Solar Panel delivers around 30 watts at 18 VDC, which means that the battery will take a bit longer to charge. The charging speed will be faster if you charge the battery alone without attaching to the transceiver.

iSavi™ is having the ingress protection rating of IP65, which means it is protected from dust ingress and low pressure water jets from any direction. However, under charging condition, you need to protect the terminal from the rain or water contact.

DTMF is sent when you press a number key with an auto attendant (such as “press 1 for customer service”). By default, the voice app is configured under Inband DTMF. SIP INFO has lesser packet lost and you are recommended to Send DTMF using SIP INFO.

Control app and LED Visual Pointing Mode methods always point you to the recommended satellite.
You can manually point to the satellite that you want based on the reference Elevation and Azimuth angle displayed at the home page of the Web Console.