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To configure the modem, use the modem settings tab (Main Menu→SMS messages):
Fields characterizing the properties of the modem element in a system:
Status – the state of the cellular network;
- Operator – the state of the cellular network;
- Signal level – the signal level;
PIN code – pin-code of sim-card;
- Choose an operator – actual list of operators present on the GSM network and the button for refresh this list;
SMS center number – SMS service center number, leave it blank to auto-detect;
Warning We highly recommend writing the SMS center number in this field manually. Some SIM cards have problems with auto-detect features.
- Request current balance – the number on which the account balance is requested, to see the answer, click on the "OK" button and wait for an answer, which will be shown in the log;
Info USSD is not supported in LTE mode. The USSD query has a specific format, usually starts with an asterisk, for example: *111# or *222*
Do not enter the phone number in this field.
Some operators abandoned the use of USSD and do not support it. - Clear SMS list – clear list of SMS messages.
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| Warning |
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If an error occurs during the operation of the modem, or the SIM card is not installed, or the PIN code is not correct, the message written into the log queue ("GSM modem: Error, check your SIM card and PIN code" or "GSM modem: modem error, restart smsd"). The message is displayed only 5 times in order not to overflow the log. |
GSM operators list
The list of operators is updated once a few minutes after the system is turned on. Next time the list can be updated by the button. Getting the list is a long procedure and can take several minutes. When successfully receiving the list the corresponding message is displayed in the log.
If it is not possible to setup the connection with the network of the selected operator, then the modem switches to the automatic selection mode.
The name of the operator on the network of which works the modem is showing in the Operator field.
GSM modem elements
The “System Tree” menu has elements corresponding to the status of the modem. These elements do not affect the state of the element "System". Elements can be used in logical schemes.
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