Lantronix G520 G520 User Guide - Page 119

10: Services SMS Services > SMS The SMS feature lets you send SMS messages to the gateway to request diagnostics information, configure gateway settings, or initiate certain actions such as DOTA upgrade or starting and stopping the VPN. SMS Configuration Services > SMS > SMS Configuration You can configure up to four administrator mobile numbers to receive SMS messages containing gateway diagnostics information after a command is sent by SMS. The mobile number format is as follows: + You should include the preceding special character "plus (+)". Example: +9198xxxxxxxx Parameters SMS Configuration Enable AT Enable SMS Administrator Table 10-25 SMS Service Configuration Description Enable remote SMS configuration. Enable remote AT commands using SMS Displays up to four Administrators configured to receive the diagnostics via SMS after an SMS command is sent. Note: If no number is configured then the gateway will accept SMS from any number. For each administrator to be configured, enter the mobile number with country code. The format of mobile number must be: + with a preceding special character "plus (+)". Example: +9198xxxxxxxx SMS AT Commands Table 10-26 describes the SMS AT commands in alphabetical order. Name AT Command Table 10-26 SMS AT Command Syntax Command Syntax AT#ATCMD='', Description: The command passed in the AT command string will be sent directly to the internal GSM module. Parameters:  AT command string - AT command such as AT+CSQ (signal quality) or AT+CREG? (to check the registration status of GSM module).  Timeout - The timeout value should be an integer in seconds. If the timeout value is set to 0, don't wait for a response. Issue the command and leave it. Example: AT#ATCMD=AT+CSQ,5 - check signal strength G520 Series IoT Cellular Gateway User Guide 119