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SMS commands

Authorization

Each SMS command must be prepended with username and password, eg.:

user secret APN internet

Info

  • User names and password are NOT case sensitive.
  • Username max length: 16
  • Password max length: 16

Responses

For most of the commands response format is: 

Q1234567890123456 COMMAND RETVAL

Q1234567890123456 - device UID
COMMAND - issued command
RETVAL - OK / ERROR / value(s) returned by the issued COMMAND

If the command is not recognized, the device doesn't send the response.

ERROR is returned when:

  • arguments provided for the given command are not correct
  • execution of the action specified in the command has failed
  • command is recognized, but not supported in the RECOVERY mode if it is active

For those commands which return multiple values the RETVAL format is:

KEY1:VALUE1 KEY2:VALUE2 ...

Commands

SETAUTH

Arguments:

  • 0 - reset to default
  • 1 - NUMBERS / LOW (disable/enable numbers whitelist authorization)
  • 2 - set username and password
-> SETAUTH
<- Q1234567890123456 SETAUTH OK
-> SETAUTH NUMBERS
<- Q1234567890123456 SETAUTH OK
-> SETAUTH username password
<- Q1234567890123456 SETAUTH OK

REBOOT

Restart the device.

Note

The device does not respond to this command.

APN

Change APN configuration.

Parameters:

  • name - APN name parameter, must be obtained from mobile carrier
  • username - optional
  • password - optional

Examples:

  • APN internet - set APN name to internet
  • APN m2msims m2msims m2msims - set APN name, username and password to m2msims

Invalid examples:

  • APN - at least name parameter must be provided
  • APN internet orange - both username and password must be provided

Effects:

  • APN configuration is changed permanently.
-> APN internet
<- Q1234567890123456 APN OK
-> APN internet orange
<- Q1234567890123456 APN ERROR

RTC

Respond with Real-Time Clock date and time.

-> RTC
<- Q1234567890123456 RTC 2025-05-27 18:20:00