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[174] ENVIROMUX-GSM(-P), ENVIROMUX-GSMA: The GSM modem is not sending SMS text messages.    « Back to Category
Author: Administrator, Created on: Mar 18, 2010 5:20 PM
Keywords: ENVIROMUX-GSM, ENVIROMUX-GSM-P, ENVIROMUX-GSMA, GSM modem
Language: English


Issue: The GSM modem (ENVIROMUX-GSM(-P) or ENVIROMUX-GSMA) is not sending SMS text messages.

Solution:
  • Check that the default baud rate for the Aux port is set to 115200.
  • Check the GSM Modem status message on the Enterprise Settings Screen (in the ENVIROMUX-SEMS-16 Web Interface, click "Administration", then click "Settings", and "Enterprise").

    • GSM Modem Status Messages:

      • GSM Modem Not Present: No communication occurs between the ENVIROMUX-SEMS-16 and the GSM Modem
        • Probable causes: Defective serial cable between units, or the ENVIROMUX-SEMS-16 was not rebooted after connecting the GSM Modem.
        • Solution: Replace defective serial cable, and reboot the ENVIROMUX-SEMS-16.
        (NOTE: Rebooting is only required for ENVIROMUX-SEMS-16 units with firmware version 3.7 or earlier.)

      • GSM Modem Present: Communication occurs between the ENVIROMUX-SEMS-16 and the ENVIROMUX-GSM, but no messages are being sent.
        • Probable causes: The SIM card is not configured properly, is not installed, or the antenna is unable to locate a wireless signal.
        • Solution: Check the SIM card configuration, installation, signal strength, and verify the "GSM Phone #" field is correct in the Enterprise Settings Screen.

      • GSM Modem Ready: Communication between the ENVIROMUX-SEMS-16 and the ENVIROMUX-GSM occurs, messages are being sent.
        • Probable Causes: GSM Modem is configured properly.
        • Solution: Check signal strength if GSM Modem suddenly does not send messages.
          • The Enterprise Settings Screen will display the signal strength in a range of -111DB (very poor) to -51DB (very good). Move the antenna to find the best signal strength to resolve the problem.

  • After each change made in the Enterprise Settings Screen in the Web Interface, reboot the ENVIROMUX-SEMS-16 to refresh the GSM Modem status reading. (Rebooting is only required for ENVIROMUX-SEMS-16 units with firmware version 3.7 or earlier.)


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