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E-GSM(-P), EN-GSMA: The GSM modem is not sending SMS text messages.
Author: Administrator, Created on: Mar 18, 2010 5:20 PM

Issue: The GSM modem (E-GSM(-P) or E-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 E-SEMS-16 Web Interface, click "Administration", then click "Settings", and "Enterprise").
- GSM Modem Status Messages:
  - GSM Modem Not Present: No communication occurs between the E-SEMS-16 and the GSM Modem
    - Probable causes: Defective serial cable between units, or the E-SEMS-16 was not rebooted after connecting the GSM Modem.
    - Solution: Replace defective serial cable, and reboot the E-SEMS-16.
    (NOTE: Rebooting is only required for E-SEMS-16 units with firmware version 3.7 or earlier.)
  - GSM Modem Present: Communication occurs between the E-SEMS-16 and the E-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 E-SEMS-16 and the E-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.
After each change made in the Enterprise Settings Screen in the Web Interface, reboot the E-SEMS-16 to refresh the GSM Modem status reading. (Rebooting is only required for E-SEMS-16 units with firmware version 3.7 or earlier.)