It is not possible to send a SMS after GSM modem restart or power interruption happened.

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• Retry sending message via GSM SMS or SMTP mail have not correct try count and last send try timestamp.

  Summary When sending a message via the GSM SMS dispatcher or the SMTP mail dispatcher fails due a hardware failure (no modem connected, no network connection, wrong phone number or email), the last send try timestamp and the send try count are not ...

• Sending many GSM SMS messages caused high CPU load of the zenon runtime and could cause the zenon runtime to stop responding

  Summary When many GSM SMS messages are sent from the zenon runtime simultaneously, the runtime causes a high CPU load and may stop responding. DescriptionWhen many GSM SMS messages are sent from the zenon runtime simultaneously, the runtime causes a ...

• Message Control does not communicate with certain GSM modem

  Summary To check the availability of the modem, Message Control sends the "AT+ CPIN" command to check if the modem is ready for sending. Several GSM modems have a different answer to the "AT+ CPIN" command to which the Message Control did not react ...

• The connect to modem validation mechanism of zenon sets wrong SMSC number in the SIM card settings and sending of SMS is not possible over that SIM card.

  Summary If the field:"Number of SMS center" is empty, the connect to modem validation mechanism of zenon sets a wrong number in the SIM card settings and sending of SMS is not possible over that SIM Card. DescriptionIf the field:"Number of SMS ...

• Received SMS messages are not deleted by Message Control because the modem does not respond to the AT+CMGD command

  Summary SMS messages are not deleted properly by Message Control because the runtime uses the AT+CMGD=[SMS Index],[Flag] syntax to delete SMS messages. Instead, the GSM modem expects an AT command with the following syntax: AT+CMGD=[SMS Index] ...