SMS
When data connection is not available, SMS messages could be used as an alternative means of emergency.
The device can receive SMS sent from the cloud and in the same way reply.
It is not possible to send or receive SMS to/from other destinations and therefore not even to mobile phones.
Messages sent from the device can be viewed using SMS report.
SMS expiry & retry
The default expiry time is 24 hours.
If the device is not reachable at the point of time when the MT-SMS was submitted, the retry mechanism will deliver the message as soon as the device attaches to the network the next time and is ready to receive messages, provided the MT-SMS has not expired.
The period between the different delivery attempts increases with each attempt.