I have a failover setup for my main internet provider using an LTE modem. I've also found it very useful to have a mobile number available for sending SMS alerts when server errors occur, such as:
- no internet connection — sending status updates about the failover
- sending messages about modem restarts
- and so on...
Usage:
sms <option> [arg] [argX]...
send [number] [text] - send message
ls - show messages
read [number] - read sms num X
del [number X] - delete sms X, if not given ALL!
all - show ALL smseses