Take a look at https://learn.adafruit.com/network-interface-failover-using-fona
If you want to see what Alan is talking about. I’ve not used the Adafruit card, yet. But it’s on my hacking list of to-do. johno > On Sep 14, 2015, at 11:08 AM, [email protected] wrote: > > Hi, > >> Today we use a product from MultiTech Systems call MultiModem iSMS to send >> SMS text messages from our monitoring system to our on call staff. This is >> a 2G product and we need to replace it soon. I know there are more generic >> cellular modems that can do texting if you are willing to put in the effort, >> the product we use currently though has a simple HTTP based API specifically >> to send SMS. Is anybody out there using something similar that can work on >> 3G or 4G networks? > > we have a Linux box with a 3G device attached via serial port. some > local scripts and a lookup table - sends SMS alerts for monitoring to > the required people. very basic, very simple. RaspberryPI territory. > > alan
