It's worth looking at the $40 Adafruit FONA cellular modem with inexpensive Ting month-to-month cellular service. We've been using it and it's great! I'm happy to share my simple Raspberry Pi serial port glue code that connects to Intermapper's paging interface via a local web service.
Add a GPS board and you can make it double as a GPS-based time server, since FONA will extract time and latlong from GPS and make it accessible via the serial port. -mel beckman -mel beckman > On Aug 16, 2016, at 5:10 PM, Seth Mattinen <se...@rollernet.us> wrote: > >> On 8/16/16 16:33, Sam Norris wrote: >> We are a Verizon subscriber so I am paying, it is not a free >> service. > > > Verizon does have an enterprise messaging service with API hooks, such as > using SNPP instead of email-to-sms. > > ~Seth
