I am currently involved in a project that aims to achieve the following.
Automated divert changes according to a schedule
(i.e Joe Bloggs is now on call, so divert calls to Joe Bloggs - and let Joe know via an SMS)
Send SMS to whoever is currenlty on-call to advise of any detected system outage
Ability to receive an SMS - that will trigger manual divert changes, or to trigger other things in Node RED etc etc
Most of this I know how todo with Serial AT Commands.
What I would like is some input into any device that some folk might recommended?
Here is some info that I am working with.
UK EE Network (1800MHz, 2100MHz, 800MHz) <- I believe
2G is due to end in the UK around 2033 - so no immediate danger of losing SMS functions, for devices that don't have 4G/LTE support - BUT, it will still be nice (as long as its supports the Serial AT command set)
The number is widley known in our business - and its sim is currently placed in a smart phone - where we manage diverts manually - but obviously it cant test our systems (Node RED will do that) - hence the need for Serial AT to drive comms.
I can use a serial USB adapter if needs be, but still needs to be a wired device, and not a hat of some kind
Go! (and thanks)