Hello, I’m running a HL7588 with firmware
I’m running on an AT&T SIM card and have successfully established a data connection using an external pppd.
However, I seem to be unable to send or receive any short messages. The CMGS commands are replied with OK, but nothing ever is received at the destination, and messages to the device seem not to be received, either.
Does this mean that AT&T does not provide short message services to me, and I have to check my subscription details?
Is IMS registration mandatory to send and receive short messages?
Can I/do I have take additional steps to achieve IMS registration?
Can I/do I have to manually select CGCLASS to be able to do data and short messaging simulteanously?
Grateful for any tips