Looking for a pager module to interface to a microcontroller. End result is to be able to send commands to microcontroller by calling a pager phone number and entering codes.
If Motorola Advisor series pagers is still available, you can use one for such purpose. If programmed correctly, they dump all received messages to programming port once they receive it.
This worked well for me (POCSAG Advisors was used, never tried newer Flex ones)