We might face a case of porting Java VM for the device, which is connected to Internet over a cellular modem. And i found two different ways in principle for the MCU-to-modem interface, 1) AT Commands ONLY mode and 2) PPP mode, in the URL below.
i can imagine mostly the PPP mode could be the case you are to port your Java VM, however my questions here are as:
a) Have you ever experienced the JVM porting work ONLY with AT Commands for the cellular modem interface?
b) If you answered yes above, how much would be the impact to the development lead time - compared to the PPP mode?
Thanks much in advance for your feedback.