Do you support any echoing support in the AT Interface app / implementation such as ATE1 & ATE0 for example?

Both ATE1 and ATE0 commands are pretty common in the modem world which would turn on and off the echo mode. In this case, any typed character(s) will be displayed to the screen or terminal – otherwise they are completely suppressed. This behaviour can be very useful for debugging or in some applications. However, there is currently no support for any echoing in our own AT Interface app and implementation. We recommend (if possible) to use a terminal application as an alternative such as UwTerminalX. In PuTTY, Tera Term or RealTerm this can be configured and enabled if needed.