SMS send rc11

Can i use Siemenes MC35i GPRS modem or MC39i with this tool? What is “sms send” communication protocol? AT Commands? thanks
http://www.garset.cz/images/plast_modem.jpg

This tool is created for X86 platform or both.. pc and RouterBoard (532..etc)

I’ve tried with a Siemens C55 phone and haven’t succeeded on a rb532.
I’m able to send SMS using this phone and standard AT commands (using PDU SMS format).

So or the option isn’t working correctly, or there’s “something” untold behind it. It also has strange behaviour when using “TAB” to complete syntax.