alt wrote: Sun Mar 18, 2018 8:25 pm Dear rsousa,

USSD over SMPP is vendor specific solution. I cannot provide you ready to use code.
You should request USSD service description from your provider then I can help you to implement it with Inetlab.SMPP library.

Thank you... I have sent you the SMPP documentation of the USSD gw.

Dear support,

We are evaluating your SMPP product and would like to request an example code (c# or vb.net) of receiving a USSD message through SMPP and reply with a message in the same session, like a menu:
"Main Menu
1-Hello
2-Bye"

thank you