Hi I'm tring to use jSS7 to build MAP interface to send message like this one : https://code.google.com/p/jss7/source/browse/map/load/src/main/java/org/mobicents/protocols/ss7/map/load/Server.java but I don't found any document or any demo to know how to change from USSD to SMS
Unfortunately there is no clear manul of how to implement different MAP messages because of there big count. Use MAP protocol specification (3GPP TS 29.002) to learn more.
You can check also opensource mobicent SMSC GW source code: https://code.google.com/p/smscgateway/