Hi Vishnu -
I didn't try but i think you can just create an ICO and use the below URL to send a message.
While creating ICo you can give any name for message interface.
http://<HOST>:<PORT>/XISOAPAdapter/MessageServlet?channel=<Party>:<Service Name>:<Channel Name>
Sample java code to send a soap message.
Sending a SOAP request to a Web Service via URLConnection &laquo; The Holy Java