Using Asynchronous Request-Response

I want to make a web service and send message asynchronously,but i am not clear how the flow will be going.

i have seen this thing on http://edocs.bea.com/wls/docs92/webserv/advanced.html#wp226917

but, here it is using a web service StockQuoteService which is not defined on this site,so i am not getting the actual flow.

please help me

[361 byte] By [chatservera] at [2007-10-3 4:32:09]