Call XI from 3rd Party via HTTP

Hi,

i've got a question. At the moment I have a szenario

Sybase->XI->SAP R3 and it works like this. XI poll every

10 sec. to sybase and look over a subquery for specific datasets... no I like to make it like this:

On every commit in Sybase it sends a http request to XI (works already) but how to handle this call in XI (?possible?) and could I use the rest of my already existing process? Means the http request trigger the rest of my process?

Thanks for reading!

Matt