TCP/IP Connection from ABAP

Hello everybody.
Does anybody know the way how to create TCP/IP connection from ABAP? I need to establish TCP/IP connection from Appication server to external server(not sap) to retrieve some data. I assume that it can be done using RFC calling technique, but i think that i have to register needed functionality as RFC in external server. To skip this step i need an explicit TCP/IP from abap.
Thank you for helping.
Yours sincerely,
Nguyen Hai Long.
Edited by: Long Nguyen on Jun 24, 2008 10:06 AM

Thank you all. I found an example in the internet http://documentation.softwareag.com/Crossvision/sap231/pages/drfc2rpc.htm. The situation force me to overpass my laziness and to use RFC
Yours sincerely,
Nguyen Hai Long

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