I need to communicate with one dc to other but i dont want to use used dcs concept .
For one DC to other DC
1.You can use Used DCs
Source : http://help.sap.com/search/highlightContent.jsp
Target : http://help.sap.com/saphelp_nw04/helpdata/en/38/37d93f130f9115e10000000a155106/content.htm
Go through this links you will find solution.Let me know if you face any issue