connection to partner 'Gateway Host' broken

i am getting this error after deploying both ESS and MSS business packages

com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: CPIC-CALL: CMRCV ERROR connection to partner 'sys23:sapgw00' broken TIME Tue Mar 13 22:57:11 2007 RELEASE 700 COMPONENT NI (network interface) VERSION 38 RC -6 MODULE nixxi.cpp LINE 3797 DETAIL NiIWrite SYSTEM CALL WSASend ERRNO 10054 ERRNO TEXT WSAECONNRESET: Connection reset by peer COUNTER 3

plz help me

thanks in advance