Unable to connect to SAP server from java using JCO

Hi All,

Can anyone help me to this issue, am unable to hit the SAP server from java code using JCO . This is the error am getting now

"RFC_ERROR_COMMUNICATION: Connect to SAP gateway failed

Connect_PM GWHOST=10.113.11.236, GWSERV=sapgw00, SYSNR=00"

Regds,

Phanikumar