Hi rolfk, i am really sorry so that i forgot to point out whether i am using TCP or UDP.
of course here i am using TCP/IP only.. and now i am trying the example you said. thank you very much
Well.. i have tried the example you said. but it work only when TCP Communictor - Active is also excecuted. it do not accept data from my android phone, even i changed the port number. is there any modification needed?