I read somewhere that nokia handset support rtp streaming through the use of inputstream and not through locator. So thats mean that MMAPI Manager class does not work (tested and proven to be true), tried Connector from IO package and didn't work either(I assume that Manager couldn't work is because it uses Connector to find and deal with the protocol thus, if Manager can't work, Connector likely can't work too.) Now there is only 2 possible way i though of, create a custom protocol handler that can handle the protocol and retrieve the inputstream for Manager to handle or create a custom DataSource and SourceStream to handle RTP protocol. I think the first idea was pretty much possible than the second one as indicated by nokia, inputstream works. I know many people are having same problems as me. I search through the net for answer but to no avail as support is really limited and alot of trail and error is needed. I need help on this. Please help me. Any constructive comment is appericiated. If you are having the same problem, maybe we can work things out together.