VoIP Phone Call from mobile to PC - Streaming the audio and playing it back

Question

In short:
How can I stream the audio captured from a mobile to PC and play it back.
In brief:
I am trying to develope an application to chat(voice) between a J2ME program and a Java program which is running in a PC.
Currently I am able to send and receive the text message by using SIP protocol after establishing session by using SIP protocol.
As a next step, I want to capture the audio and play back in PC and Mobile.
Now, I am able to capture audio from the microphone of the mobile.
Player p =Manager.createPlayer("capture://audio?rate=8000&bits=8&Channels=1");
                p.realize();
                // get the RecordControl over this Player
                RecordControl rc = (RecordControl)p.getControl("RecordControl");
                // create an OutputStream which the RecordControl will use
                // to write write the recorded data.
                ByteArrayOutputStream output = new ByteArrayOutputStream();
                rc.setRecordStream(output);
                // start the recording
                rc.startRecord();
                p.start();How can I stream it to PC and play it back? Also, I need to send audio captured from PC to mobile and have to play it back.
Pl. do reply.

Answer 1

now I am able to play the stream (with some delay),
while(inputStream.read(buf)!=-1) {
                    try {
                        ByteArrayInputStream recordedInputStream = new ByteArrayInputStream(buf);
                        play2 = Manager.createPlayer(recordedInputStream, "audio/x-wav");
                        System.out.println("Playback player created...");
                        play2.prefetch();
                        System.out.println("Playback player prefetched...");
                        play2.realize();
                        System.out.println("Playback player realized...");
                        play2.start();
                        System.out.println("Playback player started...");
                    } catch (MediaException ex) {
                        ex.printStackTrace();
                    } catch(Exception e) {
                        e.printStackTrace();
                    }But, the problem is , I have to play the audio, as well as capture the audio to create the duplex communication.
Is it possible to do the audio capture and playback simultaneously? If it is not possible, pl suggest an idea to achieve this.
null