Hi,

I got no replay for that. I have even put that question in rtpproxy form but no response.

I have appended the header (PCMA or PCMU) to that file using a java program and tried to play that file . It is playing but the audio quality is very bad.

Java code that I wrote to apped header

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import java.io.ByteArrayInputStream; import java.io.File; import java.io.FileInputStream; import javax.sound.sampled.AudioFormat; import javax.sound.sampled.AudioInputStream; import javax.sound.sampled.AudioSystem; import javax.sound.sampled.AudioFileFormat.Type;

/** * * @author chaitanya */ public class AudioFileWriter { public static void main(String args[]) {

File file1 = new File("/home/chaitanya/Desktop/a.rtp"); //RTP file recorded by rtp proxy File file = new File("/home/chaitanya/Desktop/a.wav");//Out put wave file AudioFormat af=new AudioFormat(new AudioFormat.Encoding("ULAW"),8000,8,1,4,8000,false); // ULAW or ALAW what ever u r using and there respective bit rates

int length; try{ AudioInputStream ais=new AudioInputStream(new FileInputStream(file1),af,AudioSystem.NOT_SPECIFIED);

//ByteArrayInputStream bais=new ByteArrayInputStream(b,0,b.length); Type afft=new Type("WAVE","WAV");

AudioSystem.write(ais,afft,file); } catch(Exception e){ e.printStackTrace(); }

}

} ---------------------------------------------------------------------------------------------------

You can try this.

If you find any other solution please let me know.

regards, Chaitu