public void start() {
		if (t==null) {
			t = new Thread(this);
			t.start();
		}
	}
RFC 3267.
  
  AMR Streaming over RTP.
  
  Must be fed with an InputStream containing raw AMR NB
  Stream must begin with a 6 bytes long header: "#!AMR\n", it will be skipped
src/net/majorkernelpanic/streaming/rtp/AMRNBPacketizer.java