import javax.media.rtp.RTPManager; //导入依赖的package包/类
/**
 * Stops the transmission if already started.
 * Stops the receiver also.
 */
public void stop() {
    if (!started) return;
    synchronized (this) {
        try {
            started = false;
            if (processor != null) {
                processor.stop();
                processor = null;

                for (RTPManager rtpMgr : rtpMgrs) {
                    rtpMgr.removeReceiveStreamListener(audioReceiver);
                    rtpMgr.removeSessionListener(audioReceiver);
                    rtpMgr.removeTargets("Session ended.");
                    rtpMgr.dispose();
                }

                sendStreams.clear();

            }
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }
}
 

import javax.media.rtp.RTPManager; //导入依赖的package包/类
public void initRTP(int port) throws UnknownHostException, 
	IOException, InvalidSessionAddressException {
	rtpManager = RTPManager.newInstance();
	rtpManager.addReceiveStreamListener(this);
	rtpManager.initialize(new SessionAddress(InetAddress
			.getByName(sipHandler.getLocalHost()), port));		
}
 

import javax.media.rtp.RTPManager; //导入依赖的package包/类
public void addTarget( int localPort, RTPManager mgr, String ip, int port) {
try {
    SessionAddress addr= new SessionAddress( InetAddress.getByName( ip),
       					     new Integer( port).intValue());
    
    mgr.addTarget( addr);
    
    tx.addTargetToList( localPort + "", ip, port + "");
} catch( Exception e) {
    e.printStackTrace();
}
   }