protected SipStackImpl(){
  super();
  NistSipMessageFactoryImpl msgFactory=new NistSipMessageFactoryImpl(this);
  super.setMessageFactory(msgFactory);
  this.eventScanner=new EventScanner(this);
  this.listeningPoints=new Hashtable<String,ListeningPointImpl>();
  this.sipProviders=Collections.synchronizedList(new LinkedList<SipProviderImpl>());
}

protected SipStackImpl ( ) { super ( ) ; NistSipMessageFactoryImpl msgFactory = new NistSipMessageFactoryImpl ( this ) ; super . setMessageFactory ( msgFactory ) ; this . eventScanner = new EventScanner ( this ) ; this . listeningPoints = new Hashtable < String , ListeningPointImpl > ( ) ; this . sipProviders = Collections . synchronizedList ( new LinkedList < SipProviderImpl > ( ) ) ; }
creates a new instance of sipstackimpl .
