* Process the OK received response for a BYE
	 * @param clientTransaction - the client transaction associated with the response
	 * @param byeOK - the OK received response for a BYE
	 */
	public void processByeOK(
		ClientTransaction clientTransaction,
		Response byeOK) {
		CallManager callManager =
			messageListener.sipMeetingManager.getCallManager();
		//Find the Audio call
		Call call =
			callManager.findCall(clientTransaction.getDialog().getDialogId());
		if (call instanceof AudioCall) {
			AudioCall audioCall = (AudioCall) call;
			audioCall.setStatus(AudioCall.NOT_IN_A_CALL);
			messageListener.sipMeetingManager.notifyObserversNewCallStatus(
				audioCall);
			/*if(audioCall.getVoiceMessaging()){
				stopVoiceMessagingSchedule();		
			}					
			else{
				audioCall.getMediaManager().stopMediaSession();
			}*/
			System.out.println(
				"Audio Call removed : " + call.getDialog().getDialogId());
			//Remove the call
			callManager.removeAudioCall(audioCall);
		} else {
			IMCall imCall = (IMCall) call;
			//Remove the call
			System.out.println(
				"IM Call removed : " + call.getDialog().getDialogId());
			callManager.removeIMCall(imCall);
		}
	}

	/**
	 * Process the OK received response for a CANCEL
	 * @param clientTransaction - the client transaction associated with the response
	 * @param cancelOK - the OK received response for a CANCEL
	 */
	public void processCancelOK(
		ClientTransaction clientTransaction,
		Response cancelOK) {
		CallManager callManager =
			messageListener.sipMeetingManager.getCallManager();
		//Strip out the callee
		SipURI calleeURI =
			(SipURI) ((ToHeader) cancelOK.getHeader(ToHeader.NAME))
				.getAddress()
				.getURI();
		String callee =
			"sip:"
				+ calleeURI.getUser()
				+ "@"
				+ calleeURI.getHost().trim().toLowerCase();
		//Find the Audio call
		AudioCall call = callManager.findAudioCall(callee);
		call.setStatus(AudioCall.NOT_IN_A_CALL);
		messageListener.sipMeetingManager.notifyObserversNewCallStatus(call);
		callManager.removeAudioCall(call);
	}

	/**
	 * Process the OK received response for a MESSAGE
	 * @param clientTransaction - the client transaction associated with the response
	 * @param cancelOK - the OK received response for a MESSAGE
	 */
	public void processMessageOK(
		ClientTransaction clientTransaction,
		Response messageOK) {

	}

	/**
	 * Process the OK received response for a SUBSCRIBE
	 * @param clientTransaction - the client transaction associated with the response
	 * @param cancelOK - the OK received response for a MESSAGE
	 */
	public void processSubscribeOK(
		ClientTransaction clientTransaction,
		Response subscribeOK) {
		messageListener.sipMeetingManager.presenceAllowed = true;
		Address address =
			((FromHeader) subscribeOK.getHeader(FromHeader.NAME)).getAddress();
		String sender = null;
		if (address.getURI().isSipURI()) {
			SipURI sipURI = ((SipURI) address.getURI());
			String host = sipURI.getHost();
			String user = sipURI.getUser();
			sender = user + "@" + host;
		}
		/*Subscriber subscriber = new Subscriber(sender);
		subscriber.setDialog(clientTransaction.getDialog());
		messageListener.sipMeetingManager.getPresentityManager().
			sendNotifyToSubscriber(
									subscriber,
									"open",
									"online");*/
	}

	/**
	 * Process the OK received response for a SUBSCRIBE
	 * @param clientTransaction - the client transaction associated with the response
	 * @param cancelOK - the OK received response for a MESSAGE
	 */
	public void processSubscribeAccepted(
		ClientTransaction clientTransaction,
		Response subscribeAccepted) {
		messageListener.sipMeetingManager.presenceAllowed = true;
		/*Address address=((FromHeader)subscribeOK.getHeader(FromHeader.NAME)).getAddress();
		String sender=null;
		if(address.getURI().isSipURI()){
			SipURI sipURI=((SipURI)address.getURI());
			String host=sipURI.getHost();
			String user=sipURI.getUser();
			sender=user+"@"+host;
		}*/
		/*Subscriber subscriber = new Subscriber(sender);
		subscriber.setDialog(clientTransaction.getDialog());
		messageListener.sipMeetingManager.getPresentityManager().
			sendNotifyToSubscriber(
									subscriber,
									"open",
									"online");*/
	}

	/**
	 * Process the OK received response for a INVITE
	 * @param clientTransaction - the client transaction associated with the response
	 * @param inviteOK - the OK received response for a INVITE
	 */
	public void processInviteOK(
		ClientTransaction clientTransaction,
		Response inviteOK) {
		CallManager callManager =
			messageListener.sipMeetingManager.getCallManager();
		//Strip out the callee
		SipURI calleeURI =
			(SipURI) ((ToHeader) inviteOK.getHeader(ToHeader.NAME))
				.getAddress()
				.getURI();
		String callee =
			"sip:" + calleeURI.getUser() + "@" + calleeURI.getHost();
		//Find the Audio call
		AudioCall call = callManager.findAudioCall(callee);
		//Send ACK
		try {
			Request ack =
				(Request) clientTransaction.getDialog().createRequest(
					Request.ACK);
			//ack.setRequestURI(calleeURI);
			System.out.println("Sending ACK : \n" + ack.toString());
			try {
				clientTransaction.getDialog().sendAck(ack);
			} catch (SipException ex) {
				System.out.println("Could not send out the ACK request! ");
				ex.printStackTrace();
			}
			//messageListener.sipProvider.sendRequest(ack);                        
		} catch (SipException ex) {
			ex.printStackTrace();
		}
		ContentTypeHeader contentTypeHeader =
			(ContentTypeHeader) inviteOK.getHeader(ContentTypeHeader.NAME);
		// no content type header means other end does not support sdp.
		if (contentTypeHeader != null) {
			String type = contentTypeHeader.getContentType();
			String subType = contentTypeHeader.getContentSubType();
			//System.out.println("the other end answer us with "+subType);				        	
			messageListener.sipMeetingManager.notifyObserversNewCallStatus(
				call);
			if (type.equals("application") && subType.equals("sdp")) {
				//Start the media session
				MediaManager mediaManager = call.getMediaManager();
				call.setVoiceMesaging(false);
				mediaManager.prepareMediaSession(
					new String(inviteOK.getRawContent()));
				mediaManager.startMediaSession(true);
			}
		} else {
			// else start the media messaging session.
			ListIterator it = inviteOK.getHeaders(AcceptHeader.NAME);
			while (it.hasNext()) {
				AcceptHeader next = (AcceptHeader) it.next();
				if (next.getContentType().equals("audio")
					&& (next.getContentSubType().equals("gsm")
						|| next.getContentSubType().equals("x-gsm"))) {
					call.setVoiceMesaging(true);
					//schedule to send the voice messages every 2 sec.
					startVoiceMessagingSchedule(callee);
				} else if (
					next.getContentType().equals("text")
						&& next.getContentSubType().equals("plain")) {
					// TODO -- textMessaging.setTextMessaging(true);
				}
			}
		}
		call.setStatus(AudioCall.IN_A_CALL);
		messageListener.sipMeetingManager.notifyObserversNewCallStatus(call);
	}

	/**
	 * Process the Busy here response
	 * @param clientTransaction - the client transaction associated with the response
	 * @param busyhere - the Busy here response
	 */
	public void processBusyHere(
		ClientTransaction clientTransaction,
		Response busyHere) {
		CallManager callManager =
			messageListener.sipMeetingManager.getCallManager();
		//Strip out the callee
		SipURI calleeURI =
			(SipURI) ((ToHeader) busyHere.getHeader(ToHeader.NAME))
				.getAddress()
				.getURI();
		String callee =
			"sip:" + calleeURI.getUser() + "@" + calleeURI.getHost();		
		Call call =
			callManager.findCall(clientTransaction.getDialog().getDialogId());
		if (call instanceof AudioCall) {
			//Strip out the Call info Header
			CallInfoHeader callInfoHeader=(CallInfoHeader)busyHere.getHeader(CallInfoHeader.NAME);
			URI uri=callInfoHeader.getInfo();
			((AudioCall)call).setURL(uri);
			call.setStatus(AudioCall.BUSY);			
			messageListener.sipMeetingManager.notifyObserversNewCallStatus(
				call);
			System.out.println(
				"Audio Call removed : " + call.getDialog().getDialogId());
			callManager.removeAudioCall((AudioCall) call);
		}
	}

	/**
	 * Process the temporary Unavailable response
	 * @param clientTransaction - the client transaction associated with the response
	 * @param temporaryUnavailable - the temporary Unavailable response
	 */
	public void processUnavailable(
		ClientTransaction clientTransaction,
		Response temporaryUnavailable) {
		CallManager callManager =
			messageListener.sipMeetingManager.getCallManager();
		//Find the call		
		Call call =
			callManager.findCall(clientTransaction.getDialog().getDialogId());
		if (call instanceof AudioCall) {
			AudioCall audioCall = (AudioCall) call;
			audioCall.setStatus(Call.TEMPORARY_UNAVAILABLE);
			messageListener.sipMeetingManager.notifyObserversNewCallStatus(
				audioCall);
			System.out.println(
				"Audio Call removed : " + call.getDialog().getDialogId());
			callManager.removeAudioCall(audioCall);
		} else if (call instanceof IMCall) {
			IMCall imCall = (IMCall) call;
			imCall.setStatus(Call.TEMPORARY_UNAVAILABLE);
			messageListener.sipMeetingManager.notifyObserversNewCallStatus(
				imCall);
			System.out.println(
				"IM Call removed : " + call.getDialog().getDialogId());
			callManager.removeIMCall(imCall);
		}
	}


	/**
	 * Process the 407 - Proxy Authentication Required
	 * @param clientTransaction - the client transaction associated with the response
	 * @param proxyAuthenticationRequired - the temporary Unavailable response
	 */
	public void processProxyAuthenticationRequired(
		ClientTransaction clientTransaction,
		Response proxyAuthenticationRequired) {
		messageListener.sipMeetingManager.setRegisterStatus(
			RegisterStatus.PROXY_AUTHENTICATION_REQUIRED);
	}

	/**
	 * Process the 405 - Method Not Allowed
	 * @param clientTransaction - the client transaction associated with the response
	 * @param proxyAuthenticationRequired - the temporary Unavailable response
	 */
	public void processMethodNotAllowed(
		ClientTransaction clientTransaction,
		Response methodNotAllowed) {
		messageListener.sipMeetingManager.presenceAllowed = false;
	}

	/**********************************************************************/
	/*                                                                    */
	/*                    Handling timeout messages                       */
	/*                                                                    */
	/**********************************************************************/

	/**
	 * Process the timed out MESSAGE
	 * @param message - the timedout request 
	 */
	public void processTimedOutMessage(Request message) {
		ToHeader toHeader = (ToHeader) (message.getHeader(ToHeader.NAME));
		Address address = toHeader.getAddress();
		if (address.getURI().isSipURI()) {
			SipURI toURI = (SipURI) address.getURI();
			messageListener.sipMeetingManager.notifyObserversIMReceived(
				new String(message.getRawContent())
					+ " has not been delivered successfully",
				toURI.getUser() + "@" + toURI.getHost());
		}
		SipURI toUri = ((SipURI)((ToHeader) message.getHeader(ToHeader.NAME)).getAddress().getURI());
                String id = toUri.getUser() + "@" + toUri.getHost();
                this.callManager.removeIMCall(id);
                
	}

	/**
	 * Process the timed out REGISTER
	 * @param message - the timedout request 
	 */
	public void processTimedOutRegister(Request register) {
		messageListener.sipMeetingManager.setRegisterStatus(
			RegisterStatus.NOT_REGISTERED);
	}

	/**
	 * Process the timed out REGISTER
	 * @param message - the timedout request 
	 */
	public void processTimedOutInvite(Request invite) {
		messageListener.sipMeetingManager.setRegisterStatus(
			AudioCall.NOT_IN_A_CALL);
	}

	/**
	 * Process the Timeout received request
	 * @param transaction - the transaction associated with the request
	 * @param timeout - the timeout request
	 */
	public void processTimeout(Transaction transaction, Request timeout) {

	}
}