Windowsxp下短信接收出现的问题，求解决。。。

[Jeffymail2008]

我在Windows XP下实现短信接收，代码是用的下载包中的ReadMessages.java。
代码如下：

// JindiSMS v3.1 
// 该程序主要用于读取GSM Modem接收到的短信。
// 金笛短信网 www.sendsms.cn
// 为节省您的开发时间，请配合金笛短信设备以达到最佳效果。 
package test;

import java.util.*;
import cn.sendsms.*;

public class ReadMessages {
	private Service srv;

	public void doIt() throws Exception {
		List msgList;
		InboundNotification inboundNotification = new InboundNotification();
		CallNotification callNotification = new CallNotification();
		try {
			System.out.println("示例: 从串口短信设备读取短信.");
			System.out.println(Library.getLibraryDescription());
			System.out.println("版本: " + Library.getLibraryVersion());
			srv = new Service();
			// 创建串口GSM modem连接通道.
			SerialModemGateway gateway = new SerialModemGateway("jindi", "COM3", 115200, "wavecom", "M1306B", srv.getLogger());
			// 设置通道是否接收短信
			gateway.setInbound(true);
			// 设置通道是否可以发送短信
			gateway.setOutbound(true);
			gateway.setSimPin("0000");
			// 设置短信到达后调用方法
			gateway.setInboundNotification(inboundNotification);
			gateway.setCallNotification(callNotification);
			// 增加短信通道到服务对象
			srv.addGateway(gateway);
			// 如果有多个设备，可以依次添加到服务对象。

			// 启动服务! (连接到所有已定义的设备通道)
			srv.startService();
			System.out.println();
			System.out.println("GSM Modem 信息:");
			System.out.println("  厂家: " + gateway.getManufacturer());
			System.out.println("  型号: " + gateway.getModel());
			System.out.println("  序列号: " + gateway.getSerialNo());
			System.out.println("  SIM IMSI: " + gateway.getImsi());
			System.out.println("  信号强度: " + gateway.getSignalLevel() + "%");
			System.out.println("  电池容量: " + gateway.getBatteryLevel() + "%");
			System.out.println();
			// 读取短信.
			msgList = new ArrayList();
			srv.readMessages(msgList, MessageClasses.ALL);
			for (int i = 0; i < msgList.size(); i++) {
				InboundMessage inMsg = (InboundMessage)msgList.get(i);
				System.out.println(inMsg.toString());
			}
			// 进入休眠状态. 如果有新短信进来，就会重新激活。
			System.out.println("进入等待状态... - 按 <enter>回车键退出.");
			System.in.read();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			srv.stopService();
		}
	}

	public class InboundNotification implements IInboundMessageNotification {
		public void process(String gatewayId, MessageTypes msgType,
				String memLoc, int memIndex) {
			List msgList;
			System.out.println("received a message, msgType=" + msgType);
			if (msgType == MessageTypes.INBOUND) {
				System.out.println(">>> 监测到设备收到新的短信: " + gatewayId + " : "
						+ memLoc + " @ " + memIndex);
				try {
					// Read...
					msgList = new ArrayList();
					srv.readMessages(msgList, MessageClasses.UNREAD, gatewayId);
					for (int i = 0; i < msgList.size(); i++)
						System.out.println(msgList.get(i));
					// ...and reply.
					// for (int i = 0; i < msgList.size(); i ++)
					// srv.sendMessage(new
					// OutboundMessage(msgList.get(i).getOriginator(),
					// "Got it!"), gatewayId);
				} catch (Exception e) {
					System.out.println("有异常...");
					e.printStackTrace();
				}
			} else if (msgType == MessageTypes.STATUSREPORT) {
				System.out.println(">>> 监测到设备收到短信状态报告: " + gatewayId + " : "
						+ memLoc + " @ " + memIndex);
			}
		}
	}

	public class CallNotification implements ICallNotification {
		public void process(String gatewayId, String callerId) {
			System.out.println(">>> 监测到有电话打入: " + gatewayId + " : " + callerId);
		}
	}

	public static void main(String args[]) {
		ReadMessages app = new ReadMessages();
		try {
			app.doIt();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

其中，

srv.readMessages(msgList, MessageClasses.ALL);

上面收取短信的语句貌似不稳定，有时候能拿到短信，但拿到的不是所有的短信，未读的短信拿不到，并且不能收到新短信，即InboundNotification没有触发；有时候直接报一下错：

cn.sendsms.TimeoutException: No response from device.
        at cn.sendsms.ModemDriver$CharQueue.get(ModemDriver.java:388)
        at cn.sendsms.ModemDriver.getResponse(ModemDriver.java:202)
        at cn.sendsms.ATHandler.getSimStatus(ATHandler.java:71)
        at cn.sendsms.ModemDriver.connect(ModemDriver.java:89)
        at cn.sendsms.ModemGateway.startGateway(ModemGateway.java:76)
        at cn.sendsms.Service.startService(Service.java:114)
        at SendMessage.doIt(SendMessage.java:32)
        at SendMessage.main(SendMessage.java:82)

又有时候报一下错误：

0 [main] ERROR org.smslib  - *****
0 [main] ERROR org.smslib  - Unhandled SMS in inbox, skipping!
0 [main] ERROR org.smslib  - Err: For input string: "
0 [main] ERROR org.smslib  - *****

51516 [Thread-0] ERROR org.smslib  - ModemDriver: KeepAlive Error: No response from device.

这到底是什么问题，甚是奇怪。。。