diff --git a/src/main/java/com/inspect/tcpserver/sip/service/SipClientService.java b/src/main/java/com/inspect/tcpserver/sip/service/SipClientService.java
index f0a4f6a..e2472ec 100644
--- a/src/main/java/com/inspect/tcpserver/sip/service/SipClientService.java
+++ b/src/main/java/com/inspect/tcpserver/sip/service/SipClientService.java
@@ -19,7 +19,10 @@ import javax.sip.header.*;
 import javax.sip.message.MessageFactory;
 import javax.sip.message.Request;
 import javax.sip.message.Response;
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
 import java.io.UnsupportedEncodingException;
+import java.net.*;
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.util.*;
@@ -81,6 +84,13 @@ public class SipClientService implements SipListener {
 
     private AtomicInteger cSeqCounter = new AtomicInteger(1);
 
+    private static final String[] IP_SERVICES = {
+            "https://api.ipify.org",
+            "https://checkip.amazonaws.com",
+            "https://ifconfig.me/ip",
+            "https://icanhazip.com"
+    };
+
     private static class SubscriptionInfo {
         String callId;
         FromHeader from;
@@ -179,7 +189,25 @@ public class SipClientService implements SipListener {
         headerFactory = sipFactory.createHeaderFactory();
         addressFactory = sipFactory.createAddressFactory();
         messageFactory = sipFactory.createMessageFactory();
-
+        // 获取本地实际IP地址（不是0.0.0.0）
+        if (localIp == null || localIp.equals("0.0.0.0")) {
+            try {
+                // 尝试获取公网IP
+                String publicIp = getPublicIp();
+                if (publicIp != null && !publicIp.isEmpty()) {
+                    log.info("Detected public IP: {}", publicIp);
+                    localIp = publicIp;
+                } else {
+                    // 使用本地IP作为备选
+                    localIp = InetAddress.getLocalHost().getHostAddress();
+                    log.info("Using local IP: {}", localIp);
+                }
+            } catch (Exception e) {
+                log.warn("Failed to get public IP, using local IP", e);
+                localIp = InetAddress.getLocalHost().getHostAddress();
+            }
+        }
+        log.info("Local IP: " + localIp);
         Properties properties = new Properties();
         properties.setProperty("javax.sip.STACK_NAME", "spring-boot-sip-stack");
         properties.setProperty("gov.nist.javax.sip.IP_ADDRESS", localIp);
@@ -196,9 +224,50 @@ public class SipClientService implements SipListener {
         sendRegister(null);
     }
 
+    public static String getPublicIp() {
+        for (String service : IP_SERVICES) {
+            try {
+                URL url = new URL(service);
+                try (BufferedReader in = new BufferedReader(
+                        new InputStreamReader(url.openStream(), "UTF-8"))) {
+                    String ip = in.readLine();
+                    if (ip != null && !ip.trim().isEmpty()) {
+                        return ip.trim();
+                    }
+                }
+            } catch (Exception e) {
+                // 尝试下一个服务
+                continue;
+            }
+        }
+        return null;
+    }
+
+    // 获取本地IP地址的方法
+    private String getLocalIpAddress() throws SocketException {
+        Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
+        while (interfaces.hasMoreElements()) {
+            NetworkInterface iface = interfaces.nextElement();
+            // 排除回环接口和未启用的接口
+            if (iface.isLoopback() || !iface.isUp()) {
+                continue;
+            }
+
+            Enumeration<InetAddress> addresses = iface.getInetAddresses();
+            while (addresses.hasMoreElements()) {
+                InetAddress addr = addresses.nextElement();
+                // 优先使用IPv4地址
+                if (addr instanceof Inet4Address && !addr.isLoopbackAddress()) {
+                    return addr.getHostAddress();
+                }
+            }
+        }
+        return null;
+    }
+
     public void sendRegister(AuthorizationHeader authHeader) throws Exception {
         SipURI requestUri = addressFactory.createSipURI(null, domain);
-        requestUri.setTransportParam(transport.toUpperCase());
+//        requestUri.setTransportParam(transport.toUpperCase());
         requestUri.setPort(port);
 
         Address fromAddress = addressFactory.createAddress(username, addressFactory.createSipURI(username, domain));
@@ -214,7 +283,7 @@ public class SipClientService implements SipListener {
         SipURI contactUri = addressFactory.createSipURI(username, localIp);
         contactUri.setPort(localPort);
         contactUri.setTransportParam(transport.toUpperCase());
-        contactUri.setParameter("deviceid", "123456");
+//        contactUri.setParameter("deviceid", "123456");
 
         Address contactAddress = addressFactory.createAddress(contactUri);
         ContactHeader contactHeader = headerFactory.createContactHeader(contactAddress);
@@ -244,7 +313,7 @@ public class SipClientService implements SipListener {
         if (authHeader != null) {
             request.addHeader(authHeader);
         }
-
+        log.info("Sending REGISTER request:\n" + request);
         lastRegisterTransaction = sipProvider.getNewClientTransaction(request);
         lastRegisterTransaction.sendRequest();
     }
@@ -395,8 +464,8 @@ public class SipClientService implements SipListener {
         CSeqHeader cSeqHeader = (CSeqHeader) response.getHeader(CSeqHeader.NAME);
         if (cSeqHeader == null) return;
         String method = cSeqHeader.getMethod();
-        log.info("Received response: {}, method: {}", status, method);
-
+        log.info("Received response: {} {}, method: {}", response.getStatusCode(), response.getReasonPhrase(), method);
+        log.info("Response:\n {}", response);
         try {
             if (Request.REGISTER.equalsIgnoreCase(method)) {
                 if (status == 401 || status == 407) {