diff --git a/gb28181-sip/pom.xml b/gb28181-sip/pom.xml
index ce34a8f..881fe0c 100644
--- a/gb28181-sip/pom.xml
+++ b/gb28181-sip/pom.xml
@@ -19,6 +19,13 @@
     </properties>
 
     <dependencies>
+        <!--hutool-->
+        <dependency>
+            <groupId>cn.hutool</groupId>
+            <artifactId>hutool-core</artifactId>
+            <version>${hutool.version}</version>
+        </dependency>
+
         <!-- Jackson -->
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
diff --git a/gb28181-sip/src/main/java/cn/skcks/docking/gb28181/sip/utils/SipUtil.java b/gb28181-sip/src/main/java/cn/skcks/docking/gb28181/sip/utils/SipUtil.java
new file mode 100644
index 0000000..5b7f8d4
--- /dev/null
+++ b/gb28181-sip/src/main/java/cn/skcks/docking/gb28181/sip/utils/SipUtil.java
@@ -0,0 +1,159 @@
+package cn.skcks.docking.gb28181.sip.utils;
+
+import cn.hutool.core.util.IdUtil;
+import gov.nist.javax.sip.address.AddressImpl;
+import gov.nist.javax.sip.address.SipUri;
+import gov.nist.javax.sip.header.Subject;
+import gov.nist.javax.sip.message.SIPRequest;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.ObjectUtils;
+import org.apache.commons.lang3.RandomStringUtils;
+import org.apache.commons.lang3.StringUtils;
+
+import javax.sip.PeerUnavailableException;
+import javax.sip.SipFactory;
+import javax.sip.header.FromHeader;
+import javax.sip.header.Header;
+import javax.sip.header.UserAgentHeader;
+import javax.sip.message.Request;
+import java.text.ParseException;
+import java.util.ArrayList;
+import java.util.List;
+
+@SuppressWarnings({"unused"})
+@Slf4j
+public class SipUtil {
+    public static String UserAgent = "GB28181-Docking-Platform";
+
+    public static String getIdFromFromHeader(FromHeader fromHeader) {
+        AddressImpl address = (AddressImpl)fromHeader.getAddress();
+        SipUri uri = (SipUri) address.getURI();
+        return uri.getUser();
+    }
+
+    public static String getIdFromFromHeader(Request request) {
+        FromHeader fromHeader = (FromHeader)request.getHeader(FromHeader.NAME);
+        return getIdFromFromHeader(fromHeader);
+    }
+
+    /**
+     * 从subject读取channelId
+     * */
+    public static String getChannelIdFromRequest(Request request) {
+        Header subject = request.getHeader("subject");
+        if (subject == null) {
+            // 如果缺失subject
+            return null;
+        }
+        return ((Subject) subject).getSubject().split(":")[0];
+    }
+
+    public static String generateViaTag() {
+        return "z9hG4bK" + RandomStringUtils.randomNumeric(10);
+    }
+
+    public static UserAgentHeader createUserAgentHeader() throws PeerUnavailableException, ParseException {
+        List<String> agentParam = new ArrayList<>();
+        agentParam.add("GB28181-Docking-Platform");
+        agentParam.add(" ");
+        agentParam.add(StringUtils.replace(UserAgent,"-SNAPSHOT",""));
+        return SipFactory.getInstance().createHeaderFactory().createUserAgentHeader(agentParam);
+    }
+
+    public static String generateFromTag(){
+        return IdUtil.fastSimpleUUID();
+    }
+
+    public static String generateTag(){
+        return String.valueOf(System.currentTimeMillis());
+    }
+
+    /**
+     * 从请求中获取设备ip地址和端口号
+     * @param request 请求
+     * @param sipUseSourceIpAsRemoteAddress  false 从via中获取地址， true 直接获取远程地址
+     * @return 地址信息
+     */
+    public static RemoteInfo getRemoteInfoFromRequest(SIPRequest request, boolean sipUseSourceIpAsRemoteAddress) {
+        String remoteAddress;
+        int remotePort;
+        if (sipUseSourceIpAsRemoteAddress) {
+            remoteAddress = request.getPeerPacketSourceAddress().getHostAddress();
+            remotePort = request.getPeerPacketSourcePort();
+
+        } else {
+            // 判断RPort是否改变，改变则说明路由nat信息变化，修改设备信息
+            // 获取到通信地址等信息
+            remoteAddress = request.getTopmostViaHeader().getReceived();
+            remotePort = request.getTopmostViaHeader().getRPort();
+            // 解析本地地址替代
+            if (ObjectUtils.isEmpty(remoteAddress) || remotePort == -1) {
+                remoteAddress = request.getPeerPacketSourceAddress().getHostAddress();
+                remotePort = request.getPeerPacketSourcePort();
+            }
+        }
+
+        return new RemoteInfo(remoteAddress, remotePort);
+    }
+
+    /**
+     * 云台指令码计算
+     *
+     * @param leftRight  镜头左移右移 0:停止 1:左移 2:右移
+     * @param upDown     镜头上移下移 0:停止 1:上移 2:下移
+     * @param inOut      镜头放大缩小 0:停止 1:缩小 2:放大
+     * @param moveSpeed  镜头移动速度 默认 0XFF (0-255)
+     * @param zoomSpeed  镜头缩放速度 默认 0X1 (0-255)
+     */
+    public static String cmdString(int leftRight, int upDown, int inOut, int moveSpeed, int zoomSpeed) {
+        int cmdCode = 0;
+        if (leftRight == 2) {
+            cmdCode|=0x01;		// 右移
+        } else if(leftRight == 1) {
+            cmdCode|=0x02;		// 左移
+        }
+        if (upDown == 2) {
+            cmdCode|=0x04;		// 下移
+        } else if(upDown == 1) {
+            cmdCode|=0x08;		// 上移
+        }
+        if (inOut == 2) {
+            cmdCode |= 0x10;	// 放大
+        } else if(inOut == 1) {
+            cmdCode |= 0x20;	// 缩小
+        }
+        StringBuilder builder = new StringBuilder("A50F01");
+        String strTmp;
+        strTmp = String.format("%02X", cmdCode);
+        builder.append(strTmp, 0, 2);
+        strTmp = String.format("%02X", moveSpeed);
+        builder.append(strTmp, 0, 2);
+        builder.append(strTmp, 0, 2);
+
+        //优化zoom低倍速下的变倍速率
+        if ((zoomSpeed > 0) && (zoomSpeed <16))
+        {
+            zoomSpeed = 16;
+        }
+        strTmp = String.format("%X", zoomSpeed);
+        builder.append(strTmp, 0, 1).append("0");
+        //计算校验码
+        int checkCode = (0XA5 + 0X0F + 0X01 + cmdCode + moveSpeed + moveSpeed + (zoomSpeed /*<< 4*/ & 0XF0)) % 0X100;
+        strTmp = String.format("%02X", checkCode);
+        builder.append(strTmp, 0, 2);
+        return builder.toString();
+    }
+
+    @Data
+    @Builder
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class RemoteInfo{
+        private String ip;
+        private int port;
+    }
+}
diff --git a/pom.xml b/pom.xml
index b34f256..dd1551c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -49,7 +49,7 @@
 		<pagehelper.version>1.4.7</pagehelper.version>
 
 		<!--工具-->
-		<hutool.version>5.8.11</hutool.version>
+		<hutool.version>5.8.22</hutool.version>
 
 		<!--SpringDoc-->
 		<springdoc.version>2.2.0</springdoc.version>