diff --git a/src/main/java/com/genersoft/iot/vmp/web/gb28181/ApiDeviceController.java b/src/main/java/com/genersoft/iot/vmp/web/gb28181/ApiDeviceController.java
index 5065523e..57c79799 100644
--- a/src/main/java/com/genersoft/iot/vmp/web/gb28181/ApiDeviceController.java
+++ b/src/main/java/com/genersoft/iot/vmp/web/gb28181/ApiDeviceController.java
@@ -109,12 +109,6 @@ public class ApiDeviceController {
 //        }
         JSONObject result = new JSONObject();
         // 查询设备是否存在
-        Device device = storager.queryVideoDevice(serial);
-        if (device == null) {
-            result.put("ChannelCount", 0);
-            result.put("ChannelList", "[]");
-            return result;
-        }
         List<DeviceChannel> deviceChannels;
         List<String> channelIds = null;
         if (!StringUtils.isEmpty(code)) {
diff --git a/src/main/java/com/genersoft/iot/vmp/web/gb28181/dto/DeviceChannelExtent.java b/src/main/java/com/genersoft/iot/vmp/web/gb28181/dto/DeviceChannelExtent.java
new file mode 100644
index 00000000..94943524
--- /dev/null
+++ b/src/main/java/com/genersoft/iot/vmp/web/gb28181/dto/DeviceChannelExtent.java
@@ -0,0 +1,577 @@
+package com.genersoft.iot.vmp.web.gb28181.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+@Schema(description = "通道信息")
+public class DeviceChannelExtent {
+
+
+	/**
+	 * 数据库自增ID
+	 */
+	@Schema(description = "数据库自增ID")
+	private int id;
+
+	/**
+	 * 通道国标编号
+	 */
+	@Schema(description = "通道国标编号")
+	private String channelId;
+
+	/**
+	 * 设备国标编号
+	 */
+	@Schema(description = "设备国标编号")
+	private String deviceId;
+	
+	/**
+	 * 通道名
+	 */
+	@Schema(description = "名称")
+	private String name;
+	
+	/**
+	 * 生产厂商
+	 */
+	@Schema(description = "生产厂商")
+	private String manufacture;
+	
+	/**
+	 * 型号
+	 */
+	@Schema(description = "型号")
+	private String model;
+	
+	/**
+	 * 设备归属
+	 */
+	@Schema(description = "设备归属")
+	private String owner;
+	
+	/**
+	 * 行政区域
+	 */
+	@Schema(description = "行政区域")
+	private String civilCode;
+	
+	/**
+	 * 警区
+	 */
+	@Schema(description = "警区")
+	private String block;
+
+	/**
+	 * 安装地址
+	 */
+	@Schema(description = "安装地址")
+	private String address;
+	
+	/**
+	 * 是否有子设备 1有, 0没有
+	 */
+	@Schema(description = "是否有子设备 1有, 0没有")
+	private int parental;
+	
+	/**
+	 * 父级id
+	 */
+	@Schema(description = "父级id")
+	private String parentId;
+	
+	/**
+	 * 信令安全模式  缺省为0; 0:不采用; 2: S/MIME签名方式; 3: S/ MIME加密签名同时采用方式; 4:数字摘要方式
+	 */
+	@Schema(description = "信令安全模式  缺省为0; 0:不采用; 2: S/MIME签名方式; 3: S/ MIME加密签名同时采用方式; 4:数字摘要方式")
+	private int safetyWay;
+	
+	/**
+	 * 注册方式 缺省为1;1:符合IETFRFC3261标准的认证注册模 式; 2:基于口令的双向认证注册模式; 3:基于数字证书的双向认证注册模式
+	 */
+	@Schema(description = "注册方式 缺省为1;1:符合IETFRFC3261标准的认证注册模 式; 2:基于口令的双向认证注册模式; 3:基于数字证书的双向认证注册模式")
+	private int registerWay;
+	
+	/**
+	 * 证书序列号
+	 */
+	@Schema(description = "证书序列号")
+	private String certNum;
+	
+	/**
+	 * 证书有效标识 缺省为0;证书有效标识:0:无效1: 有效
+	 */
+	@Schema(description = "证书有效标识 缺省为0;证书有效标识:0:无效1: 有效")
+	private int certifiable;
+	
+	/**
+	 * 证书无效原因码
+	 */
+	@Schema(description = "证书无效原因码")
+	private int errCode;
+	
+	/**
+	 * 证书终止有效期
+	 */
+	@Schema(description = "证书终止有效期")
+	private String endTime;
+	
+	/**
+	 * 保密属性 缺省为0; 0:不涉密, 1:涉密
+	 */
+	@Schema(description = "保密属性 缺省为0; 0:不涉密, 1:涉密")
+	private String secrecy;
+	
+	/**
+	 * IP地址
+	 */
+	@Schema(description = "IP地址")
+	private String ipAddress;
+	
+	/**
+	 * 端口号
+	 */
+	@Schema(description = "端口号")
+	private int port;
+	
+	/**
+	 * 密码
+	 */
+	@Schema(description = "密码")
+	private String password;
+
+	/**
+	 * 云台类型
+	 */
+	@Schema(description = "云台类型")
+	private int PTZType;
+
+	/**
+	 * 云台类型描述字符串
+	 */
+	@Schema(description = "云台类型描述字符串")
+	private String PTZTypeText;
+
+	/**
+	 * 创建时间
+	 */
+	@Schema(description = "创建时间")
+	private String createTime;
+
+	/**
+	 * 更新时间
+	 */
+	@Schema(description = "更新时间")
+	private String updateTime;
+	
+	/**
+	 * 在线/离线
+	 * 1在线,0离线
+	 * 默认在线
+	 * 信令:
+	 * <Status>ON</Status>
+	 * <Status>OFF</Status>
+	 * 遇到过NVR下的IPC下发信令可以推流， 但是 Status 响应 OFF
+	 */
+	@Schema(description = "在线/离线， 1在线,0离线")
+	private int status;
+
+	/**
+	 * 经度
+	 */
+	@Schema(description = "经度")
+	private double longitude;
+	
+	/**
+	 * 纬度
+	 */
+	@Schema(description = "纬度")
+	private double latitude;
+
+	/**
+	 * 经度 GCJ02
+	 */
+	@Schema(description = "GCJ02坐标系经度")
+	private double longitudeGcj02;
+
+	/**
+	 * 纬度 GCJ02
+	 */
+	@Schema(description = "GCJ02坐标系纬度")
+	private double latitudeGcj02;
+
+	/**
+	 * 经度 WGS84
+	 */
+	@Schema(description = "WGS84坐标系经度")
+	private double longitudeWgs84;
+
+	/**
+	 * 纬度 WGS84
+	 */
+	@Schema(description = "WGS84坐标系纬度")
+	private double latitudeWgs84;
+
+	/**
+	 * 子设备数
+	 */
+	@Schema(description = "子设备数")
+	private int subCount;
+
+	/**
+	 * 流唯一编号，存在表示正在直播
+	 */
+	@Schema(description = "流唯一编号，存在表示正在直播")
+	private String  streamId;
+
+	/**
+	 *  是否含有音频
+	 */
+	@Schema(description = "是否含有音频")
+	private boolean hasAudio;
+
+	/**
+	 * 标记通道的类型，0->国标通道 1->直播流通道 2->业务分组/虚拟组织/行政区划
+	 */
+	@Schema(description = "标记通道的类型，0->国标通道 1->直播流通道 2->业务分组/虚拟组织/行政区划")
+	private int channelType;
+
+	/**
+	 * 业务分组
+	 */
+	@Schema(description = "业务分组")
+	private String businessGroupId;
+
+	/**
+	 * GPS的更新时间
+	 */
+	@Schema(description = "GPS的更新时间")
+	private String gpsTime;
+
+	public int getId() {
+		return id;
+	}
+
+	public void setId(int id) {
+		this.id = id;
+	}
+
+	public String getDeviceId() {
+		return deviceId;
+	}
+
+	public void setDeviceId(String deviceId) {
+		this.deviceId = deviceId;
+	}
+
+	public void setPTZType(int PTZType) {
+		this.PTZType = PTZType;
+		switch (PTZType) {
+			case 0:
+				this.PTZTypeText = "未知";
+				break;
+			case 1:
+				this.PTZTypeText = "球机";
+				break;
+			case 2:
+				this.PTZTypeText = "半球";
+				break;
+			case 3:
+				this.PTZTypeText = "固定枪机";
+				break;
+			case 4:
+				this.PTZTypeText = "遥控枪机";
+				break;
+		}
+	}
+
+	public String getChannelId() {
+		return channelId;
+	}
+
+	public void setChannelId(String channelId) {
+		this.channelId = channelId;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getManufacture() {
+		return manufacture;
+	}
+
+	public void setManufacture(String manufacture) {
+		this.manufacture = manufacture;
+	}
+
+	public String getModel() {
+		return model;
+	}
+
+	public void setModel(String model) {
+		this.model = model;
+	}
+
+	public String getOwner() {
+		return owner;
+	}
+
+	public void setOwner(String owner) {
+		this.owner = owner;
+	}
+
+	public String getCivilCode() {
+		return civilCode;
+	}
+
+	public void setCivilCode(String civilCode) {
+		this.civilCode = civilCode;
+	}
+
+	public String getBlock() {
+		return block;
+	}
+
+	public void setBlock(String block) {
+		this.block = block;
+	}
+
+	public String getAddress() {
+		return address;
+	}
+
+	public void setAddress(String address) {
+		this.address = address;
+	}
+
+	public int getParental() {
+		return parental;
+	}
+
+	public void setParental(int parental) {
+		this.parental = parental;
+	}
+
+	public String getParentId() {
+		return parentId;
+	}
+
+	public void setParentId(String parentId) {
+		this.parentId = parentId;
+	}
+
+	public int getSafetyWay() {
+		return safetyWay;
+	}
+
+	public void setSafetyWay(int safetyWay) {
+		this.safetyWay = safetyWay;
+	}
+
+	public int getRegisterWay() {
+		return registerWay;
+	}
+
+	public void setRegisterWay(int registerWay) {
+		this.registerWay = registerWay;
+	}
+
+	public String getCertNum() {
+		return certNum;
+	}
+
+	public void setCertNum(String certNum) {
+		this.certNum = certNum;
+	}
+
+	public int getCertifiable() {
+		return certifiable;
+	}
+
+	public void setCertifiable(int certifiable) {
+		this.certifiable = certifiable;
+	}
+
+	public int getErrCode() {
+		return errCode;
+	}
+
+	public void setErrCode(int errCode) {
+		this.errCode = errCode;
+	}
+
+	public String getEndTime() {
+		return endTime;
+	}
+
+	public void setEndTime(String endTime) {
+		this.endTime = endTime;
+	}
+
+	public String getSecrecy() {
+		return secrecy;
+	}
+
+	public void setSecrecy(String secrecy) {
+		this.secrecy = secrecy;
+	}
+
+	public String getIpAddress() {
+		return ipAddress;
+	}
+
+	public void setIpAddress(String ipAddress) {
+		this.ipAddress = ipAddress;
+	}
+
+	public int getPort() {
+		return port;
+	}
+
+	public void setPort(int port) {
+		this.port = port;
+	}
+
+	public String getPassword() {
+		return password;
+	}
+
+	public void setPassword(String password) {
+		this.password = password;
+	}
+
+	public int getPTZType() {
+		return PTZType;
+	}
+
+	public String getPTZTypeText() {
+		return PTZTypeText;
+	}
+
+	public void setPTZTypeText(String PTZTypeText) {
+		this.PTZTypeText = PTZTypeText;
+	}
+
+	public int getStatus() {
+		return status;
+	}
+
+	public void setStatus(int status) {
+		this.status = status;
+	}
+
+	public double getLongitude() {
+		return longitude;
+	}
+
+	public void setLongitude(double longitude) {
+		this.longitude = longitude;
+	}
+
+	public double getLatitude() {
+		return latitude;
+	}
+
+	public void setLatitude(double latitude) {
+		this.latitude = latitude;
+	}
+
+	public double getLongitudeGcj02() {
+		return longitudeGcj02;
+	}
+
+	public void setLongitudeGcj02(double longitudeGcj02) {
+		this.longitudeGcj02 = longitudeGcj02;
+	}
+
+	public double getLatitudeGcj02() {
+		return latitudeGcj02;
+	}
+
+	public void setLatitudeGcj02(double latitudeGcj02) {
+		this.latitudeGcj02 = latitudeGcj02;
+	}
+
+	public double getLongitudeWgs84() {
+		return longitudeWgs84;
+	}
+
+	public void setLongitudeWgs84(double longitudeWgs84) {
+		this.longitudeWgs84 = longitudeWgs84;
+	}
+
+	public double getLatitudeWgs84() {
+		return latitudeWgs84;
+	}
+
+	public void setLatitudeWgs84(double latitudeWgs84) {
+		this.latitudeWgs84 = latitudeWgs84;
+	}
+
+	public int getSubCount() {
+		return subCount;
+	}
+
+	public void setSubCount(int subCount) {
+		this.subCount = subCount;
+	}
+
+	public boolean isHasAudio() {
+		return hasAudio;
+	}
+
+	public void setHasAudio(boolean hasAudio) {
+		this.hasAudio = hasAudio;
+	}
+
+	public String getStreamId() {
+		return streamId;
+	}
+
+	public void setStreamId(String streamId) {
+		this.streamId = streamId;
+	}
+
+	public String getCreateTime() {
+		return createTime;
+	}
+
+	public void setCreateTime(String createTime) {
+		this.createTime = createTime;
+	}
+
+	public String getUpdateTime() {
+		return updateTime;
+	}
+
+	public void setUpdateTime(String updateTime) {
+		this.updateTime = updateTime;
+	}
+
+	public int getChannelType() {
+		return channelType;
+	}
+
+	public void setChannelType(int channelType) {
+		this.channelType = channelType;
+	}
+
+	public String getBusinessGroupId() {
+		return businessGroupId;
+	}
+
+	public void setBusinessGroupId(String businessGroupId) {
+		this.businessGroupId = businessGroupId;
+	}
+
+	public String getGpsTime() {
+		return gpsTime;
+	}
+
+	public void setGpsTime(String gpsTime) {
+		this.gpsTime = gpsTime;
+	}
+}