diff --git a/gb28181/channel.go b/gb28181/channel.go
index 2f3fa77..95b2749 100644
--- a/gb28181/channel.go
+++ b/gb28181/channel.go
@@ -1,6 +1,7 @@
 package gb28181
 
 import (
+	"errors"
 	"fmt"
 	config "lalmax/conf"
 	"net/http"
@@ -41,6 +42,11 @@ type ChannelInfo struct {
 	Latitude     string        `xml:"Latitude"`     // 纬度
 	StreamName   string        `xml:"-"`
 	serial       string
+	mediaInfo    struct {
+		IsInvite   bool
+		Ssrc       uint32
+		StreamName string
+	}
 }
 
 type ChannelStatus string
@@ -64,9 +70,8 @@ func (channel *Channel) CanInvite(streamName string) bool {
 	if channel.Parental != 0 {
 		return false
 	}
-	d := channel.device
 
-	if d.mediaInfo.IsInvite {
+	if channel.mediaInfo.IsInvite {
 		return false
 	}
 
@@ -210,9 +215,9 @@ func (channel *Channel) Invite(opt *InviteOptions, conf config.GB28181Config, st
 			}
 		}
 
-		d.mediaInfo.IsInvite = true
-		d.mediaInfo.Ssrc = opt.SSRC
-		d.mediaInfo.StreamName = streamName
+		channel.mediaInfo.IsInvite = true
+		channel.mediaInfo.Ssrc = opt.SSRC
+		channel.mediaInfo.StreamName = streamName
 
 		ackReq := sip.NewAckRequest("", invite, inviteRes, "", nil)
 		channel.ackReq = ackReq
@@ -231,8 +236,11 @@ func (channel *Channel) Bye(streamName string) (err error) {
 		if err == nil {
 			channel.ackReq = nil
 		}
+		return err
+	} else {
+		return errors.New("channel has been closed")
 	}
-	return err
+
 }
 func (channel *Channel) CreateRequst(Method sip.RequestMethod, conf config.GB28181Config) (req sip.Request) {
 	d := channel.device
diff --git a/gb28181/device.go b/gb28181/device.go
index f3a46cb..3197378 100644
--- a/gb28181/device.go
+++ b/gb28181/device.go
@@ -54,11 +54,6 @@ type Device struct {
 	GpsTime      time.Time //gps时间
 	Longitude    string    //经度
 	Latitude     string    //纬度
-	mediaInfo    struct {
-		IsInvite   bool
-		Ssrc       uint32
-		StreamName string
-	}
 }
 
 func (d *Device) syncChannels(conf config.GB28181Config) {
diff --git a/gb28181/http_logic.go b/gb28181/http_logic.go
index d718e5f..a9e9885 100644
--- a/gb28181/http_logic.go
+++ b/gb28181/http_logic.go
@@ -80,8 +80,12 @@ func (g *GbLogic) UpdateNotify(c *gin.Context) {
 	if err := c.ShouldBindJSON(&reqUpdateNotify); err != nil {
 		ResponseErrorWithMsg(c, CodeInvalidParam, CodeInvalidParam.Msg())
 	} else {
-		g.s.GetSyncChannels(reqUpdateNotify.DeviceId)
-		ResponseSuccess(c, nil)
+		if g.s.GetSyncChannels(reqUpdateNotify.DeviceId) {
+			ResponseSuccess(c, nil)
+		} else {
+			ResponseErrorWithMsg(c, CodeDeviceNotRegister, CodeDeviceNotRegister.Msg())
+		}
+
 	}
 
 }
diff --git a/gb28181/server.go b/gb28181/server.go
index 28aed9c..1b537f5 100644
--- a/gb28181/server.go
+++ b/gb28181/server.go
@@ -122,11 +122,15 @@ func (s *GB28181Server) CheckSsrc(ssrc uint32) (string, bool) {
 
 	Devices.Range(func(_, value any) bool {
 		d := value.(*Device)
-		if d.mediaInfo.Ssrc == ssrc {
-			isValidSsrc = true
-			streamName = d.mediaInfo.StreamName
-		}
-
+		d.channelMap.Range(func(key, value any) bool {
+			ch := value.(*Channel)
+			if ch.mediaInfo.Ssrc == ssrc {
+				isValidSsrc = true
+				streamName = ch.mediaInfo.StreamName
+				return false
+			}
+			return true
+		})
 		return true
 	})
 
@@ -140,11 +144,19 @@ func (s *GB28181Server) CheckSsrc(ssrc uint32) (string, bool) {
 func (s *GB28181Server) NotifyClose(streamName string) {
 	Devices.Range(func(_, value any) bool {
 		d := value.(*Device)
-		if d.mediaInfo.StreamName == streamName {
-			d.mediaInfo.IsInvite = false
-			d.mediaInfo.Ssrc = 0
-			d.mediaInfo.StreamName = ""
-		}
+		d.channelMap.Range(func(key, value any) bool {
+			ch := value.(*Channel)
+			if ch.mediaInfo.StreamName == streamName {
+				if ch.mediaInfo.IsInvite {
+					ch.Bye(streamName)
+				}
+				ch.mediaInfo.IsInvite = false
+				ch.mediaInfo.Ssrc = 0
+				ch.mediaInfo.StreamName = ""
+				return false
+			}
+			return true
+		})
 
 		return true
 	})
@@ -236,10 +248,13 @@ func (s *GB28181Server) GetAllSyncChannels() {
 		return true
 	})
 }
-func (s *GB28181Server) GetSyncChannels(deviceId string) {
+func (s *GB28181Server) GetSyncChannels(deviceId string) bool {
 	if v, ok := Devices.Load(deviceId); ok {
 		d := v.(*Device)
 		d.syncChannels(s.conf)
+		return true
+	} else {
+		return false
 	}
 }
 func (s *GB28181Server) FindChannel(deviceId string, channelId string) (channel *Channel) {