diff --git a/conf/lalmax.conf.json b/conf/lalmax.conf.json
index 9324c00..c9a67cb 100644
--- a/conf/lalmax.conf.json
+++ b/conf/lalmax.conf.json
@@ -26,16 +26,14 @@
       "enable": true,
       "serial": "34020000002000000001",
       "realm": "3402000000",
-      "sipNetwork": "tcp",
-      "sipIp": "100.100.108.230",
+      "sipIp": "192.168.254.165",
       "sipPort": 5060,
+      "sipNetwork": "udp",
       "username": "",
-	    "quickLogin": true,
       "media_config": {
-        "mediaIp": "100.100.108.230",
-        "tcp_listen_port": 30000,
-        "udp_listen_port": 30000
-      }
+        "mediaIp": "192.168.254.165"
+      },
+	  "quickLogin": true
     },
     "onvif_config": {
       "enable": true
diff --git a/gb28181/channel.go b/gb28181/channel.go
index f8b85a7..2f3fa77 100644
--- a/gb28181/channel.go
+++ b/gb28181/channel.go
@@ -40,6 +40,7 @@ type ChannelInfo struct {
 	Longitude    string        `xml:"Longitude"`    // 经度
 	Latitude     string        `xml:"Latitude"`     // 纬度
 	StreamName   string        `xml:"-"`
+	serial       string
 }
 
 type ChannelStatus string
@@ -131,12 +132,15 @@ func (channel *Channel) Invite(opt *InviteOptions, conf config.GB28181Config, st
 	d := channel.device
 	s := "Play"
 
-	//依据deviceId生成ssrc,取设备ID最后六位，然后按顺序生成，一个channel最大999 方便排查问题,也能保证唯一性
+	//然后按顺序生成，一个channel最大999 方便排查问题,也能保证唯一性
 	channel.number++
 	if channel.number > 999 {
 		channel.number = 1
 	}
-	opt.CreateSSRC(channel.ChannelId, channel.number)
+	if len(channel.serial) == 0 {
+		channel.serial = RandNumString(6)
+	}
+	opt.CreateSSRC(channel.serial, channel.number)
 
 	protocol := ""
 	nazalog.Info("networkType:", network)
@@ -174,7 +178,7 @@ func (channel *Channel) Invite(opt *InviteOptions, conf config.GB28181Config, st
 	invite.SetBody(strings.Join(sdpInfo, "\r\n")+"\r\n", true)
 
 	subject := sip.GenericHeader{
-		HeaderName: "Subject", Contents: fmt.Sprintf("%s:%s,%s:0", channel.ChannelId, opt.ssrc, ""),
+		HeaderName: "Subject", Contents: fmt.Sprintf("%s:%s,%s:0", channel.ChannelId, opt.ssrc, conf.Serial),
 	}
 	invite.AppendHeader(&subject)
 	inviteRes, err := d.SipRequestForResponse(invite)
diff --git a/gb28181/inviteoption.go b/gb28181/inviteoption.go
index 317211e..346ae6c 100644
--- a/gb28181/inviteoption.go
+++ b/gb28181/inviteoption.go
@@ -23,7 +23,7 @@ func (o InviteOptions) String() string {
 
 func (o *InviteOptions) CreateSSRC(serial string, number uint16) {
 	//不按gb生成标准,取ID最后六位，然后按顺序生成，一个channel最大999
-	o.ssrc = fmt.Sprintf("%d%s%03d", 0, serial[14:], number)
+	o.ssrc = fmt.Sprintf("%d%s%03d", 0, serial, number)
 	_ssrc, _ := strconv.ParseInt(o.ssrc, 10, 0)
 	o.SSRC = uint32(_ssrc)
 }
diff --git a/gb28181/mediaserver/server.go b/gb28181/mediaserver/server.go
index 2900476..b64ff75 100644
--- a/gb28181/mediaserver/server.go
+++ b/gb28181/mediaserver/server.go
@@ -72,6 +72,8 @@ func (s *GB28181MediaServer) Start() (err error) {
 			}
 
 			c := NewConn(conn, s.lalServer)
+			c.CheckSsrc = s.CheckSsrc
+			c.NotifyClose = s.NotifyClose
 			go c.Serve()
 		}
 
@@ -89,5 +91,8 @@ func (s *GB28181MediaServer) CheckSsrc(ssrc uint32) (string, bool) {
 }
 
 func (s *GB28181MediaServer) NotifyClose(streamName string) {
+	if s.NotifyCloseFunc != nil {
+		s.NotifyCloseFunc(streamName)
+	}
 
 }