diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/session/VideoStreamSessionManager.java b/src/main/java/com/genersoft/iot/vmp/gb28181/session/VideoStreamSessionManager.java
index c69faf96..65e1e5f6 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/session/VideoStreamSessionManager.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/session/VideoStreamSessionManager.java
@@ -15,6 +15,7 @@ import org.springframework.stereotype.Component;
 public class VideoStreamSessionManager {
 
 	private ConcurrentHashMap<String, ClientTransaction> sessionMap = new ConcurrentHashMap<>();
+	private ConcurrentHashMap<String, String> ssrcMap = new ConcurrentHashMap<>();
 
 	public String createPlaySsrc(){
 		return SsrcUtil.getPlaySsrc();
@@ -24,16 +25,18 @@ public class VideoStreamSessionManager {
 		return SsrcUtil.getPlayBackSsrc();
 	}
 	
-	public void put(String ssrc,ClientTransaction transaction){
-		sessionMap.put(ssrc, transaction);
+	public void put(String streamId,String ssrc,ClientTransaction transaction){
+		sessionMap.put(streamId, transaction);
+		ssrcMap.put(streamId, ssrc);
 	}
 	
-	public ClientTransaction get(String ssrc){
-		return sessionMap.get(ssrc);
+	public ClientTransaction get(String streamId){
+		return sessionMap.get(streamId);
 	}
 	
-	public void remove(String ssrc) {
-		sessionMap.remove(ssrc);
-		SsrcUtil.releaseSsrc(ssrc);
+	public void remove(String streamId) {
+		sessionMap.remove(streamId);
+		SsrcUtil.releaseSsrc(ssrcMap.get(streamId));
+		ssrcMap.remove(streamId);
 	}
 }
diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java
index 912189c9..a9ace7be 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java
@@ -235,7 +235,7 @@ public class SIPCommander implements ISIPCommander {
 			ptzXml.append("</Control>\r\n");
 			
 			String tm = Long.toString(System.currentTimeMillis());
-			Request request = headerProvider.createMessageRequest(device, ptzXml.toString(), "ViaPtzBranch", "FromPtz" + tm, null);
+			Request request = headerProvider.createMessageRequest(device, ptzXml.toString(), "z9hG4bK-ViaPtz-" + tm, "FromPtz" + tm, null);
 			
 			transmitRequest(device, request);
 			return true;
@@ -272,7 +272,7 @@ public class SIPCommander implements ISIPCommander {
 			ptzXml.append("</Control>\r\n");
 			
 			String tm = Long.toString(System.currentTimeMillis());
-			Request request = headerProvider.createMessageRequest(device, ptzXml.toString(), "ViaPtzBranch", "FromPtz" + tm, null);
+			Request request = headerProvider.createMessageRequest(device, ptzXml.toString(), "z9hG4bK-ViaPtz-" + tm, "FromPtz" + tm, null);
 			transmitRequest(device, request);
 			return true;
 		} catch (SipException | ParseException | InvalidArgumentException e) {
@@ -387,9 +387,7 @@ public class SIPCommander implements ISIPCommander {
 			Request request = headerProvider.createInviteRequest(device, channelId, content.toString(), null, "FromInvt" + tm, null, ssrc);
 
 			ClientTransaction transaction = transmitRequest(device, request, errorEvent);
-			streamSession.put(streamId, transaction);
-
-
+			streamSession.put(streamId,ssrc, transaction);
 
 		} catch ( SipException | ParseException | InvalidArgumentException e) {
 			e.printStackTrace();
@@ -487,7 +485,7 @@ public class SIPCommander implements ISIPCommander {
 	        Request request = headerProvider.createPlaybackInviteRequest(device, channelId, content.toString(), null, "fromplybck" + tm, null);
 
 	        ClientTransaction transaction = transmitRequest(device, request, errorEvent);
-	        streamSession.put(streamId, transaction);
+	        streamSession.put(streamId, ssrc, transaction);
 
 		} catch ( SipException | ParseException | InvalidArgumentException e) {
 			e.printStackTrace();
@@ -893,7 +891,7 @@ public class SIPCommander implements ISIPCommander {
 			catalogXml.append("</Query>\r\n");
 			
 			String tm = Long.toString(System.currentTimeMillis());
-			Request request = headerProvider.createMessageRequest(device, catalogXml.toString(), "z9hG4bK-ViaDeviceInfo" + tm, "FromDev" + tm, null);
+			Request request = headerProvider.createMessageRequest(device, catalogXml.toString(), "z9hG4bK-ViaDeviceInfo-" + tm, "FromDev" + tm, null);
 
 			transmitRequest(device, request);
 			
@@ -923,7 +921,7 @@ public class SIPCommander implements ISIPCommander {
 			catalogXml.append("</Query>\r\n");
 			
 			String tm = Long.toString(System.currentTimeMillis());
-			Request request = headerProvider.createMessageRequest(device, catalogXml.toString(), "z9hG4bK-ViaCatalog" + tm, "FromCat" + tm, null);
+			Request request = headerProvider.createMessageRequest(device, catalogXml.toString(), "z9hG4bK-ViaCatalog-" + tm, "FromCat" + tm, null);
 
 			transmitRequest(device, request, errorEvent);
 		} catch (SipException | ParseException | InvalidArgumentException e) {
@@ -958,7 +956,7 @@ public class SIPCommander implements ISIPCommander {
 			recordInfoXml.append("</Query>\r\n");
 			
 			String tm = Long.toString(System.currentTimeMillis());
-			Request request = headerProvider.createMessageRequest(device, recordInfoXml.toString(), "ViaRecordInfoBranch", "fromRec" + tm, null);
+			Request request = headerProvider.createMessageRequest(device, recordInfoXml.toString(), "z9hG4bK-ViaRecordInfo-" + tm, "fromRec" + tm, null);
 
 			transmitRequest(device, request);
 		} catch (SipException | ParseException | InvalidArgumentException e) {
@@ -1101,7 +1099,7 @@ public class SIPCommander implements ISIPCommander {
 			mobilePostitionXml.append("</Query>\r\n");
 			
 			String tm = Long.toString(System.currentTimeMillis());
-			Request request = headerProvider.createMessageRequest(device, mobilePostitionXml.toString(), "viaTagPos" + tm, "fromTagPos" + tm, null);
+			Request request = headerProvider.createMessageRequest(device, mobilePostitionXml.toString(), "z9hG4bK-viaPos-" + tm, "fromTagPos" + tm, null);
 
 			transmitRequest(device, request, errorEvent);
 			
@@ -1134,7 +1132,7 @@ public class SIPCommander implements ISIPCommander {
 			subscribePostitionXml.append("</Query>\r\n");
 
 			String tm = Long.toString(System.currentTimeMillis());
-			Request request = headerProvider.createSubscribeRequest(device, subscribePostitionXml.toString(), "viaTagPos" + tm, "fromTagPos" + tm, null, expires, "presence" ); //Position;id=" + tm.substring(tm.length() - 4));
+			Request request = headerProvider.createSubscribeRequest(device, subscribePostitionXml.toString(), "z9hG4bK-viaPos-" + tm, "fromTagPos" + tm, null, expires, "presence" ); //Position;id=" + tm.substring(tm.length() - 4));
 			transmitRequest(device, request);
 
 			return true;
@@ -1187,7 +1185,7 @@ public class SIPCommander implements ISIPCommander {
 			cmdXml.append("</Query>\r\n");
 
 			String tm = Long.toString(System.currentTimeMillis());
-			Request request = headerProvider.createSubscribeRequest(device, cmdXml.toString(), "viaTagPos" + tm, "fromTagPos" + tm, null, expires, "presence" ); 
+			Request request = headerProvider.createSubscribeRequest(device, cmdXml.toString(), "z9hG4bK-viaPos-" + tm, "fromTagPos" + tm, null, expires, "presence" ); 
 			transmitRequest(device, request);
 
 			return true;