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 01c916312..8d70f2ff0 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
@@ -367,7 +367,7 @@ public class SIPCommander implements ISIPCommander {
         CallIdHeader callIdHeader = device.getTransport().equalsIgnoreCase("TCP") ? tcpSipProvider.getNewCallId()
                 : udpSipProvider.getNewCallId();
 
-        Request request = headerProvider.createInviteRequest(device, channelId, content.toString(), null, SipUtils.getNewFromTag(), null, ssrcInfo.getSsrc(), callIdHeader);
+        Request request = headerProvider.createInviteRequest(device, channelId, content.toString(), SipUtils.getNewViaTag(), SipUtils.getNewFromTag(), null, ssrcInfo.getSsrc(), callIdHeader);
         transmitRequest(device.getTransport(), request, (e -> {
             streamSession.remove(device.getDeviceId(), channelId, ssrcInfo.getStream());
             mediaServerService.releaseSsrc(mediaServerItem.getId(), ssrcInfo.getSsrc());
diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/AckRequestProcessor.java b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/AckRequestProcessor.java
index dd5fc8e0d..9bc10a6e0 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/AckRequestProcessor.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/AckRequestProcessor.java
@@ -107,6 +107,10 @@ public class AckRequestProcessor extends SIPRequestProcessorParent implements In
 		dynamicTask.stop(callIdHeader.getCallId());
 		String channelId = ((SipURI) ((HeaderAddress) evt.getRequest().getHeader(ToHeader.NAME)).getAddress().getURI()).getUser();
 		SendRtpItem sendRtpItem =  redisCatchStorage.querySendRTPServer(platformGbId, channelId, null, callIdHeader.getCallId());
+		if (sendRtpItem == null) {
+			logger.warn("[收到ACK]：未找到通道({})的推流信息", channelId);
+			return;
+		}
 		String is_Udp = sendRtpItem.isTcp() ? "0" : "1";
 		MediaServerItem mediaInfo = mediaServerService.getOne(sendRtpItem.getMediaServerId());
 		logger.info("收到ACK，rtp/{}开始向上级推流, 目标={}:{}，SSRC={}", sendRtpItem.getStreamId(), sendRtpItem.getIp(), sendRtpItem.getPort(), sendRtpItem.getSsrc());