diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderProvider.java b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderProvider.java
index d4321d96..6982144f 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderProvider.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderProvider.java
@@ -214,7 +214,7 @@ public class SIPRequestHeaderProvider {
 				.createSipURI(platform.getDeviceGBId(), sipAddress));
 		request.addHeader(sipFactory.createHeaderFactory().createContactHeader(concatAddress));
 
-		ExpiresHeader expires = sipFactory.createHeaderFactory().createExpiresHeader(3600);
+		ExpiresHeader expires = sipFactory.createHeaderFactory().createExpiresHeader(Integer.parseInt(platform.getExpires()));
 		request.addHeader(expires);
 
 		return request;