diff --git a/src/main/java/com/zdjizhi/flink/voip/error/ErrorHandler.java b/src/main/java/com/zdjizhi/flink/voip/error/ErrorHandler.java
index 2f1b767..98bbbe0 100644
--- a/src/main/java/com/zdjizhi/flink/voip/error/ErrorHandler.java
+++ b/src/main/java/com/zdjizhi/flink/voip/error/ErrorHandler.java
@@ -9,7 +9,6 @@ import com.zdjizhi.flink.voip.records.SIPRecord;
 import com.zdjizhi.flink.voip.records.SchemaType;
 import com.zdjizhi.flink.voip.records.StreamDir;
 import com.zdjizhi.utils.IPUtil;
-import org.apache.commons.lang3.StringUtils;
 import org.apache.flink.api.common.typeinfo.TypeInformation;
 import org.apache.flink.configuration.Configuration;
 import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.node.ObjectNode;
@@ -108,8 +107,8 @@ class MeaninglessAddressProcessFunction extends ProcessFunction<ObjectNode, Obje
                                Collector<ObjectNode> out) throws Exception {
         final Record record = new Record(obj);
         // Check for invalid or meaningless addresses and ports
-        boolean cond1 = StringUtils.isNotBlank(record.getClientIp()) &&
-                StringUtils.isNotBlank(record.getServerIp()) &&
+        boolean cond1 = isIPAddress(record.getClientIp()) &&
+                isIPAddress(record.getServerIp()) &&
                 record.getClientPort() > 0 &&
                 record.getServerPort() > 0;
 
@@ -125,8 +124,12 @@ class MeaninglessAddressProcessFunction extends ProcessFunction<ObjectNode, Obje
                 (includeIntranetIp || !isInternalIp(sipRecord.getResponderSdpConnectIp())) &&
                 (includeIntranetIp || !isInternalIp(sipRecord.getOriginatorSdpConnectIp()));
 
+        boolean cond7 = isIPAddress(sipRecord.getOriginatorSdpConnectIp()) &&
+                isIPAddress(sipRecord.getResponderSdpConnectIp()) &&
+                sipRecord.getResponderSdpMediaPort() > 0 && sipRecord.getOriginatorSdpMediaPort() > 0;
+
         // Both client and server addresses in the data are valid.
-        if (cond1 && (
+        if (cond1 && (!cond5 || cond7) && (
                 // The address in the SIP one-way stream is valid and not an internal network address.
                 cond2 && cond3 && cond4 && cond5
                         // The coordinating addresses in the SIP double directional stream are valid
diff --git a/src/main/java/com/zdjizhi/flink/voip/functions/VoIPFusionFunction.java b/src/main/java/com/zdjizhi/flink/voip/functions/VoIPFusionFunction.java
index 19dc44e..a08f86b 100644
--- a/src/main/java/com/zdjizhi/flink/voip/functions/VoIPFusionFunction.java
+++ b/src/main/java/com/zdjizhi/flink/voip/functions/VoIPFusionFunction.java
@@ -83,6 +83,7 @@ public class VoIPFusionFunction extends KeyedCoProcessFunction<Tuple2<Integer, A
             rtpRecord.merge(sipObj)
                     .setString(Record.F_COMMON_SCHEMA_TYPE, SchemaType.VOIP.getValue());
             out.collect(rtpObj);
+            iterator.remove();
 
             switch (entry.getKey()) {
                 case S2C: