diff --git a/channels/h323/ast_h323.cpp b/channels/h323/ast_h323.cpp
index 2a0f14492246a2271d7f8740c3d56739a11b7ea1..44e8163503dc6cf25140929ff7db4c1c8254599a 100755
--- a/channels/h323/ast_h323.cpp
+++ b/channels/h323/ast_h323.cpp
@@ -673,6 +673,10 @@ H323Channel * MyH323Connection::CreateRealTimeLogicalChannel(const H323Capabilit
 	/* Determine the Local (A side) IP Address and port */
 	info = on_create_connection(GetCallReference()); 
 
+	if (!info) {
+		return NULL;
+	}
+
         GetControlChannel().GetLocalAddress().GetIpAndPort(externalIpAddress, port);
 	externalPort = info->port;