Merge branch 'master' into zz12356

midware-service/src/main/java/midware/service/eslclient/EslEventListenerEvent.java

                             if (EslCommon.channels.stream().noneMatch(p -> p.getSessionId().equals(sid))) {
                                 EslCommon.sessions.remove(session);
                             }
-                            //会议剩下最后一个时挂机
-                            if (session.isMeeting()) {
+                            //未接通或会议剩下最后一个时挂机
+                            if (!session.isAnswer()&&session.isMeeting()) {
                                 if (EslCommon.channels.stream().filter(p -> p.getSessionId().equals(sid)).count() == 1) {
                                     Channel last = EslCommon.channels.stream().filter(p -> p.getSessionId().equals(sid)).findFirst().get();
                                     eslClientService.kill(last.getChanId(), "");