修改

midware-service/src/main/java/midware/service/init/WebSocketService.java

                 case "HoldOn"://开启保持
                     //通话中  可以开启保持
                     if (Objects.equals(state, EslAgentEnum.talking)) {
-                        isExec = eslClientService.setHold(chan.getSessionId(), true,type + "|" + agentId);
+                        isExec = eslClientService.setHold(chan.getChanId(), true,type + "|" + agentId);
                     }
                     break;
                 case "HoldOff"://关闭保持
                     //通话中  可以关闭保持
                     if (Objects.equals(state, EslAgentEnum.talking)) {
-                        isExec = eslClientService.setHold(chan.getSessionId(), false,type + "|" + agentId);
+                        isExec = eslClientService.setHold(chan.getChanId(), false,type + "|" + agentId);
                     }
                     break;
                 case "MuteOn"://开启静音