diff --git a/.env.example b/.env.example
index 808b224db..563d0f0d5 100644
--- a/.env.example
+++ b/.env.example
@@ -1,8 +1,14 @@
-# Enviroment variables needed to connect to the LiveKit server.
+# Environment variables needed to connect to the LiveKit server.
 LIVEKIT_API_KEY=<your_api_key>
 LIVEKIT_API_SECRET=<your_api_secret>
 LIVEKIT_URL=wss://<project-subdomain>.livekit.cloud
 
+# Optional API endpoint override.
+NEXT_PUBLIC_CONN_DETAILS_ENDPOINT=/api/connection-details
+
+# Frontdesk room input tracks.
+# Backend room input publishes room_video by default.
+NEXT_PUBLIC_FRONTDESK_VIDEO_TRACK_NAME=room_video
 
 # Internally used environment variables
 APP_CONFIG_ENDPOINT=
diff --git a/app-config.ts b/app-config.ts
index 4c89198ea..30242c098 100644
--- a/app-config.ts
+++ b/app-config.ts
@@ -60,8 +60,10 @@ export interface AppConfig {
   showDefaultCameraPreview?: boolean; // 是否默认显示摄像头/视频输入预览
 }
 
+const XUNFEI_AUDIO_TRACK_NAME = 'xunfei_audio_track';
 const ROOM_INPUT_AUDIO_TRACK_NAME = 'room_audio';
-const ROOM_INPUT_VIDEO_TRACK_NAME = 'room_video';
+const ROOM_INPUT_VIDEO_TRACK_NAME =
+  process.env.NEXT_PUBLIC_FRONTDESK_VIDEO_TRACK_NAME || 'room_video';
 const BROWSER_VIDEO_TRACK_NAME = 'browser_video_track';
 export function buildDefaultVideoTracks(
   isBrowserInput: boolean,
@@ -140,7 +142,7 @@ export const APP_CONFIG_DEFAULTS: AppConfig = {
   agentName: undefined,
 
   // 音频过滤配置
-  excludeAudioTracks: [ROOM_INPUT_AUDIO_TRACK_NAME], // 要排除的音频轨道名称列表
+  excludeAudioTracks: [XUNFEI_AUDIO_TRACK_NAME, ROOM_INPUT_AUDIO_TRACK_NAME], // 要排除的音频轨道名称列表
 
   // 调试配置
   showAudioFilterDebug: process.env.NEXT_PUBLIC_SHOW_AUDIO_DEBUG === 'true' || false, // 是否显示音频过滤调试组件
@@ -154,7 +156,7 @@ export const APP_CONFIG_DEFAULTS: AppConfig = {
   enableSmartParticipantMatching: true, // 启用智能参与者匹配，解决自定义音频track的字幕显示问题
   enableTranscriptionDebug: process.env.NEXT_PUBLIC_SHOW_TRANSCRIPTION_DEBUG === 'true' || false, // 转录调试日志
   showTranscriptByDefault: true, // 默认显示字幕；文本输入栏由用户点击 text 按钮后展开
-  userTranscriptionIdentities: ['room_audio_input'], // 用户转录身份标识（自定义音频track）
+  userTranscriptionIdentities: ['xunfei_service_agent', 'room_input', 'room_audio_input'], // 用户转录身份标识（自定义音频track）
   showParticipantNames: false, // 默认不显示参与者名称（user、agent-xxx等）
 
   // 视频轨道配置
diff --git a/hooks/useRoom.ts b/hooks/useRoom.ts
index 4662cca4b..65fc62b79 100644
--- a/hooks/useRoom.ts
+++ b/hooks/useRoom.ts
@@ -8,7 +8,13 @@ import { readConnectionDetailsResponse } from '@/lib/connection-details-response
 
 export function useRoom(appConfig: AppConfig) {
   const aborted = useRef(false);
-  const room = useMemo(() => new Room(), []);
+  const room = useMemo(
+    () =>
+      new Room({
+        reconnectPolicy: { nextRetryDelayInMs: () => null },
+      }),
+    []
+  );
   const [isSessionActive, setIsSessionActive] = useState(false);
   const handleBrowserVideoError = useCallback((error: Error) => {
     toastAlert({
@@ -134,6 +140,7 @@ export function useRoom(appConfig: AppConfig) {
       }
 
       if (appConfig.usesServerRoomInput) {
+        await room.localParticipant.setMicrophoneEnabled(false);
         return;
       }