diff --git a/client-js/client/client.ts b/client-js/client/client.ts
index 3d04b06..f8537a6 100644
--- a/client-js/client/client.ts
+++ b/client-js/client/client.ts
@@ -15,6 +15,7 @@ import {
   BotReadyData,
   BotTTSTextData,
   ClientMessageData,
+  DeviceState,
   ErrorData,
   LLMContextMessage,
   LLMFunctionCallData,
@@ -61,6 +62,7 @@ export type RTVIEventCallbacks = Partial<{
   onDisconnected: () => void;
   onError: (message: RTVIMessage) => void;
   onTransportStateChanged: (state: TransportState) => void;
+  onDeviceStateChanged: (state: DeviceState) => void;
 
   onBotConnected: (participant: Participant) => void;
   onBotReady: (botReadyData: BotReadyData) => void;
@@ -199,6 +201,10 @@ export class PipecatClient extends RTVIEventEmitter {
         options?.callbacks?.onTransportStateChanged?.(state);
         this.emit(RTVIEvent.TransportStateChanged, state);
       },
+      onDeviceStateChanged: (state: DeviceState) => {
+        options?.callbacks?.onDeviceStateChanged?.(state);
+        this.emit(RTVIEvent.DeviceStateChanged, state);
+      },
       onParticipantJoined: (p) => {
         options?.callbacks?.onParticipantJoined?.(p);
         this.emit(RTVIEvent.ParticipantConnected, p);
@@ -484,6 +490,10 @@ export class PipecatClient extends RTVIEventEmitter {
     return this._transport.state;
   }
 
+  public get deviceState(): DeviceState {
+    return this._transport.deviceState;
+  }
+
   public get version(): string {
     return packageJson.version;
   }
diff --git a/client-js/client/transport.ts b/client-js/client/transport.ts
index 5f0ecb9..1d52c65 100644
--- a/client-js/client/transport.ts
+++ b/client-js/client/transport.ts
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-import { RTVIError, RTVIMessage, TransportState } from "../rtvi";
+import { DeviceState, RTVIError, RTVIMessage, TransportState } from "../rtvi";
 import { PipecatClientOptions, RTVIEventCallbacks } from "./client";
 
 export type Tracks = {
@@ -30,6 +30,7 @@ export abstract class Transport {
   protected declare _callbacks: RTVIEventCallbacks;
   protected declare _abortController: AbortController | undefined;
   protected _state: TransportState = "disconnected";
+  protected _deviceState: DeviceState = "not_ready";
 
   constructor() {}
 
@@ -86,6 +87,9 @@ export abstract class Transport {
   abstract get state(): TransportState;
   abstract set state(state: TransportState);
 
+  abstract get deviceState(): DeviceState;
+  abstract set deviceState(state: DeviceState);
+
   abstract getAllMics(): Promise<MediaDeviceInfo[]>;
   abstract getAllCams(): Promise<MediaDeviceInfo[]>;
   abstract getAllSpeakers(): Promise<MediaDeviceInfo[]>;
diff --git a/client-js/rtvi/common_types.ts b/client-js/rtvi/common_types.ts
index 52fe36c..b0717f6 100644
--- a/client-js/rtvi/common_types.ts
+++ b/client-js/rtvi/common_types.ts
@@ -1,7 +1,5 @@
 export type TransportState =
   | "disconnected"
-  | "initializing"
-  | "initialized"
   | "authenticating"
   | "authenticated"
   | "connecting"
@@ -12,8 +10,6 @@ export type TransportState =
 
 export enum TransportStateEnum {
   DISCONNECTED = "disconnected",
-  INITIALIZING = "initializing",
-  INITIALIZED = "initialized",
   AUTHENTICATING = "authenticating",
   AUTHENTICATED = "authenticated",
   CONNECTING = "connecting",
@@ -23,6 +19,15 @@ export enum TransportStateEnum {
   ERROR = "error",
 }
 
+export type DeviceState = "not_ready" | "initializing" | "ready" | "blocked";
+
+export enum DeviceStateEnum {
+  NOT_READY = "not_ready",
+  INITIALIZING = "initializing",
+  READY = "ready",
+  BLOCKED = "blocked",
+}
+
 export type Participant = {
   id: string;
   name: string;
diff --git a/client-js/rtvi/events.ts b/client-js/rtvi/events.ts
index 1117e21..a890b0c 100644
--- a/client-js/rtvi/events.ts
+++ b/client-js/rtvi/events.ts
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-import { Participant, TransportState } from "./common_types";
+import { DeviceState, Participant, TransportState } from "./common_types";
 import { DeviceError } from "./errors";
 import {
   BotLLMSearchResponseData,
@@ -22,6 +22,7 @@ export enum RTVIEvent {
   Connected = "connected",
   Disconnected = "disconnected",
   TransportStateChanged = "transportStateChanged",
+  DeviceStateChanged = "deviceStateChanged",
 
   /** remote connection state events */
   BotConnected = "botConnected",
@@ -90,6 +91,7 @@ export type RTVIEvents = Partial<{
   connected: () => void;
   disconnected: () => void;
   transportStateChanged: (state: TransportState) => void;
+  deviceStateChanged: (state: DeviceState) => void;
 
   /** remote connection state events */
   botConnected: (participant: Participant) => void;