So a bit more detail on the problem. I'm using LiveKit, and it looks like the SDK configures some parts of the audio session. Currently the bluetooth accessories work like a audio call (mute/unmute) rather than like a PPT channel (I would expect transmit/stop transmitting). Here is the default configuration the Livekit SDK does https://github.com/livekit/client-sdk-swift/blob/1f5959f787805a4b364f228ccfb413c1c4944748/Sources/LiveKit/Track/AudioManager.swift#L153 DispatchQueue.webRTC.async { [weak self] in guard let self = self else { return } // prepare config let configuration = RTCAudioSessionConfiguration.webRTC() var categoryOptions: AVAudioSession.CategoryOptions = [] if newState.trackState == .remoteOnly && newState.preferSpeakerOutput { configuration.category = AVAudioSession.Category.playback.rawValue configuration.mode = AVAudioSession.Mode.spokenAudio.rawValue } else if [.localOnly, .localAndRemote].contains(newState.trackState) || (newState.trackState == .remoteOnly && !newState.preferSpeakerOutput) { configuration.category = AVAudioSession.Category.playAndRecord.rawValue if newState.preferSpeakerOutput { // use .videoChat if speakerOutput is preferred configuration.mode = AVAudioSession.Mode.videoChat.rawValue } else { // use .voiceChat if speakerOutput is not preferred configuration.mode = AVAudioSession.Mode.voiceChat.rawValue } categoryOptions = [.allowBluetooth, .allowBluetoothA2DP] } else { configuration.category = AVAudioSession.Category.soloAmbient.rawValue configuration.mode = AVAudioSession.Mode.default.rawValue } configuration.categoryOptions = categoryOptions var setActive: Bool? if newState.trackState != .none, oldState.trackState == .none { // activate audio session when there is any local/remote audio track setActive = true } else if newState.trackState == .none, oldState.trackState != .none { // deactivate audio session when there are no more local/remote audio tracks setActive = false } // configure session let session = RTCAudioSession.sharedInstance() session.lockForConfiguration() // always unlock defer { session.unlockForConfiguration() } do { self.log("configuring audio session category: \(configuration.category), mode: \(configuration.mode), setActive: \(String(describing: setActive))") if let setActive = setActive { try session.setConfiguration(configuration, active: setActive) } else { try session.setConfiguration(configuration) } } catch let error { self.log("Failed to configure audio session with error: \(error)", .error) } } } #endif } Its possible to override, but there is no enum element for pushToTalk. Can I get any help? This has been very hard to get to a working example of what's claimed in the documentation: "accessory button events map to begin and end transmission actions" https://developer.apple.com/documentation/pushtotalk/ptchannelmanager/setaccessorybuttoneventsenabled%28_:channeluuid:completionhandler:%29?language=objc Thank you

I am having this same issue. I see in the docs it says setAccessoryButtonEventsEnabled should be enabled by default. However when on a PTT channel, neither AirPods nor a bluetooth speaker response when using the play/pause actions. I can't find any example, and in the tutorials it says just enabled CoreBluetooth, but I've done that. Do you have any guidance on how to have the expected behaviour of triggering mute/unmute based on bluetooth device actions?