# Supported actions for the Amazon Chime SDK PSTN audio service
<a name="specify-actions"></a>

You can specify different types of signaling and media actions in a response from an AWS Lambda function. Each action has different properties. The following topics provide example code and explain how to use the actions.

**Topics**
+ [Using TransactionAttributes](transaction-attributes.md)
+ [Using call recording](sip-apps-call-record.md)
+ [CallAndBridge](call-and-bridge.md)
+ [Hangup](hangup.md)
+ [JoinChimeMeeting](join-chime-meeting.md)
+ [ModifyChimeMeetingAttendee (muting and unmuting audio)](mute-unmute.md)
+ [Pause](pause.md)
+ [PlayAudio](play-audio.md)
+ [PlayAudioAndGetDigits](play-audio-get-digits.md)
+ [ReceiveDigits](listen-to-digits.md)
+ [RecordAudio](record-audio.md)
+ [SendDigits](send-digits.md)
+ [Speak](speak.md)
+ [SpeakAndGetDigits](speak-and-get-digits.md)
+ [StartBotConversation](start-bot-conversation.md)