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The <Record> verb creates an audio file with the call audio. If a recordingStatusCallback, Telnyx will deliver the URL for the recording to that address once the call has ended. Recording URLs are valid for 10 minutes after the call has ended. All recordings are also available via the Telnyx Mission Control Portal Note In addition to recording, the <Record> verb supports automatic transcription by setting transcription="true" and providing a transcriptionCallback URL. The transcription result will be sent via webhook.

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Attributes

ATTRIBUTEDESCRIPTIONOPTIONSDEFAULT
action Optional URL where TeXML will make a request when the <Record> ends to retrieve a new set of TeXML instructions to continue the call flow sent with additional request parameters. -
method HTTP request type used to retrieve the next set of instructions. GET, POSTPOST
finishOnKey Set of digits specified together, any one of which will end the recording. Supported characters values: Any digit, #, *. 1234567890*#
timeout The number of seconds that Telnyx will wait for the recording to be stopped if silence is detected. The timer only starts when the speech is detected. Please note that the transcription is used to detect silence and the related charge will be applied. 0 for infinite. 0
maxLength Defines the maximum length for the recording in seconds. 0 for infinite. 0 - 144003600
playBeep Whether or not a sound is played before the start of a recording. true
trim Will remove silence from the beginning and end of the recording when set to trim-silence. trim-silence-
channels When using dual channels, the final audio file will be stereo recorded with the first leg on channel A, and the rest on channel B. single, dualdual
recordingStatusCallback Optional URL that tells Telnyx where to make its GET or POST request when the recording is available. -
recordingStatusCallbackMethod HTTP request type used for recordingStatusCallback. GET, POSTPOST
transcription Enables automatic transcription of the recorded audio. When set to ‘true’, a transcription will be generated and delivered to the transcriptionCallback URL. true, falsefalse
transcriptionCallback The URL where Telnyx will send the transcription result once available. -
transcriptionEngine Specifies the engine to use for transcription. A, BA

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Examples

Example 1 
<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Record action="https://example.com/recording-complete" 
            maxLength="30" 
            playBeep="true"/>
</Response>
Example 2 
<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Say voice="Telnyx.KokoroTTS.af">This call will be recorded and transcribed for quality purposes.</Say>
  <Record 
    action="https://example.com/recording-complete" 
    method="POST"
    maxLength="60"
    timeout="5"
    transcription="true"
    transcriptionEngine="A"
    transcriptionCallback="https://example.com/transcription-result" />
</Response>

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Expected callbacks

If the statusCallback or the action is set, the following callbacks are sent: completed and action callback 
{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallSidLegacy": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "ConnectionId": "1684641123236054244",
   "RecordingStatus" : "completed",
   "RecordingDuration" : 100,
   "RecordingChannels" : 2,
   "RecordingSid" : "efgcfbbc-eb00-41af-a3f3-0d7b32009e4",
   "RecordingUrl" : ""
}
in-progress 
{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallSidLegacy": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "ConnectionId": "1684641123236054244",
   "RecordingStatus": "in-progress"
}
transcription 
{
   "AccountSid": "cb6cfbbc-eb00-41af-a3f3-0d7b32009e4b",
   "CallSid": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "CallSidLegacy": "v2:7V3r4VFCGLTzKLOveE0-7vM9dX17-NRQgU1byo-uuOIX9JcDadLLKw",
   "From": "Defaultj35z6@sip.telnyx.com",
   "To": "+12132045020",
   "CallStatus": "completed",
   "RecordingSid": "efgcfbbc-eb00-41af-a3f3-0d7b32009e4",
   "RecordingUrl": "https://s3.amazonaws.com/telephony-recorder-prod/7cb68c48-01e3-4a97-b3a6-00123594cacd/2025-01-24/47f68070-212c-11f0-9b33-02420aefa0a1-1745513472315123.mp3?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=xxx&X-Amz-Date=20250424T165511Z&X-Amz-Expires=600&X-Amz-SignedHeaders=host&X-Amz-Signature=7a13ade4cd1e1531bbcff38e46480b44e8ffc04136154d510887hjdskkjsahd44",
   "TranscriptionStatus": "completed",
   "TranscriptionSid": "hykcfbbc-eb00-41af-a3f3-0d7b32009e4",
   "TranscriptionText": "Hi, how are you?"
}

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Status callback attributes

ATTRIBUTEDESCRIPTION
AccountSidA unique identifier for the account generating this call.
CallSidA unique identifier for this call, generated by Telnyx.
CallSidLegacyA unique identifier for the call sent for keeping backward compatibility.
FromThe outbound caller number.
ToThe inbound callee number.
CallStatusThe value is one of in-progress or completed
RecordingSidA unique identifier for the recording, generated by Telnyx.
RecordingUrlA Url to download the recording. It is active for 10 minutes after the recording is stored
TranscriptionStatusA status of the transcription. Always completed
TranscriptionSidA unique identifier for the transcription, generated by Telnyx
TranscriptionTextA recording transcription