Record

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.

ATTRIBUTE	DESCRIPTION	OPTIONS	DEFAULT
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, POST	POST
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 - 14400	3600
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, dual	dual
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, POST	POST
transcription	Enables automatic transcription of the recorded audio. When set to 'true', a transcription will be generated and delivered to the transcriptionCallback URL.	true, false	false
transcriptionCallback	The URL where Telnyx will send the transcription result once available.		-
transcriptionEngine	Specifies the engine to use for transcription.	A, B	A

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>

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?"
}

ATTRIBUTE	DESCRIPTION
AccountSid	A unique identifier for the account generating this call.
CallSid	A unique identifier for this call, generated by Telnyx.
CallSidLegacy	A unique identifier for the call sent for keeping backward compatibility.
From	The outbound caller number.
To	The inbound callee number.
CallStatus	The value is one of in-progress or completed
RecordingSid	A unique identifier for the recording, generated by Telnyx.
RecordingUrl	A Url to download the recording. It is active for 10 minutes after the recording is stored
TranscriptionStatus	A status of the transcription. Always completed
TranscriptionSid	A unique identifier for the transcription, generated by Telnyx
TranscriptionText	A recording transcription