Showing results for 
Search instead for 
Did you mean: 

Yes, you can use pre-recorded audio in multiple formats, including WAV and MP3.


Pre-recorded messages can be used on a IVR scenario, when you want to play messages in a menu scenario instead of using TTS, and it can also be used on a callout scenario, when the customer want to trigger a call to a destination number, and play a message directly, such as a PIN code for a OTP (On Time Password) call.


Further Resources:

  • External media support – Content caching, limits, supported Content-Type headers.
  • Text-to-speech Callout - Server initiates a call to a phone number and plays a synthesized text messages or pre-recorded sound files. 
  • Playfiles - Plays Interactive Voice Response (IVR) files for the supported locale at the Sinch backend. An IVR message is played only on the caller’s side.
Was this article helpful? Yes No
No ratings
Version history
Last update:
‎05-28-2021 04:16 AM
Updated by: