How long are recordings retained and available through the API?

I know this post is quite old but I came across the exact same problem of the recordings getting deleted after a short while and there is very little out there on how to solve this problem of retaining the recordings. I hope this helps someone. The way I solved it was I wrote some custom code to read the binary stream of each recording file and save each recording MP3 file locally to our network hard drive on our company network as well as all information relating to each file stored in our database. That way we have access to all recordings for as long as we like. This is important because we needed all the recordings accessible in our custom CRM/ERP order processing application which I have also written. Our requirement was the ability to go into any company record in our CRM and be able to play any recordings relating to that company.