I recently used fastcall for the same purpose: https://appexchange.salesforce.com/listingDetail?listingId=a0N30000009xN9oEAE It will require creating a trello voice account and a cost of 10$ to make calls, but the setup was fairly easy. I had an issue with the pacakge but the developer was available on the day to provide a fix
It will require creating a trello voice account and a cost of 10$ to make calls, but the setup was fairly easy. I had an issue with the pacakge but the developer was available on the day to provide a fix