Anyone see anything about how they handle simultaneous incoming faxes to the same number? With other faxing APIs we've used, if we get a new inbound fax while another is being received, the second (new) inbound fax will get a busy signal and not get procewsed.
Phaxio has said they can handle any number of simultaneous inbound faxes, but we haven't had a chance to try them yet. It would be nice to know if Twilio is an option.