This process on Customer Engines side only takes 4 business days for porting. Depending on if you provide Twilio with all the information they require it can take anywhere from 24-48 hours for them to respond. If you do not provide all the information they need or we need the process will take longer. 

Toll Free Numbers can take 3-4 weeks to port over from Twilio. Please make sure that when you port your Toll Free Numbers over that your Letter of Authorization has each toll free number as well as their SID.