Regular monthly price is .99 for Pro, .99 for Pro Plus and .99 for Office Standard (if paid on monthly basis).
To make other non-Twilio phone numbers available to you in trial mode: You will need a Twilio-enabled phone number (a phone number purchased through Twilio) to send messages or make phone calls using Twilio.
Note: we only allow 1 Twilio number per trial project.
If you select a number or choose your own and decide that you’d like a different phone number, you must first release your current number, then pick a new number from the Buy a Number page.
You can fully configure this SIP Trunk for testing and to place actual calls to and from your business, keeping these restrictions in mind: SIP Trunking on trial accounts has a maximum of: If your Twilio needs expand or you need to accomplish something that isn’t available to your trial account, you’ll need to upgrade your trial account to a full paid account.
All you need to do to upgrade is provide your payment information via credit card or Paypal on the billing page.