Automated Twilio to Bandwidth Compatibility Check

This is exactly what the Compatibility Check is designed to tell you up front: what moves easily and what would break if you switched today. Bandwidth’s Compatibility Check maps your existing voice application code to BXML line by line, flagging exactly what’s ready to go, what needs a quick review, and what requires an alternative approach before you touch your production environment.

No, and your carrier can’t legally refuse to port them. The FCC requires all carriers to release numbers on request. With Bandwidth, standard ports complete in 3–7 business days, you can port up to 20,000 numbers at once from an unlimited number of losing carriers, and parallel SIP trunks mean traffic redirects instantly on the Firm Order Commitment date. Our customers have described how painless the process can be.

For instance, CallRail ported 150,000 numbers during their transition to Bandwidth. CTO and co-founder, Elliot Wood said: “I was prepared for all kinds of pain in the porting process. And then one of my product managers came to me one day and said, it’s done. And I hadn’t realized that had happened because we didn’t have any customer complaints, which was shocking.”

It depends on how much guesswork the process requires. Most delays happen during compatibility discovery. Dev teams can spend days manually comparing code bases. The Compatibility Check runs that comparison for you–so your team can get straight to evaluating the results. You get a complete mapping in seconds, so you start with a clear estimate of the work ahead.

Typically yes for scaling companies. Because Bandwidth cuts out the reseller layer entirely, when you build on a network you own, you’re not paying more to upstream carriers. We also bill voice in 6-second increments compared to Twilio’s 60-second billing. This saves you at scale for short AI calls that may end under 1 minute or end in 1-59 second marks.

For SMS, brands of all sizes use Bandwidth’s messaging products (RCS, toll-free, short codes, 10DLC), from Heymarket to Attentive.

See our Voice API pricing and cost predictor
See our messaging pricing and cost calculator

Absolutely. Bandwidth is a licensed carrier (CLEC) in the US. CLEC status means our CPaaS owns the connection into the telephone network (PSTN connectivity) itself, which is what you need for reliable, ultra low-latency voice in production. Bandwidth does not aggregate the voice network powering our Voice API.