A little more exotic, but useful for use cases like [OFM zone activation](https://gitlab.com/openflightmaps/amelia-bot/-/wikis/DPR%20Zone%20Activation). Provider shortlist to be evaluated: * [Twilio Programmable Voice](https://www.twilio.com/en-us/voice) (US) * [Sinch Voice Calling](https://www.sinch.com/products/voice/voice-calling/) (SE) * [RingCentral Programmable Voice](https://developers.ringcentral.com/voice-api) (US) * [TELNYX Programmable Voice](https://telnyx.com/products/voice-api) (US) * (...)
A little more exotic, but useful for use cases like OFM zone activation.
Provider shortlist to be evaluated: