We sell and support a small range of telephony products and they're all backed by Twilio.
Using them as the SIP trunks, SMS channels, etc is not only easy, but highly reliable and cost-effective.
The reason you don't see more dealers taking that approach is because the in-store component is tough - dealers still want a phone on their desk, BDC functionality, phone activity on a TV in their office, etc. These things are all possible with Twilio, but require dev work or a heavy customization of the Flex system. Alot of what we do now is an open source phone server running in the dealership - all the SIP trunks from Twilio go into the server and then the server goes into a switch, which powers all the phones in the dealership over PoE. Everyone still gets a phone on their desk, a paging system, voicemail emailed to their inbox, but the backbone is all Twilio services.
There are only a couple areas where we don't pay Twilio:
- Call recording - it's cheaper to record on the server than pay them to record and transfer
- Voice intelligence - again, with our own recordings on linux boxes we don't need to pay them to process calls