Who to contact to provide communication services when implementing callbackhunter?

Question

Telephony

I would like to make my own callbackhunter with blackjack and schooners. It seems that from a technical point of view, the service is quite simple. It seems that there should be some telephone services capable of creating a telephone connection in the callback format via api.
Can you advise who to contact?

Answer 1

I have a semi-working service, washed it down 2 years ago, but it didn’t get to the launch. I sell.
callider.ru