We need FreePBX or any powerful PBX phone system what is very stable and can handling minimum 50 million phone numbers in the database
Need an outbound broadcast dialing who dial all the uploaded phone numbers and JUST RING 1 time ONLY those phone number to analyses if the number exist or not.
Must be absolutely NO CHARGE making by each call and write back into database FAIL / exist number!
The sip trunk have be minimum 250 channels that the dialer can call per second 250 numbers.
50 freelancers are bidding on average $1170 for this job
Native Android | Java | Android Sdk | Ionic | PHP | [url removed, login to view] | Node.js | MongoDB | MySQL | iOS | Swift3 | XCode These are my best strong skills. After reading over your application, I wanna know full detail of the Daha fazlası