Hi, I have read your project description and I understood all your requirements regarding this task.
I am well versed with all parameters of your project. I want to assure you of top quality delivery.
Let me know if you need my services
Best Regards
You may use opensource goautodial for your dialer and twilio for VOIP carrier. Let me know if how it was setup.
Stay tuned, I'm is still working on this proposal.