For one time advertising promotions or typical requests it is easier to use services of the outsourced call center. Main advantage of such a service is that the company who rents it is free from the necessity of keeping the operators and organizing their work flow.
MySipProvider is an Italian SIP traffic provider. We provide Wholesale A-Z with CLI. Our main target is business customer. Our company running since 2010 with 300 customers and 80 vendors.