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.
Nuvio is the smart choice for internet service providers who wish to offer VoIP services. Nuvio has spent the time and resources building out a nationwide VoIP network so you don`t have to.