Voice call service providers, also known as Voice over Internet Protocol (VoIP) providers, are companies that offer voice communication services using the internet. They enable users to make voice calls, both domestically and internationally, at cost-effective rates compared to traditional telephone services.

Voice call service providers, also known as Voice over Internet Protocol (VoIP) providers, are companies that offer voice communication services using the internet. They enable users to make voice calls, both domestically and internationally, at cost-effective rates compared to traditional telephone services.