No, not really so. Business VoIP Phones are needed for IT companies, including those that are engaged in customer support. But the phones are connected via an IP telephony network, almost through a separate Internet network, so they never fail. VoIP converts a standard telephone signal into a digital stream that can be transmitted over the Internet. Conversely, the incoming digital stream from the Internet is converted into an analog telephone signal. VoIP phone allows you to make calls using VoIP technology to any software, mobile or landline phone. They can use the SIP protocol.