An organization that provides voice over IP (VoIP) service and enables calling from SIP phones to plain-old-telephone (POTS) lines and vice versa. SIP is the universal protocol used for Internet ...

I’ve looked into just about every business phone system on the market. Along the way, I uncovered the best SIP trunk providers based on pricing, setup, customer service, features and integrations.

One such advancement is SIP trunking, a method that uses the internet to make phone calls instead of traditional phone lines. What Are SIP Trunks and Traditional Phone Systems? Traditional phone ...