Who is SIP Calling For?According to Nemertes’ recent Workplace Collaboration: 2019-20 Research Study, 18% of the 645 participating companies are currently using SIP trunking, while 34% are planning to adopt it within the upcoming two years. North America excels by converting 58% of PSTN trunks into SIP.SIP calling is perfect for:Large Companies: If you are company with greater than 2,500 employees, SIP calling is a must when you consider the big expenses you incur from a traditional phone system. SIP saves you money on your communication costs...