SIP
Four Reasons Your Business Should Use XMission SIP Trunking
Believe it or not, industry projections show that by 2015 there will be more SIP-powered phones than traditional phone services in American businesses. In 2005, less than 10% of American businesses used VoIP- or SIP-related services for their office phone systems. In 2013, that number is 38% and is compounding every year. AT&T, the largest […]