XO Communications (XO) leads the top tier of Session Initiation Protocol (SIP) trunking providers with the largest installed base of SIP connectivity trunks, according to the 2015 IHS Infonetics SIP Trunking North American Service Provider Scorecard.
XO SIP trunking combines voice, data and Internet access over a single IP connection and integrates unified communications and business continuity capabilities through its network.
“With XO SIP, businesses can capitalize on a variety of unified communications applications that cost-effectively boost worker productivity. We are experiencing demand for our SIP trunks that enable businesses to reduce costs, simplify management and leverage productivity while maximizing the value of IT and network investments,” said Jake Heinz, senior vice president of marketing and product at XO Communications.
XO serves more than 2,900 cities and 80 percent of the major metropolitan markets across the United States with VoIP and SIP trunking services.
“The IP voice business has been a shining star for XO, as the provider has done an excellent job of upgrading its installed base of customers to SIP, in addition to effectively marketing its service to new businesses of all sizes,” said IHS Research Director Diane Myers.
IHS said the 10 top SIP trunking service providers in North America are AT&T, CenturyLink, Cox, Fusion, IntelePeer, Level 3, Sprint, Verizon, Windstream and XO.
Verizon leads SIP trunking provider scorecard, followed by CenturyLink, AT&T and XO.
“CenturyLink had a big jump in this year’s scorecard due to a strong and growing installed base and improved financials. XO continues to have the largest installed base of connectivity trunks. And Level 3 strengthened its position through its acquisition of TW Telecom,” Myers said.