XO Communications is a provider of network services that offers a cloud-based phone system, XO Hosted PBX, designed for businesses with 50 to 1,000 employees. In addition to hosting VoIP applications, XO also offers SIP trunking services for businesses that need to connect calls to the traditional phone network.
XO provides broadband Internet connections via time-division multiplexing (TDM), copper, fiber and wireless, and can thus offer fully managed connections to SIP trunking and PBX services for businesses with XO Dedicated Internet Access. XO tests a network before the sale so that buyers can be aware of any potential issues before signing on for services.
XO Hosted PBX includes a range of PBX features, such as an auto attendant, call forwarding and call transfer. It also enables bring-your-own-device (BYOD) programs via the XO WorkTime mobile client.