Works with all internet service providers, such as AT&T, Verizon, Xfinity, Spectrum, RCN, Cox, CenturyLink, Frontier, etc.( a modem is required for most internet service providers)
2 SIP lines, SIP hotspot
2.3” Dot-matrix display
HD audio on speakerphone and handset
Support local 6-way audio conference
Dual Fast ports, integrated PoE (only X3SP Lite)