The NETGEAR C7100V is CableLabs DOCSIS® 3.0 three-in-one high-speed cable modem + AC1900 WiFi router + XFINITY® Voice. This cable modem router gives you high-speed Internet connection with combined speeds of up to 1.9Gbps with AC19000 WiFi. Supports two XFINITY® Voice telephone lines with battery backup. Enhanced features include 3-way conference calling, caller ID, call forwarding and more. Ideal for XFINITY® Internet and Voice service.