Amazon.com: NETGEAR Cable Modem with Voice CM500V - For Xfinity by Comcast Internet & Voice | Supports Cable Plans Up to 300 Mbps | 2 Phone lines | DOCSIS 3.0, Black, 16x4 w/ Voice (CM500V-100NAS) : Electronics
MOTOROLA MT7711 24X8 Cable Modem/Router with Two Phone Ports, DOCSIS 3.0 Modem, and AC1900 Dual Band WiFi Gigabit Router, for Comcast XFINITY Internet and Voice - Newegg.com
Amazon.com: NETGEAR Nighthawk Xfinity Modem with Voice (CM2050V) Cable Modem DOCSIS 3.1 Gigabit, Supports Cable Plans Up to 2.5 Gbps, 2 Phone Lines
How would I connect a separate phone to my Cable modem? - Phone - Phone Forum - Cox Support Forums
NETGEAR 16x4 Cable Modem with Voice, DOCSIS 3.0 | Certified for XFINITY by Comcast, Spectrum, Time Warner, Charter, and more (CM500V-100NAS) - Walmart.com