Coronavirus (COVID-19) Disruption

“Our Call Center is experiencing a high number of calls due to the COVID-19 situation. We are working to assist everyone who contacts us. In the meantime, please visit for most frequently asked questions about your device. We apologize for the inconvenience and will assist you soon.”


Xfinity® Telephony Modem

The Touchstone DOCSIS 3.0 8×4 Embedded Multimedia Terminal Adaptor (EMTA) TM822 delivers two lines of primary line Voice over IP (VoIP), ultra-high speed data access, and multiple battery pack options to support telephony service during power outages (TM822G only).

DOCSIS 3.0 Cable Modem

Download speeds up to 343 Mbps

8 download & 4 upload channels

Compatible with Xfinity® Voice & Internet Service

2 carrier-grade VoIP Lines

IPv4 & IPv6 Support

Already own this product?
For warranty purposes, register your device by clicking here.

Operator Support Site click here.

Manuals & Documentation
Drivers & Firmware