Cable ONE Phone Installation Kit with Wired Ultra-High Speed Data Wired Ultra-High Speed Telephony Modem for Cable ONE Phone. The Touchstone DOCSIS 3.0 (EMTA) TM822G delivers up to two lines of primary line Voice over IP (VoIP), ultra-high speed data access, and a battery pack to support telephony service during power outages. Includes a 2-cell Li-Ion Battery Pack for up to 8 hours of battery back-up. 1 year limited warranty. 50 Mbps Internet speed capable. SKU 801107K.