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The TM822R delivers two lines of Voice over IP (VoIP) plus high-speed data access for all your Internet needs. It’s certified to work with Internet provider XFINITY ONLY. Add a battery backup (sold separately) to stay connected during power outages. XFINITY TM822R Internet and Voice Modem DOCSIS 3.0:
OCSIS 3.0 Cable Modem
Download speeds up to 343Mbps
8 download and 4 upload channels
Compatible with XFINITY Voice and Internet Service
2 carrier-grade Voice over IP (VoIP) Lines
IPv4 and IPv6 Support
1 x Gigabit Ethernet port
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Manufacturer Part Number
Assembled Product Dimensions (L x W x H)
2.63 x 8.66 x 11.25 Inches
The History of SURFboard Cable Modems
Average rating:5out of5stars, based onreviews
1-3 of 3 reviews
Compatible with optimum online.
Average rating:5out of5stars, based on0reviews
Works great with optimum online. Called optimum support and they were able to register this modem with optimum without any issues.
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