If you have a landline phone through Xfinity, you must buy a modem with phone ports, such as the Netgear Nighthawk CM2050V .
modem is the standard choice, as it supports Gigabit speeds and is widely available. what modem should i buy for comcast
Before buying, identify your plan's maximum download speed. This is typically found on your monthly Xfinity bill. You can save money with a DOCSIS 3.0 modem like the Arris SURFboard SB6183 Go to product viewer dialog for this item. . Plans 1 Gbps and above: A DOCSIS 3.1 modem is required to reach these speeds. If you have a landline phone through Xfinity,