10 Best Cable Modem With Voice Line 2026 in the United States

The NETGEAR Nighthawk Multi-Gig Cable Modem (CM2050V) offers impressive features tailored for Xfinity customers. It supports cable plans up to 2.5Gbps, making it suitable for high-speed internet users. The modem is equipped with DOCSIS 3.1 and 32x8 channel bonding, ensuring robust and reliable internet performance. Additionally, it features a 2.5 Gigabit Ethernet port, allowing for ultra-fast wired connections.

Users needing voice services will appreciate the support for up to two telephone lines with enhanced call features such as caller ID and call forwarding. This modem can save you up to $168 per year by eliminating the need for equipment rental fees from your ISP. However, it is only compatible with Xfinity Voice plans and not with other providers like Verizon Fios or AT&T.

It does not have built-in Wi-Fi, so you'll need a separate Wi-Fi router. This might be a slight inconvenience for those looking for an all-in-one solution. Despite these limitations, its strong performance and extensive features make it a strong contender for Xfinity users seeking both high-speed internet and voice line capabilities.

The Motorola MT8733 is a solid choice for Xfinity internet and voice customers who want a combined modem, router, and voice line device. It uses the latest DOCSIS 3.1 standard, which supports fast and reliable cable internet up to 2.5 Gbps, making it suitable for heavy internet users, gamers, or households with multiple devices. It includes one 2.5 Gigabit Ethernet port and three 1 Gigabit ports, offering flexible wired connections. The built-in WiFi 6 (AX6000) delivers fast and stable wireless coverage, ideal for modern smart homes and gaming needs. Two phone ports support Xfinity voice lines with features like caller ID and call forwarding, but these phone features only work with Xfinity voice services—not other providers.

Setup is simplified via the Smart Motosync app, which also helps with network management and security. It lacks compatibility with non-Xfinity voice services, so it's not a good fit if you use a different phone provider. For Xfinity customers looking to save on rental fees and who want a future-proof, high-speed modem/router combo with voice line support, the MT8733 offers strong performance and convenience. Those with another ISP or requiring voice line flexibility beyond Xfinity will need to consider other options.

The Netgear CM2050V Nighthawk is a cable modem designed mainly for Xfinity customers who want fast internet and a voice line. It supports DOCSIS 3.1, the latest standard for cable internet, allowing very high speeds up to 2.5 Gbps. This makes it a solid choice if you have a multi-gigabit internet plan or want to future-proof your setup.

It includes two Ethernet ports, which lets you connect more than one wired device directly without needing an extra switch, though it does not replace a full router with multiple ports. The modem supports voice lines, so it works with Xfinity’s phone service, which is great if you want to keep your home phone connected. However, it does not have built-in Wi-Fi, so you will need a separate router if you want wireless connectivity.

The unit is well-built and comes with necessary cables and a quick start guide, but the warranty is only 90 days, so keep that in mind. Customer reviews are generally positive, with a rating around 3.9 out of 5, suggesting it performs reliably but might have occasional issues or limitations for some users. This modem is ideal for Xfinity users who need very fast wired internet plus voice support but already have or plan to get a separate Wi-Fi router.