The best modem for a phone line depends on your cable provider, internet speed, and whether you want built-in Wi-Fi. For faster Xfinity Voice plans, the NETGEAR CM2050V supports plans up to 2.5 Gbps but needs a separate router. The C7100V and Motorola MT7711 combine modem, router, and voice features in one device. The Hitron CODA56 is included as a comparison, but it has no phone ports and is not a phone-line solution.
| Product | Best For | Phone Support | Wi-Fi |
|---|---|---|---|
| NETGEAR CM2050V | Fast Xfinity plans | Two phone lines | Separate router required |
| NETGEAR CM1150V | Xfinity plans up to 800 Mbps | Two phone lines | Separate router required |
| NETGEAR C7100V | All-in-one Xfinity setup | Xfinity Voice | Built in |
| Motorola MT7711 | Renewed all-in-one option | Two Xfinity Voice ports | Built in |
| Hitron CODA56 | Internet-only comparison | None listed | Separate router required |
NETGEAR Nighthawk CM2050V
Best for: Xfinity Voice customers with a multi-gig cable plan who already have, or plan to buy, a separate Wi-Fi router. This DOCSIS 3.1 modem supports cable plans up to 2.5 Gbps and provides two phone lines.
NETGEAR lists the CM2050V as compatible with Xfinity Internet and Voice, including Xfinity Triple Play. It works with a separate Wi-Fi router connected through its Ethernet port, allowing the buyer to choose their own wireless equipment.
Limitation: It is not an all-in-one Wi-Fi router. The listed compatibility excludes providers such as Verizon, AT&T, CenturyLink, and DSL services, so confirm the internet type and provider before buying.
NETGEAR Nighthawk CM1150V
Best for: Xfinity subscribers with internet and voice plans up to 800 Mbps who want a standalone cable modem. This DOCSIS 3.1 model supports two phone lines and includes four Gigabit Ethernet ports.
Like the CM2050V, the CM1150V requires a separate Wi-Fi router. Choose it if you want a modem and router as separate components or already own a compatible router. NETGEAR says it is certified for Xfinity Internet and Voice service.
Limitation: The listed plan-speed support is up to 800 Mbps, so it is a less suitable match for customers seeking the CM2050V’s stated multi-gig capacity. Confirm current service compatibility with Xfinity.
NETGEAR Nighthawk C7100V Combo
Best for: Xfinity customers who want a combined cable modem, Wi-Fi router, and voice device. The C7100V combines a DOCSIS 3.0 modem, AC1900 Wi-Fi, Xfinity Voice, and two USB ports in one unit.
Its listed support is for Xfinity Cable and Voice plans up to 600 Mbps. It can reduce the need to purchase and set up a separate modem and wireless router, making it a practical choice for buyers prioritizing a single-device setup.
Limitation: The stated plan ceiling is lower than the CM2050V and CM1150V. Its listed service compatibility is Xfinity, so it is not the right pick for someone using a different internet provider.
Motorola MT7711 Renewed
Best for: Xfinity customers looking for a renewed all-in-one device for internet service up to 400 Mbps. It combines a 24×8 DOCSIS 3.0 modem, dual-band AC1900 Wi-Fi, four Gigabit Ethernet ports, and two Xfinity Voice-compatible phone ports.
Choose this model if built-in Wi-Fi and voice ports matter more than support for higher listed plan speeds. Its bundled functions can simplify a home setup compared with buying a standalone modem and router.
Limitation: The product is listed as renewed, requires Comcast Xfinity, and is recommended for service speeds up to 400 Mbps. It is not a match for non-Xfinity providers or higher-speed plans based on the supplied details.
Hitron CODA56 Modem Only
Best for: Cable internet customers comparing modem-only equipment who do not need a phone line through the modem. The CODA56 is a DOCSIS 3.1 cable modem listed for speeds up to 2.5 Gbps and cable providers including Xfinity, Spectrum, and Cox.
Important distinction: The supplied product details do not list phone ports or voice service. It is therefore not a suitable choice when the goal is a modem with a phone line. It also has no built-in Wi-Fi, so a separate router is required for wireless access.
Limitation: It works only with cable internet, not fiber, DSL, satellite, or fixed wireless service. Verify compatibility with the provider before purchase.
Buying Guide: How to Choose a Modem With a Phone Line
Does the modem support your phone provider?
Check voice compatibility separately from internet compatibility. The listed voice-capable products in this comparison are designed for Xfinity Voice. A modem may support cable internet from a provider without supporting that provider’s phone service. Confirm that the exact model is approved for both services before ordering.
Should you choose a combo or separate devices?
A combo such as the C7100V or MT7711 includes modem and Wi-Fi router functions, which can simplify equipment setup. A standalone voice modem such as the CM2050V or CM1150V needs a separate router, but lets you choose wireless equipment independently. The Hitron is modem-only and has no listed phone support.
What speed rating should you compare?
Match the modem’s stated plan support to your internet tier. The CM2050V is listed for plans up to 2.5 Gbps, the CM1150V up to 800 Mbps, the C7100V up to 600 Mbps, and the renewed MT7711 up to 400 Mbps. These figures do not replace provider confirmation of current compatibility.
How many phone lines do you need?
The CM2050V, CM1150V, and MT7711 list support for two phone lines or phone ports. The C7100V lists Xfinity Voice, but the supplied features do not specify a phone-line count. Check the product and provider requirements if you need more than one line.
Frequently Asked Questions
Can any cable modem connect to a landline phone?
No. The modem must support the provider’s voice service and have the required phone connection. A cable modem that provides internet access alone may not handle phone service.
Do these voice modems work with every internet provider?
No. The voice-capable models listed here are specified for Xfinity service. Provider approval and voice compatibility should be confirmed before purchase.
Do I need a separate Wi-Fi router?
You need one with the CM2050V and CM1150V, and the Hitron CODA56 also requires a separate router for Wi-Fi. The C7100V and MT7711 include router functions.
Is the Hitron CODA56 suitable for Xfinity Voice?
The provided features do not list phone ports or voice support, so it should not be selected as a modem for Xfinity Voice.
Can I use a voice modem with fiber or DSL?
The NETGEAR and Motorola products here are described for cable service, while the Hitron explicitly excludes fiber and DSL. Choose equipment specified for your internet technology and phone provider.