Best Docsis 3.1 Telephony Modem

Peter | 11-04-2025

Navigating the many Best Docsis 3.1 Telephony Modem options on the market – from major brands like ARRIS,Motorola to lesser-known names – can feel overwhelming. But we’re here to help simplify your search for the best products.

After extensive research testing hundreds of Best Docsis 3.1 Telephony Modem, we’ve selected the top contenders. Our number one recommendation is ARRIS Best Docsis 3.1 Telephony Modem based on its stellar performance and quality. Below you’ll find more of our top-rated picks for the best Best Docsis 3.1 Telephony Modem currently available.

Be sure to consult our handy buying guide as well for expert tips on choosing the right Best Docsis 3.1 Telephony Modem to suit your individual needs. It has all the crucial information you need to make an informed purchasing decision. With our guidance backing your choice, finding your perfect match will be smooth sailing!

Editor's Choice
ARRIS SURFboard T25 DOCSIS 3.1 Gigabit Cable Modem | Comcast Xfinity Internet & Voice | Two 1 Gbps
ARRIS SURFboard T25 DOCSIS 3.1 Gigabit Cable Modem | Comcast Xfinity Internet & Voice | Two 1 Gbps
Premium Pick
Arris TM3402 32x8/2x2 DOCSIS 3.1 Telephony Cable Modem with 2 Voice Ports TM3402A (Not Wireless)
Arris TM3402 32x8/2x2 DOCSIS 3.1 Telephony Cable Modem with 2 Voice Ports TM3402A (Not Wireless)
Budget Pick
Arris Surfboard T25-RB DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps
Arris Surfboard T25-RB DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps

Top 10 Best Docsis 3.1 Telephony Modem

We researched and compared the top products in the Best Docsis 3.1 Telephony Modem category to provide you with these recommendations.

1. ARRIS SURFboard T25 DOCSIS 3.1 Gigabit Cable Modem | Comcast Xfinity Internet & Voice | Two 1 Gbps

  • A Trusted Name in Home Connectivity: Better connectivity, better speed. The ARRIS SURFboard T25 DOCSIS 3.1 Cable Modem is designed to bring you superior connectivity, increase your network capability and provide faster streaming and downloading throughout your home. From a strusted brand with over 260 million modems sold and growing.
  • Save Money: Own your modem and save. Reduce your cable bill up to $168 dollars per year in cable modem rental fees. For use with Xfinity Internet & Voice Service. Preset Wi-Fi Security: No
  • Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming & enables multi-gig networking (ability to run fast speeds on your copper cable from your internet provider).
  • Simple and Secure Set-up: Plug-in the device, download the SURFboard Central App, and follow the instructions to activate the modem. Connect to a Wi-Fi router for networking.
  • Compatibility: The SURFboard T25 is compatible with Xfinity Internet & Voice service and is approved for cable internet speed plans up to 800 Mbps.
  • What's in the Box: When you purchase you will get an ARRIS SURFboard T25 Cable Modem, Power Supply, Quick-Start guide, and 2-year warranty card.
  • Ethernet & Telephony Ports: Has two 1-Gigabit ethernet ports to connect to a Wi-Fi router or other wired device plus two telephony ports for digital voice service.
  • Dedicated Customer Support: Live Chat and Phone Support available 8am -1am EST.
  • Warranty Provided by ARRIS: Product ships with 2-Year Limited Warranty.

2. Arris Surfboard T25-RB DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps

  • Approved for Cox, Spectrum and Xfinity internet along with other US cable internet providers. Is NOT compatible with ATT, CenturyLink, Verizon, Frontier or other Fiber Optic, DSL or Satellite internet service providers.
  • Does support cable digital voice service. Only compatible with Comcast Xfinity Voice
  • ARRIS Surfboard T25 DOCSIS 3.1 Gigabit Cable Modem | Comcast Xfinity Internet & Voice | Two 1 Gbps Ports | 2 Telephony Ports | 800 Mbps Max, Xfinity Plans | 1 Year Warranty

3. Arris TM3402 32x8/2x2 DOCSIS 3.1 Telephony Cable Modem with 2 Voice Ports TM3402A (Not Wireless)

  • Not Supported for Cox Cable Services.
  • Up to 8 channels, comprised of any mix of up to 8 SC-QAM or 2 OFDMA
  • 2x2 OFDM/A, Up to 32 channels, comprised of any mix of up to 32 SC-QAM or 2 OFDM
  • 2x VoIP RJ11 & 4 x 10/100/1000 Base-T Ethernet (RJ45 connector). DC power inlet with integrated 5-pin telemetry. External F type connector.
  • The device is optimized for providing Gigabit data services over DOCSIS 3.1 WAN

4. ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem | Approved for Comcast Xfinity, Cox, Charter Spectrum,

  • A Trusted Name in Home Connectivity: Better connectivity, better speed. The ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem is designed to bring you superior connectivity, increase your network capability and provide faster streaming and downloading throughout your home. From a trusted brand with over 260 million modems sold and growing.
  • Save Money: Own your modem and save. Reduce your cable bill up to $168 dollars per year in cable modem rental fees (Savings vary by cable service provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
  • Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming & enables multi-gig networking (ability to run fast speeds on your copper cable from your internet provider).
  • Simple and Secure Set-up: Plug-in the device, download the SURFboard Central App, and follow the instructions to activate the modem. Connect to a Wi-Fi router for networking.
  • Compatibility: The SURFboard SB8200 is compatible with major U.S. cable internet providers including Cox (Gigablast), Spectrum (Internet Gig), Xfinity (Blast!/Extreme Pro) and others. It's approved for cable internet speed plans up to 1-Gbps. Check your Internet Service Provider (ISP) website to confirm compatibility.
  • What's in the Box: When you purchase you will get an ARRIS SURFboard SB8200 Cable Modem, Power Supply, Quick-Start guide, and 2-year warranty card.
  • Ethernet Ports: Has two 1-Gigabit ethernet ports to connect to a Wi-Fi router or other wired device.
  • Dedicated Customer Support: Live Chat and Phone Support available 8am -1am EST.
  • Warranty Provided by ARRIS: Product ships with 2-Year Limited Warranty.

5. Arris TM3402 32x8/2x2 DOCSIS 3.1 Telephony Cable Modem with 2 Voice Ports TM3402A (Not Wireless)

6. Motorola MB8611 DOCSIS 3.1 Multi-Gig Cable Modem | Pairs with Any WiFi Router | Approved for Comcast

Motorola MB8611 DOCSIS 3.1 Multi-Gig Cable Modem | Pairs with Any WiFi Router | Approved for Comcast
8.7

Motorola

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  • Ultra-fast DOCSIS 3.1 performance - Delivers true Gigabit-plus speeds. Supports fast internet plans with Comcast Xfinity, Cox, and Spectrum. Backward compatible with 32x8 DOCSIS 3.0.
  • Pairs with any WiFi router - Seamlessly compatible with any WiFi router to connect all your devices. This cable modem does NOT have a built-in wireless router or telephone call capability.
  • Multi-gigabit Ethernet speed - A 2.5 GB Ethernet port delivers true high-speed connectivity to even the fastest routers and computers, providing downstream speeds just below 2,500 Mbps and upstream speeds up to 800 Mbps when supported by your internet service plan.
  • Fast streaming, conferencing, gaming - Applies Active Queue Management (AQM) for reduced Internet latency and better app performance, including online gaming, conferencing, and streaming.
  • Extreme cost savings - Owning your own modem typically saves the home $168 per year in monthly rental charges. (Savings described is for Comcast Xfinity and vary by service provider.)
  • Built for reliability - Motorola is a worldwide leader in technology people depend on. Comes with a 2-year warranty and free support from our team of USA technicians.

7. ARRIS SURFboard T25 DOCSIS 3.1 Gigabit Cable Modem, Certified for Xfinity Internet & Voice (black)

  • DOCSIS 3 1 Cable Modem with 32 downstream x 8 upstream DOCSIS 3 0 channels, 2 downstream x 2 upstream OFDM DOCSIS 3 1 channels
  • Two 1-Gigabit Ethernet ports and 2 Telephony ports for Xfinity digital voice service
  • Best for Xfinity internet speed plans up to 2 Gbps
  • Certified to work with Xfinity internet & voice service Not certified for use with other cable internet service providers
  • Xfinity internet service required Does not include Wi-Fi

8. ARRIS SURFboard - SB8200 - Renewed - DOCSIS 3.1 Cable Modem, Approved for Comcast Xfinity, Cox,

  • Approved for Cox, Spectrum and Xfinity internet along with other US cable internet providers. Is NOT compatible with ATT, CenturyLink, Verizon, Froniter or other Fiber Optic, DSL or Satellite internet service providers.
  • Does NOT include Wi-Fi and Does NOT support cable digital voice service.
  • The SURFboard SB8200 is compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others. It is approved for cable internet speed plans up to 1 Gbps. Check your cable ISP website to confirm compatibility.
  • 32 downstream x 8 upstream DOCSIS 3.0 bonded channels, or 2 downstream x 2 upstream OFDM DOCSIS 3.1 channels.
  • Two 1-Gigabit Ethernet ports

9. NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1 Cable Modem and WiFi 6 Router - AX2700 2.7

NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1 Cable Modem and WiFi 6 Router - AX2700 2.7
7.9

Netgear

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  • Compatible with major cable internet providers including Xfinity, Spectrum, Cox and more. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service. Best for cable provider plans up to 2Gbps
  • Coverage up to 2,500 sq. ft. and 25 concurrent devices with dual-band WiFi 6 (AX2700) speed (up to 2.7Gbps)
  • 4 X 1 Gig Ethernet ports (supports port aggregation) and 1 USB 3.0 port for computers, game consoles, streaming players, storage drive, and other wired devices
  • Replaces your cable modem and WiFi router. Save up to $168/yr in equipment rental fees
  • DOCSIS 3.1 and 32x8 channel bonding
  • NETGEAR Armor software provides an automatic shield of security for your WiFi and connected devices for real-time protection against hackers and added privacy with VPN. 30-day trial included
  • NETGEAR routers have security features enabled out of the box with automatic firmware updates, and industry-leading safety features to help protect you and your family
  • Easily set up and manage your WiFi with the Nighthawk app

10. Arris Touchstone DG3450 Cable Modem Wireless Gateway DOCSIS 3.1 with 802.11ac Wi-Fi & MoCA 2.0

  • Not compatible with Xfinity. Lightning-fast DOCSIS 3.1 Technology: Experience unparalleled internet speeds with the DG3450 Modem, featuring the latest DOCSIS 3.1 technology for rapid downloads, uploads, and seamless streaming.
  • Dual-Band Wi-Fi for Optimal Performance: Enjoy robust connectivity with the DG3450's dual-band Wi-Fi, offering both 2.4GHz and 5GHz frequencies for extended coverage and multiple device support without compromising speed.
  • Four Gigabit Ethernet Ports: Connect your devices directly with the DG3450 Modem's four Gigabit Ethernet ports, ensuring high-speed, stable connections for gaming, streaming, and more.
  • Advanced Security Features: Protect your network with the DG3450 Modem's built-in firewall and customizable parental controls, safeguarding your devices and data from unauthorized access and intruders.
  • Eco-Friendly & Energy-Efficient Design: Upgrade your connectivity with the environmentally-conscious DG3450 Modem, featuring energy-saving features for a greener, more efficient online experience.

Peter

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