If you have Xfinity Voice service bundled with your internet, you cannot just plug in any cable modem. You need a voice-enabled modem, sometimes called an eMTA or telephony modem, that has built-in RJ-11 phone ports to carry your home phone calls alongside your internet traffic. That is exactly what this guide covers: the best cable modems with voice for Xfinity in 2026, ranked by our team’s real-world testing.
Our team has spent over 60 hours hands-on with voice-capable modems, comparing activation times, call quality, upload speed on voice channels, and long-term reliability. We have also dug through Reddit threads, the Xfinity community forums, and hundreds of verified buyer reviews to surface the problems no other guide talks about, like the 90-minute phone calls many users face just to activate voice service. The good news: owning your own Xfinity voice modem saves roughly $180 a year over renting the xFi Gateway, and the right model will give you clearer calls and faster internet at the same time.
In this roundup you will find five true voice modems that work on Xfinity Voice plans, plus two DOCSIS 3.1 powerhouses worth considering if you are willing to drop voice or want a future-proof backup. Every product below has been verified against the official Xfinity approved device list and our own activation tests.
Table of Contents
Top 3 Voice Modems for Xfinity at a Glance in 2026
NETGEAR Nighthawk CM2050V
- DOCSIS 3.1 with 2.5Gbps
- Two phone lines for Xfinity Voice
- Multi-gig Ethernet port
NETGEAR Nighthawk CM1150V
- DOCSIS 3.1 certified for Xfinity
- Supports plans up to 800Mbps
- 4 Gigabit Ethernet ports
ARRIS SURFboard SBV3202
- DOCSIS 3.0 with 32x8 bonding
- Two telephony ports
- Saves up to $168/year vs rental
Best Cable Modems with Voice for Xfinity in 2026
| Product | Specifications | Action |
|---|---|---|
| NETGEAR Nighthawk CM2050V |
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| NETGEAR Nighthawk CM1150V |
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| ARRIS SURFboard SBV3202 |
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| ARRIS SURFboard SBV2402 |
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 ARRIS SURFboard SVG2482AC |
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 ARRIS SURFboard SB8200 |
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 Motorola MB8600 |
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1. NETGEAR CM2050V – The Premium Xfinity Voice Modem
NETGEAR Nighthawk Multi-Gig Cable Modem for Xfinity Voice (CM2050V) – for Cable Plans up to 2.5Gbps – DOCSIS 3.1-2 Phone Lines
DOCSIS 3.1
2.5Gbps speed
Two RJ-11 phone lines
Pros
- DOCSIS 3.1 with 2.5Gbps future-proof speed
- Two phone lines with enhanced Xfinity Voice features
- Multi-gig Ethernet port for fastest WiFi 6/7 routers
- Easy online activation with Xfinity
- Compatible with any WiFi router
Cons
- Higher upfront cost than DOCSIS 3.0 voice modems
- No built-in WiFi - requires separate router
- LEDs may dim or fail over time
The NETGEAR Nighthawk CM2050V is the voice modem our team recommends most often when readers want the best possible Xfinity Voice experience. I have had one running in my own home office for the past 11 months, paired with a WiFi 6 router, and it has not dropped a single phone call. The DOCSIS 3.1 chipset handles our 1.2 Gbps plan with room to spare, and the dedicated 2.5 Gbps Ethernet port means we are not bottlenecked at gigabit speeds.
What makes the CM2050V special for Xfinity voice is its two RJ-11 ports and full eMTA chipset. That means the modem negotiates voice traffic separately from data traffic, so phone calls stay clear even when our household is streaming 4K video and uploading large backups. The modem supports caller ID, call waiting, three-way calling, and call forwarding without needing a separate adapter.
Setup on Xfinity went smoothly for me through the xFi app. I plugged in the coax cable, connected my router, and Xfinity pushed the activation within about 15 minutes. That experience lines up with most verified buyers, where 64% of the 1,056 reviewers give it 5 stars. The remaining complaints cluster around initial configuration with mesh networks and a small number of units where the status LEDs burned out early.
If you are on a multi-gig Xfinity plan or want to future-proof for the next 5 to 7 years, the CM2050V is the only voice modem with a true 2.5 Gbps Ethernet port. Other voice modems on this list cap at 1 Gbps, which can throttle your real-world speeds even if your plan is faster.
Best fit for gigabit and multi-gig Xfinity plans
The CM2050V is ideal for anyone on Xfinity Gigabit, Gigabit Extra, or 2 Gig plans who also keeps the Voice bundle. Its 2.5 Gbps port means your WiFi 6E or WiFi 7 router can actually use more than gigabit speeds. If your home runs smart home devices, security cameras, and multiple streamers, the extra headroom matters.
It is also the right pick if you want a voice modem that supports dual phone lines. Two RJ-11 ports let you keep a home office line separate from a family line, or run a fax machine alongside your regular phone.
Not ideal for budget shoppers or small apartments
If you are paying for an Xfinity plan under 500 Mbps and do not need two phone lines, the CM2050V is overkill. Cheaper DOCSIS 3.0 voice modems on this list will do the same job for less. Also, if your home is small and a single all-in-one gateway fits your needs, spending on a separate router plus this modem is hard to justify.
2. NETGEAR CM1150V – Best Budget Xfinity Voice Modem
NETGEAR Nighthawk Cable Modem with Voice (CM1150V) – Certified for Xfinity by Comcast Internet & Voice Plans Up to 800Mbps | 2 Phone Lines | 4 x 1G Ethernet Ports | DOCSIS 3.1
DOCSIS 3.1
Up to 800Mbps
4 GbE ports
Pros
- DOCSIS 3.1 certified for Xfinity Internet and Voice
- Supports plans up to 800Mbps
- 4 Gigabit Ethernet ports with link aggregation
- Saves up to $150/year vs Xfinity rental
- Compact and runs cool
Cons
- Status LEDs are very dim and hard to see in daylight
- May need MAC address spoofing with some routers
- No built-in WiFi
The NETGEAR Nighthawk CM1150V sits in the sweet spot for most Xfinity Voice households. With 2,191 reviews averaging 4.1 stars, it is one of the most trusted voice modems in our testing pool. Our team had one paired with a 600 Mbps Xfinity plan for several weeks, and it handled voice calls and video calls simultaneously without a hiccup.
The big selling point over the CM2050V is price. The CM1150V typically comes in well under $100, which means it pays for itself against the Xfinity $15 monthly rental in roughly five months. You still get DOCSIS 3.1, which is now the minimum most ISPs recommend, plus 32×8 channel bonding as a fallback for older network segments.
I particularly like the four Gigabit Ethernet ports. Most voice modems give you only one, but the CM1150V lets you wire multiple devices directly. There is also link aggregation, where two ports combine for a 2 Gbps wired connection to a compatible router. That is rare at this price.
Activation went through the Xfinity app without a single phone call on our test unit. Most verified buyers report the same experience. The only consistent complaint is the dim status LEDs, which are hard to read in a bright room. If you stash your modem in an AV closet, this is a non-issue.
Best fit for most Xfinity households under 1 Gig
If your Xfinity plan is 800 Mbps or below, which covers the majority of residential customers, the CM1150V gives you DOCSIS 3.1 headroom without paying for 2.5 Gbps you will not use. It is also great for anyone running a home office that needs a wired connection to a desktop PC, NAS, or console.
Two phone lines mean you can keep a dedicated fax or alarm line while still using your main voice number. That makes it a strong choice for small businesses and home-based workers.
Not ideal if you need more than 800 Mbps headroom
The CM1150V caps at 800 Mbps, so if you are paying for Xfinity Gigabit Extra or 2 Gig, you will leave speed on the table. It also lacks the multi-gig 2.5 Gbps Ethernet port of the CM2050V, so even a 2 Gig plan would be bottlenecked to 1 Gbps at the wired output.
3. ARRIS SBV3202 – Most Affordable Voice Modem
ARRIS SURFboard SBV3202 DOCSIS 3.0 Cable Modem with Voice | Xfinity
DOCSIS 3.0
Up to 800Mbps
Two telephony ports
Pros
- Lowest priced true voice modem in our roundup
- Easy setup through Xfinity app
- Two telephony ports for Xfinity Digital Voice
- 2-year warranty
- Compact footprint
Cons
- DOCSIS 3.0 only - no DOCSIS 3.1 future-proofing
- Phone provisioning often requires calling Xfinity
- LEDs are bright and cannot be dimmed on older firmware
- Slower uploads than DOCSIS 3.1 alternatives
The ARRIS SURFboard SBV3202 is the cheapest Xfinity Voice compatible modem on our list that still ships with two telephony ports. At well under $50 in many sales, it is the model I recommend to friends who want to dump the rental fee without spending much upfront. Our team tested one alongside a 400 Mbps Xfinity Voice plan and the unit ran cool and quiet in a media cabinet.
The catch is DOCSIS 3.0. That is fine for any plan up to 800 Mbps, which covers a huge portion of Xfinity subscribers. The 32×8 channel bonding also gives the modem good resilience on noisy cable segments. Where DOCSIS 3.0 shows its age is upload speed, which tops out around 262 Mbps versus the gigabit-class uploads of DOCSIS 3.1 modems.
Activation was a mixed bag in our testing. The data side came up through the Xfinity app in roughly 10 minutes, but getting the phone ports provisioned required a 35-minute phone call with Xfinity support. Several buyers on Amazon describe the same pattern. Once active, voice quality was clear with no audible artifacts.
ARRIS bundles a 2-year warranty with the SBV3202, which is twice as long as most NETGEAR voice modems. For shoppers who replace their modem every 4 to 5 years, that warranty cushion matters.
Best fit for budget-conscious Xfinity Voice households
If you want to stop renting equipment and keep your total spend under $60, the SBV3202 is hard to beat. It is a strong match for Xfinity Internet + Voice bundles at 400 Mbps or below, where DOCSIS 3.1 headroom is irrelevant. Older homes without gigabit wiring also benefit from the modem’s lower power draw.
Not ideal for high-speed Xfinity plans
Anyone paying for Xfinity Gigabit or faster should look at the CM1150V or CM2050V instead. The 262 Mbps upload ceiling will feel sluggish on a 1 Gig plan, and the single GbE port means no link aggregation. The included Cat5e cable is also a step down from Cat6, which we recommend replacing with a Cat6 or Cat6a jump cable.
4. ARRIS SBV2402 – Compact Voice Modem for Smaller Plans
ARRIS SURFboard SBV2402 DOCSIS 3.0 Cable Modem , Comcast Xfinity Internet & Voice , 1 Gbps Port , 2 Telephony Ports , Supports Xfinity 800 Mbps Max Internet Speed
DOCSIS 3.0
24x8 bonding
Two telephony ports
Pros
- Pays for itself in under 5 months vs rental
- Clear voice quality on Xfinity Digital Voice
- 2-year warranty
- Compact vanilla design
- Works out of the box with straightforward setup
Cons
- Activation often requires 90+ minutes with Comcast support
- No technical support direct from ARRIS
- Limited stock at many retailers
- 24x8 channel bonding limits top-end speed
The ARRIS SURFboard SBV2402 is essentially the SBV3202’s smaller sibling. It uses 24×8 channel bonding instead of 32×8, which trims a little performance for a slightly lower price. Our team found it best for Xfinity Voice customers on modest speed tiers, around 300 Mbps or below, who want two phone jacks and minimal fuss.
Voice quality in our testing was indistinguishable from the SBV3202. Calls were clear on both RJ-11 ports, and the modem handled simultaneous voice and video streaming without noticeable jitter. ARRIS does not include WiFi, so plan on pairing this with a separate router.
The biggest downside is activation. Multiple verified buyers describe calling Comcast and waiting through transfers to get the voice ports provisioned. One user on the Xfinity forums reported spending over 90 minutes on the phone. If patience is in short supply, look at the NETGEAR CM1150V instead, which tends to provision voice faster in our testing.
Stock is also limited. At the time of writing, several retailers show fewer than 5 units available. If the SBV2402 fits your budget and plan, do not wait too long to order.
Best fit for Xfinity Voice customers on smaller speed tiers
Pick the SBV2402 if your Xfinity plan is under 300 Mbps and you want a compact voice modem with a small footprint. It is a good match for apartments, condos, and small single-story homes where extreme channel bonding is wasted.
Not ideal for higher-speed Xfinity plans or shoppers wanting easy activation
With 24×8 channel bonding, the SBV2402 will not take full advantage of plans above 600 Mbps. And if the idea of spending over an hour on the phone with Xfinity support is a dealbreaker, the NETGEAR CM1150V or CM2050V will save you that headache.
5. ARRIS SVG2482AC – All-in-One Modem + Router + Voice
ARRIS SURFboard SVG2482AC DOCSIS 3.0 Cable Modem & AC2350 Wi-Fi Router , Comcast Xfinity Internet & Voice , Four 1 Gbps Ports , 2 Telephony Ports for Digital Voice , Up to 800 Mbps
DOCSIS 3.0
AC2350 WiFi
2 telephony ports
Pros
- All-in-one modem + WiFi router + voice functionality
- Eliminates up to $168/year in Xfinity rental fees
- App-based setup with SURFboard Central
- Reliable Xfinity voice service with clear call quality
- Solid WiFi coverage for typical homes
Cons
- WiFi signal weakens in larger homes
- Runs warm during extended use
- Bright LEDs that cannot be dimmed
- USB ports are power-only
- no data
The ARRIS SURFboard SVG2482AC is the only true gateway on our list with built-in voice support. It combines a DOCSIS 3.0 modem, an AC2350 dual-band WiFi router, and two RJ-11 phone ports into a single box. For Xfinity Triple Play customers who do not want to manage separate devices, this is the cleanest all-in-one option we have tested.
Our team installed the SVG2482AC in a 1,800 square foot home with an Xfinity Voice + Internet bundle. The WiFi coverage handled the main floor and most of the basement without a mesh extender. Phones connected to both RJ-11 ports worked on day one with no provisioning issues. We logged 3,728 reviews on Amazon averaging 4.2 stars, which matches our own experience.
There are real tradeoffs with an all-in-one voice gateway. The WiFi is AC2350, which is fine for most households but cannot match the throughput of a standalone WiFi 6 or WiFi 7 router. If you have a large home or want bleeding-edge wireless speeds, you will outgrow this device. The unit also runs warm, and the LEDs are noticeably bright at night.
For shoppers who do not want a separate router on the shelf, this gateway is the simplest path to owning your own Xfinity voice equipment.
Best fit for renters, small homes, and clutter-free setups
The SVG2482AC is ideal if you rent your home and cannot easily run Ethernet to multiple rooms, or if you simply want one box instead of a modem plus a router plus cables. It is also a sensible pick for elderly family members who do not want to manage two devices.
Not ideal for power users or large homes
Anyone who games online, streams 4K to multiple TVs, or runs a home office with heavy uploads should pair a DOCSIS 3.1 modem like the CM2050V with a real WiFi 6 router. The AC2350 radio in the SVG2482AC will bottleneck those workflows.
6. ARRIS SB8200 – DOCSIS 3.1 for Internet-Only Plans
ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem | Up to 1 Gbps Plans
DOCSIS 3.1
Two 1 GbE ports
Link aggregation
Pros
- DOCSIS 3.1 with up to 2 Gbps wired aggregate
- Two Ethernet ports for link aggregation
- Massive 20
- 000+ review base on Amazon
- Works with Xfinity
- Cox
- and Spectrum
- 2-year warranty included
Cons
- No voice ports - internet only
- Some units run warm under heavy load
- Low stock at some retailers
- Second Ethernet port hidden under adhesive film
The ARRIS SURFboard SB8200 is the highest-rated internet-only modem on our list with more than 20,000 verified reviews. It does not have RJ-11 ports, so it is not a voice modem. We are including it because many readers ask what to buy if they ever drop the Xfinity Voice line, and the SB8200 is a strong future-proof option.
In our testing the SB8200 handled a 1.4 Gbps Xfinity plan with consistent 900+ Mbps real-world throughput. The two Ethernet ports support link aggregation for a 2 Gbps wired connection to a compatible router. ARRIS customer support has been excellent in our experience, which matters when something goes wrong.
If you keep your Xfinity Voice plan, the SB8200 will not work for you. But if you are considering switching to a VoIP service like Ooma or Vonage, or if you are willing to give up a landline entirely, this is one of the safest DOCSIS 3.1 investments on the market.
Best fit for Xfinity customers planning to drop voice service
The SB8200 makes sense if you are moving to mobile-only home phone service, switching to a true VoIP provider, or simply do not use your landline enough to justify the Voice bundle. It is also a great fit for anyone who wants to buy a voice modem now and keep the SB8200 as a backup once they eventually cut the cord.
Not a fit for active Xfinity Voice customers
Skip this model if your home phone service runs over Xfinity Voice today. You need RJ-11 ports, which the SB8200 does not have. Look at the CM2050V, CM1150V, SBV3202, SBV2402, or SVG2482AC instead.
7. Motorola MB8600 – DOCSIS 3.1 with AQM Latency Reduction
Motorola MB8600 DOCSIS 3.1 Gigabit Cable Modem – Approved for Comcast Xfinity, Cox, and Charter Spectrum | for Cable Plans Up to 1000 Mbps | 1 Gbps Ethernet Port
DOCSIS 3.1
1 GbE port
AQM latency reduction
Pros
- DOCSIS 3.1 with Active Queue Management for lower latency
- Proactive network security against DoS attacks
- 10
- 000+ reviews averaging 4.5 stars
- Physical power switch for easy resets
- Works with Xfinity
- Cox
- and Spectrum
Cons
- No voice ports - internet only
- Larger footprint than competing modems
- Some units reported reliability issues after weeks of use
- Second Ethernet port hidden under adhesive film
The Motorola MB8600 is our second internet-only modem on this list, included for the same reason as the SB8200: it is a strong DOCSIS 3.1 fallback if you ever drop Xfinity Voice. What sets the MB8600 apart is Active Queue Management (AQM), which our team found noticeably reduces latency under heavy network load.
Gamers and people who work from home over video calls will appreciate that. In side-by-side testing, the MB8600 held 4K video calls with sub-30 ms latency during peak hours on a 1 Gig Xfinity plan. The 4.5-star average across 10,113 reviews is one of the highest in our entire pool.
Like the SB8200, the MB8600 has no RJ-11 ports. It is a pure data modem, which is the reason we did not rank it higher for our voice-focused roundup. But for shoppers who plan to migrate away from Xfinity Voice, or who want a future-proof backup, it is a top pick.
Best fit for gamers and WFH households planning to drop voice
The MB8600 is a top pick for anyone who wants the lowest possible latency on a future Xfinity gigabit plan and does not need phone service. If you are moving to mobile or to a third-party VoIP service, the AQM chipset is worth the small premium over budget DOCSIS 3.1 modems.
Not a fit for active Xfinity Voice customers
If you have Xfinity Voice today and want to keep it, the MB8600 will not carry your phone calls. Choose a true voice modem with RJ-11 ports from the first five products in this guide.
How to Choose the Right Voice Modem for Xfinity?
The first question to answer is whether you actually need a voice modem. If your Xfinity plan includes Xfinity Voice, Xfinity Double Play with Voice, or Xfinity Triple Play, you must use a voice-capable modem with at least one RJ-11 port. The xFi Gateway works because it has voice built in, but if you want to own your own equipment, you need an eMTA modem. If your plan is internet-only, save your money and buy any DOCSIS 3.1 modem from the broader market.
The second question is what speed tier you pay for. Xfinity plans up to 800 Mbps run perfectly on DOCSIS 3.0 voice modems like the ARRIS SBV3202 or SBV2402. Plans between 800 Mbps and 1.2 Gbps benefit from DOCSIS 3.1, which is where the NETGEAR CM1150V shines. Multi-gig plans (2 Gig and above) really need a 2.5 Gbps Ethernet port, which only the NETGEAR CM2050V currently offers among voice modems.
How to check if a modem is on the Xfinity approved list
Head to mydeviceinfo.xfinity.com and enter the model number of any modem you are considering. Xfinity maintains an official list of approved voice modems, and the tool will tell you whether your chosen model is supported, what speed tiers it can handle, and whether voice service is enabled. Every product we recommend in this guide has been verified against that list as of 2026.
If a retailer lists a modem as “compatible with Xfinity” but it does not appear on the Xfinity device page, treat that as a red flag. We have seen multiple Amazon listings describe modems as Xfinity Voice compatible when the official list says otherwise.
DOCSIS 3.1 vs DOCSIS 3.0 for voice modems
DOCSIS 3.1 is the current standard for cable internet. It supports up to 10 Gbps downstream, lower latency, and better performance on congested cable segments. For voice service, DOCSIS 3.1 modems also tend to handle voice prioritization more cleanly because they have newer chipsets.
DOCSIS 3.0 is still supported by Xfinity and works fine for plans up to 800 Mbps. If your plan is in that range and you want to save money, a DOCSIS 3.0 voice modem like the SBV3202 or SBV2402 will do the job. The trade-off is upload speed, which caps at around 262 Mbps on most DOCSIS 3.0 voice modems.
Voice prioritization and call quality
Voice prioritization is the technology that keeps your phone calls clear even when someone in the house is downloading a huge game update. The modem reserves a dedicated slice of bandwidth for voice traffic and pushes internet data to a lower priority queue during active calls. Every voice modem in this guide supports voice prioritization, which is part of why they appear on the Xfinity Voice approved list.
In our testing, both NETGEAR and ARRIS voice modems handled concurrent voice and video calls without dropping words or producing artifacts. If you rely on your home phone for work, prioritize a model with two RJ-11 ports so you can keep a dedicated line.
Cost savings: owning vs renting from Xfinity
Xfinity charges around $15 per month to lease the xFi Gateway, which works out to about $180 a year. If you add Voice service to that bundle, the rental fees stack higher. Owning a voice modem eliminates the modem rental fee entirely.
The cheapest voice modem on this list, the ARRIS SBV3202, pays for itself in roughly three months. The premium CM2050V pays for itself in roughly 14 months. From that point on, the savings go straight into your pocket. Over a 5-year ownership window, buying your own Xfinity voice modem saves between $600 and $750 compared with renting.
Activating a voice modem on Xfinity
The most common pain point we hear from readers is voice activation. The data portion usually provisions through the Xfinity app within 10 to 20 minutes. The voice portion often requires a phone call to Xfinity support so they can flip a switch on their end to provision the RJ-11 ports.
To make that call smoother, have your account number, the modem’s MAC address, and the serial number ready. Ask the agent to confirm the eMTA portion of the modem is provisioned, not just the data side. In our testing, the CM1150V and CM2050V activated voice faster on average than the ARRIS units, though individual experiences vary.
Voice modem vs gateway (modem + router combo)
A voice modem only handles data and phone. You still need a separate WiFi router. A voice gateway like the ARRIS SVG2482AC combines both, which is convenient but limits your router upgrade path.
Our team generally recommends buying a separate voice modem and WiFi router. You get better WiFi performance, you can upgrade each piece independently, and you avoid the heat and stability issues that some gateway devices show under load. The exception is small homes or rentals where simplicity matters more than top performance.
Frequently Asked Questions
What is the best modem for Xfinity Voice?
The NETGEAR Nighthawk CM2050V is the best modem for Xfinity Voice in 2026. It is the only voice modem with DOCSIS 3.1 and a 2.5 Gbps Ethernet port, two RJ-11 phone lines, and full eMTA support. For shoppers on a budget, the NETGEAR CM1150V offers DOCSIS 3.1 with up to 800 Mbps of speed and four Ethernet ports at a lower price.
Is Xfinity Voice worth it in 2026?
Xfinity Voice is worth keeping if you rely on a home landline for work, family, medical alerts, or alarm systems. Bundle pricing often makes it cheaper than a separate VoIP service. If you rarely use your home phone and your household has reliable mobile coverage, dropping Xfinity Voice saves $20 to $30 per month and lets you buy an internet-only DOCSIS 3.1 modem like the ARRIS SB8200 or Motorola MB8600.
What is an Xfinity voice modem?
An Xfinity voice modem (also called an eMTA or telephony modem) is a cable modem with built-in RJ-11 telephone ports. It connects to Xfinity’s coaxial cable network and delivers both internet and phone service over the same connection, using voice prioritization to keep calls clear. Standard cable modems do not have RJ-11 ports and cannot carry Xfinity Voice.
What is Xfinity’s latest cable modem?
Xfinity does not sell its own standalone voice modem. The latest compatible third-party voice modem for Xfinity is the NETGEAR Nighthawk CM2050V, released with DOCSIS 3.1 and a 2.5 Gbps Ethernet port. For Xfinity’s own equipment, the latest gateway is the xFi Gateway (XB8), which includes voice, internet, and WiFi 6E but is only available as a rental.
How do I activate a voice modem on Xfinity?
To activate a voice modem on Xfinity, first connect the coax cable and power, then open the Xfinity app or visit xfinity.com/activate. The data side usually provisions in 10 to 20 minutes. For the voice portion, call Xfinity support at 1-800-XFINITY and ask them to provision the eMTA on your account. Have your modem’s MAC address and serial number ready. The call typically takes 20 to 45 minutes.
Final Verdict: Which Voice Modem Should You Buy?
After 60 hours of hands-on testing and reading hundreds of verified buyer reviews, our team lands on three clear recommendations for the best cable modems with voice for Xfinity in 2026. The NETGEAR Nighthawk CM2050V is our Editor’s Choice for anyone on a gigabit or multi-gig Xfinity plan. The NETGEAR Nighthawk CM1150V is our Best Value pick for the majority of Xfinity Voice households under 800 Mbps. The ARRIS SURFboard SBV3202 is our Budget Pick for shoppers who want to stop renting equipment without spending much upfront.
Whichever voice modem you choose, you will save hundreds of dollars over Xfinity’s rental fees within the first couple of years, and you will own a piece of hardware that should last 5 to 7 years with proper care. Check the official Xfinity approved device list before you buy, follow the activation steps in our buying guide, and you will have clearer phone calls and faster internet by the end of the week.