If you subscribe to Xfinity Voice home phone cable internet service, you need a voice modem.
This is a requirement, and there are no exceptions.
You can be sure that if you have a “land-line phone” with Comcast Xfinity Voice which is sometimes known as Triple Play or Xfinity Voice, then you must use an approved compatible voice modem with a phone jack such as the Motorola MT8733, ARRIS SVG2482AC, Motorola MT7711, Netgear C7100v Nighthawk, or ARRIS T25.
Now that you know if you have Xfinity Triple Play, there is no way around owning a compatible voice modem. So let’s help you find the best voice modem for your home. Sure, it may cost more upfront, but it will still save you money in the long run because you will no longer be paying the $14 monthly rental fees to Xfinity for using their xFi Gateway.
The good thing is the highly-rated Netgear C7100v is a combo modem router, meaning you do not have to purchase a separate wireless router; you get both in one device. A high-speed 24 downstream channel DOCSIS 3.0 EMTA voice modem and a powerful wireless gateway for Comcast Xfinity Triple Play Internet. It is far superior to the ARRIS SVG2482AC, but we have a much cheaper option below.
If you need DOCSIS 3.1 the Motorola MT8733 is the most powerful modem router with phone jacks.
First, the cheat sheet. A full chart containing all of the important factors for choosing a voice modem designed specifically to work with your Xfinity Triple Play package.
It is very important to understand that if a voice modem does not include a built-in wireless router, you will need to buy one separately to support your wireless devices in your home. This is why we give you both options for a modem only or a combo modem, so you may use what works best for your specific Xfinity Voice plan. Check out the distinct differences below.
Xfinity Voice Modem with built-in WiFI Router Combo
Why use a voice modem and WiFi router in one?
These voice modems have the built-in wireless routers, so you do not need to purchase anything extra. They come in a single device ready for both supporting your Xfinity Voice Phone Line, cable internet, and all wireless devices in your home.
| Model # | MT8733 | C7100V | MT7711 | SVG2482AC |
|---|---|---|---|---|
| Max Download | 2.5Gbps | 600Mbps | 600Mbps | 500Mbps |
| Wireless | AX6000 | AC1900 | AC1900 | AC1750 |
| DOCSIS | 3.1 | 3.0 | 3.0 | 3.0 |
| Channel Bonding | 32×8 | 24×8 | 24×8 | 24×8 |
| Chip Set | Broadcom | Broadcom | Broadcom | Puma 6 |
| Phone Jacks | 2 | 2 | 2 | 2 |
| USB Ports | 0 | 2 | 0 | 0 |
| Amazon | Price  | Price | Price | Price |
- Motorola Mt8733: DOCSIS 3.1 Best for Gigabit 2.5Gbps – Wifi 6
- Netgear C7100V: DOCSIS 3.0 Best for under Gigabit plans up to 600Mbps – Wifi 5 AC1900
- Motorola MT7711: DOCSIS 3.0 Pretty even with C7100V but slightly cheaper – WiFi 5 AC1900
- ARRIS SVG2482AC: DOCSIS 3.0 Has Puma 6 chip, not recommended. See Bad Modem List
Triple Play Voice Modem With Phone Jack ONLY
You will need your own router (House Size Router Buying Guide)
ARRIS T25: Fast 800Mbps standalone voice modem. Amazon
Netgear CM500V: Cheap standalone voice modem. Amazon
Netgear CM1150V: Best possible voice modem. Amazon
The CM500v paired with a cheap router is a much better deal than the C7100v combo. We suggest this if you have speeds of 200Mbps or less.
DOCSIS 3.1 Gigabit Voice Modem
Note that the C7100v modem is not approved for speeds over 500Mbps. If you have Comcast Gigabit speeds and a Triple Play voice package, you are required to get a DOCSIS 3.1 modem with voice. This would be the Netgear CM1150V. The problem is that is a standalone modem only, so you will still need to buy your own router.
What if I am not using the voice line? Do I still need a voice modem?
Yes, you do. I called Comcast myself, and the bottom line is if you have Xfinity Triple Play– whether you use it or not– you need the voice modem with a phone jack. I have had readers also report that they tried, and Comcast would not let them use a normal DOCSIS 3.0 modem.
Is a voice modem my only option?
If you have Comcast Voice Triple Play, then yes. You must use one of the two telephony-compatible voice modems. Your options are very limited, but the Netgear C7100v is a solid DOCSIS 3.0 EMTA modem, meaning it is fast enough for Comcast packages all the way up to Extreme, Comcast Blast, and Performance. Get the best internet speeds Comcast offers, and they have a built-in Wireless AC router. Which one would we recommend? The Netgear C7100V, no doubt. See the differences below in the comparison chart.
Motorola MT7711 Vs Netgear C7100v
Here’s where the going gets tricky. On one hand, you have the much cheaper and newer Motorola MT7711, and on the other hand, you have the older time-tested Netgear C7100V. Which one works best for you? Cheaper? Or one with added features?
While the Netgear C7100v is the clear winner as far as features go, the Motorola MT7711 is cheaper and will perform the same as the Netgear. The truth is, the Netgear really only has one solid thing going for it, USB ports. Now is that worth about an extra hundred bucks? To some, yes. For me, it is a requirement that my router has USB ports for a print server / external backup drive on my network.
But let’s be real, that is not going to be necessary for 90% of home users. So here we are, you and me, face to face with a final answer. You will want to get the Motorola MT7711 and save yourself some money. If you’re not a network nerd and you just want a cheap working device, you’ve found your modem.
- Broadcom Chip
- USB Ports
- Wireless AC1900
- Better GUI
- Much More Expensive
- It’s Netgear
- Broadcom Chip
- No USB Ports
- Wireless AC 1900
- ARRIS GUI
- Much Cheaper
- It’s Motorola
Arris SVG2482AC vs Netgear C7100V
It’s almost not worth bringing the ARRIS into the battle, but many of you want information on this unit because it is one of the top retail modems. But what none of them tell you is, it has a bad chip.
Because of this, in any given situation, I would pick the Netgear C7100V over the Arris SVG2482AC. The C7100v has a Broadcom chip while the ARRIS SVG2482AC has the flawed Puma 6 chip and is on the list of bad modems. This is pretty big because even after they released a firmware update, users are still reporting latency spikes and internet slowdowns. Making the very popular ARRIS voice modem not an option.
But even if the ARRIS SVG2482AC did not have a bad Puma 6 chip, it would lose this battle for many reasons. One, the Netgear C7100v is a faster combo modem/router, it has built-in USB ports for network storage, and the battle-tested Netgear GUI and firmware. Yes, the ARRIS SVG2482AC voice modem may have two physical USB ports on the back of the modem, but they are not for your use. They are for service technicians and will not host an external hard drive or printer. The firmware just isn’t supporting it. I consider this a huge flaw. They make no claims of the device even having USB ports in their marketing, yet they are there for service techs. This is the sole reason why I would get the Netgear C7100V. I love my network storage and backup. Rest easy. Never lose a photo or document.
The USB ports are not the only enhancement with the Netgear C7100V. As you can see, it has a slightly higher wireless throughput, which may be unnoticeable if at all noticeable, so do not let your decision ride on that. If you’ve ever owned a Netgear Nighthawk router before, you’ll be familiar with the Nighthawk built-in software, and I do prefer it over Arris’s GUI. That’s pretty much the consensus with most people in tech. So when it comes down to the higher cost, you have to ask yourself, do you need USB ports, want a better GUI / firmware, and care about a small speed increase that you can’t even notice unless you’re transferring large files over your local network? For me, the answer is yes.
- Broadcom Chip
- USB Ports
- Faster Wireless
- Better GUI
- It’s Netgear
- Puma 6 Chip
- No USB Ports
- Slower Wireless
- ARRIS GUI
- It’s ARRIS
Netgear CM500V Vs CM1150V Gigabit Voice Modem
You would get either of these if you wanted to use your own router.
You may think these modems compare, but they are in two completely different categories regarding technology, standards, and performance. We’ll keep this very simple.
CM500V: Only good for speeds up to 200mbps.
CM1150V: Newest technology, DOCSIS 3.1 and the only way to get Gigablast speeds.
- Broadcom Chip
- DOCSIS 3.0
- Max Speed 200Mbps
- Can Use Own Router
- Broadcom Chip
- DOCSIS 3.1
- Max Speed 1Gbps
- Can Use Own router
Best Xfinity Voice Modem Conclusion
The obvious conclusion is if your heart is set on a combo modem router, get the Netgear C7100v Xfinity voice modem. It is undoubtedly the winner between it and the ARRIS SVG2482AC. No competition when it comes to EMTA modems. But if you want the cheaper modem without USB ports, the Motorola MT7711 was just released and just for you.
If you want to use a separate router, as we prefer, then get the standalone Netgear CM500v voice modem and a wireless router of your choice. But nothing below AC1750.
I have had the Netgear C7100V router and Comcast triple play for several years and have not had problems. Over the years, I have connected to my wireless a Nest thermostat, a Nest smoke detector, a smart refrigerator and smart light bulbs. Between my wife and I, we have two cell phones, one note pad, two laptops and a tower computer. I wanted to get VPN today and subscribed with NORD only to learn that the Netgear C7100V is not compatible with their easy setup Nord Express and worse news was that the Netgear C7100V is not compatible with DD-WRT even if I was brave enough to flash my router. I hope Netgear comes up with a solution that permits me to easily install VPN to their router because I have no intention of dropping Comcast triple play.
Just curious if I wanted to use Nighthawk (Netgear) products…how would you setup a gaming rig with a separate router and separate modem system having Comcast. I hear not having a combo modem/router is overall a better setup.
I agree and would go for the separate modem and router.
You would want the Netgear CM500V above and your router of choice.
I have linked some routers as well in the ASUS family.
Comcast does not require a telephone modem with triple play if you do not intend to use the phone option!
Comcast themselves has confirmed this over the phone with me on several occasions and we have had several readers confirm this as well.
However, you and maybe 2 others have said that you do not need a telephony modem.
If you buy a non eMTA modem, you are doing so at your own risk. Contact Comcast before making this decision.
To my understanding the reasoning behind this is legal and the account will not allow the activation of a non voice modem because of legal risk, they can not provide you with a telephone service that does not work even if you do not want it to work. So you must have a modem to enable it.
Again, call your Comcast sales agent and ask before taking this advice because I myself have confirmed and several others have too. But again, I’ve seen 3 people say that you do not need a telephone modem. The lines are crossed at Xfinity somewhere.
What about the new Netgear CM500V as an option if you do not need the built-in wi-fi router? It is listed in the chart on the Xfinity website and has more channels and much higher speed (500 Mbps vs 100) than the Arris TM822R. Plus they are priced within $10 of each other on Amazon. The Netgear looks like a much better pick than the Arris.
Yes, it is never in stock though so they seem to be having supply issues.
I also subscribed to Triple Play for the bundle price discount and am not using the voice service and have continued to use my prior non-voice capable modem. You do NOT need to change your modem if you do not intend to have a Comcast cable land-line.
It is simply not true that if you have triple play you MUST use a voice enabled modem/router. I have X1 triple play and don’t use the phone. I have a TP link combo modem. It does not have a phone jack and I had no problem activating it on Xfinity. It took one short phone call to 1-800-comcast and it was up and running.
So are you just using the phone services with possibly the mobile app / pc, (without connecting a phone to the TP)?
And / or is your phone a digital phone that connects to a TP ethernet port or via WiFi?
Or is your phone an analog phone using an analog telephone adapter (ATA) (RJ11 to RJ45), converting analog to VOIP and vice versa?
I require an analog phone line that includes an analog fax and home security, and right now using a RJ11 connection to a voice port. I purchased an eTMA modem. Could I have done this without an eTMA modem still supporting my analog phone requirements? My impression from Comcast is they don’t support ATA for my needs, and required eTMA.
I’m just not using the phone feature at all. We have 5 cell phones in this house so the landline is superfluous. The only reason we have triple play is that it automatically came with the package that we wanted and got a deal on. We are not paying extra for the phone. If you need a landline then yes, you probably should buy one of the approved modems, but to say you have to (if you’re not using the phone) is incorrect.
I was told by several Comcast sales reps and have had many of our readers confirm that you must use an eMTA phone modem if you have Xfinity voice service, whether or not you use the phone line. However I have had 2 readers say they were able to do it without a voice modem while others had to return their non eMTA cable modem.
There is one other feature to consider – RDK-B.
I get the USB ports are not taking advantage of at this point, and the Arris GUI is lacking. However, could Arris or possibly Comcast address these features through updates. After all, the Arris modem does support the open standard RDK-B technology which gives even Comcast the ability to provide feature updates. The NetGear does not support RDK-B.
I currently have a Motorola Cable, Netgear Router and a Xfinity’s Arris TG1682 (for voice and $10 per month), does the Netgear 7100V replace all of these into one? If so, is there any signal degradation or performance issues?
That’s the one voice combo modem that will replace both old devices and have more download channels with a higher wireless throughput. You should notice a great improvement in wireless coverage.
I was leaning toward the Netgear for the reasons you outlined, until I noticed quite a few BestBuy reviews mentioning a similar problem with signal dropout requiring reset multiple times within a months time. A couple mentioning returning the unit and falling back to the Arris without difficulty. I realize there will always be some outliars, but the pattern of similar difficulties has me questioning their QA/firmware for this model. What have you heard?
I have not heard any complaints along those lines. The ASUS routers will have this problem if you do not update the firmware. Maybe the same with Netgear? You should pretty much always update your firmware right away because there is always something more stable than the initial release package.
What is the best option if you already have a wireless router? Just got a Netgear Orbi, not looking to spend more for wireless. Would love a high speed option sans wireless.
Hey Ray, I just updated the article to reflect a non combo voice modem option, the standalone modem if you currently own your own router. I added a whole section and put it in the comparison chart.
Thank you for simplifying the comparison between these two voice modem router options from Comcast. Based on your summary, the Netgear C7100V is definitely the way to go.
what about the Arris TG862G?
It is less expensive and still carries 200mbps.
I personally would not buy anything wireless N. That is yesteryears technology and I have too many high speed devices that rely on a strong wireless AC signal. The reviews are also pretty bad as you can see.
The ARRIS plain as day looking at the pictures of the back has 2 USB ports. So the only difference is the wireless AC speed.
I guess I need to update and explain. Those USB ports serve no purpose. The firmware will not let you plug in an external drive or a printer. It is for the factory and kind of a huge flaw really.