Highlights
Key Specs
Internet Service Provider (ISP) CompatibilityXFINITY from ComcastDOCSIS Certification3.1Number of LAN Ports2
General
Product NameSURFboard DOCSIS 3.1 Cable Modem for Xfinity Internet & VoiceBrandARRISModel NumberT25ColorBlackColor CategoryBlack
Certifications & Listings
DOCSIS CompliantYes
Speed
Wired Speed1000 megabits per secondGigabit Ethernet SpeedYes
Dimension
Product Height10.1 inchesProduct Length10.3 inchesProduct Width3.3 inchesProduct Weight0.5 pounds
Warranty
Manufacturer's Warranty - Parts2 yearManufacturer's Warranty - Labor2 years
Other
Modem TypeHigh speedUPC612572215807
Get a perfect compliment to your Wi-Fi router with this Arris SURFboard T25 cable modem. Two Gigabit Ethernet ports allow for fast connection speeds to Wi-Fi routers or other wired devices, and dual telephony ports provide convenient digital voice support. This Arris SURFboard T25 cable modem can bond to two upstream and two downstream DOCSIS 3.1 channels to help achieve true gigabit download speeds.
DOCSIS 3.1 technology
For use with your existing setup.
Gigabit Ethernet connectivity
Makes it easy to connect to your home network.
Compatible with XFINITY Voice and Internet Service
Certified to work with Internet provider Xfinity.
Note: Ask your cable company if they support DOCSIS cable modems. DOCSIS (Data over Cable Service Interface Specification) is the industry standard for cable-based Internet access service
What's Included
Arris SURFboard DOCSIS 3.1 Cable Modem
Search
Q: QuestionDoes this work with Optimum ? Will the Voip telephony work with the Optimum service?(3 answers)
A: AnswerThis IS NOT. working with Optimum voice. I have been on the phone all weekend trying to get it to work. How did you get it to work?Answered by Sally
Q: QuestionDoes this modem have WiFi built in(4 answers)
A: AnswerThis modem does not have a built in wifi.Answered by CommunityAnswer
- A: AnswerThe Cable Operators (MSOs) have complete control of what cable modem/gateway hardware they will allow installed and the firmware it uses, on their cable plant. This means anything directly connected to the cable plant (COAX) in your house. They do this to ensure that nothing happens to anyone upstream from your connections. Cable Operators follow the DOCSIS Specifications that control this methodology of firmware upgrades as well as providing security for the firmware upgrades. Cable Operators also run both the products and firmware through their own test cycles to approve any manufacturers’ modems, wireless gateways, and the associated firmware updates for deployment. This is not an ARRIS only implementation, but the required implementation of any cable device manufacturer. After an MSO has tested and approved a new version of firmware for a cable device, they will then “push” that new firmware out to the devices.
Answered by ARRIS SURFboard Team
- A: AnswerI returned mine, it would disconnect daily, it still uses the puma chipset
Answered by mfmayes49
Q: QuestionDoes this modem work with Spectrum cable?(2 answers)
A: AnswerIf you have a cable internet service. YesAnswered by Zenidine
- A: AnswerNo, this device is not compatible to work with Optimum's internet service but instead is only compatible to work with Comcast Xfinity's internet service
Answered by ARRIS SURFboard Team
- A: AnswerNo, this device is compatible to work only with Comcast Xfinity's services, it won't work with Cox's subscription
Answered by ARRIS SURFboard Team
- A: AnswerUnfortunately, Mediacom does not allow us to sell voice modems directly to consumers. You will need to get your modem through them. If you change your plan in the future and do not require voice service, any ARRIS SURFboard modem will work with Mediacom.
Answered by ARRIS SURFboard Team
ARRIS - SURFboard DOCSIS 3.1 Cable Modem for Xfinity Internet & Voice - Black
4 payments starting at
$57.25
with
Shipping
Have everything you need?
See other items that work well with this one.
- Plus
- Plus
- Plus
Reviews
Rating 4.4 out of 5 stars with 512 reviews
4.4Rating by feature
- 4.6Connection Quality
Rating 4.6 out of 5 stars
- 4.6Performance
Rating 4.6 out of 5 stars
- 4.4Setup
Rating 4.4 out of 5 stars
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Rated 5 out of 5 stars
Great Modem from ARRIS!!!!
This modem was exactly what I was looking for and I love the look of it as well as how the lights on the front aren’t super bright either. Runs pretty cool and gets me more than enough speed. I have a 600 MB plan and when doing an Xfinity speed test connected directly to my Linksys router, I actually get over 600 MB with the test. On my phone, I get up to 450 MB with an iPhone 11 Pro, Downloading anything is even faster now and much smoother no matter the file size. Setting up the modem was also relatively easy. At least for me, I was able to set it up through the Xfinity app without having to talk to anybody at all. There are 2 gigabit outputs on the back and the second one you do have to contact xfinity to get it activated. But at the moment, I have enough hook ups with my router so I didn’t bother with that yet. Also I don’t have an actual phone to hook up to it yet, but the phone icon is lit up on it and I have a phone number which it shows through the app, so I’m assuming I’m all ready to go if I want to hook a phone up to it. So it’s nice to know I have that option now if I ever need it. I don’t currently work from home, so I don’t need it at the moment. Definitely recommend though and worth the money. It’s also 3.1 DOCSIS so at least you’ll be set for awhile with this one even if you don’t need it right now. It will get you all the speed you need and comes with 2 VOIP phone jacks and 2 Gigabit ports which is nice.
Posted by MusicFi117
Rated 5 out of 5 stars
So far, so good. Delivering on high speed!!
Ever since it was installed, there was a big difference in speed over my old router. It has been very solid performer with my Comcast Extreme Pro speed (600 Mbps).
Posted by SVTRACER
Rated 4 out of 5 stars
Difficult to establish service but rock solid
Difficult to establish Xfinity voice service, does not automatically set up with Xfinity as advertised, but once Comcast finally got it remotely configured with their system, rock solid, reliable, with excellent VOIP voice quality. I highly recommend, but you will have a 30+ minute service outage until Comcast gets it remotely set up. You also have two separate MAC addresses for the device - I apparently gave Comcast the wrong one which delayed my service.
Posted by AuroraBill
