---
product_id: 168273101
title: "T25"
brand: "arris"
price: "€ 22.49"
currency: EUR
in_stock: null
reviews_count: 3
url: https://www.desertcart.com.cy/products/168273101-t25
store_origin: CY
region: Cyprus
---

# DOCSIS 3.1 tech - 10x faster speeds Save $168/year - no rental fees Dual 1 Gbps ports - seamless multi-device T25

**Brand:** arris
**Price:** € 22.49
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Own your speed, own your savings—ARRIS T25 powers your digital life!

## Quick Answers

- **What is this?** T25 by arris
- **How much does it cost?** € 22.49 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/168273101-t25)

## Best For

- arris enthusiasts

## Why This Product

- Trusted arris brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Setup:** Plug, app-activate, and go—secure your network in minutes with SURFboard Central.
- • **Slash Your Bills:** Own your modem and cut up to $168 annually in rental fees—smart saving for savvy pros.
- • **Dual Gigabit Ports:** Connect multiple devices or voice lines simultaneously without compromising speed.
- • **Blazing-Fast DOCSIS 3.1:** Experience next-gen internet speeds up to 800 Mbps with cutting-edge cable tech.
- • **Xfinity-Approved Reliability:** Certified for Xfinity Internet & Voice plans, ensuring seamless compatibility and performance.

## Overview

The ARRIS SURFboard T25 is a DOCSIS 3.1 cable modem designed for Xfinity Internet and Voice users, delivering up to 800 Mbps speeds via dual 1 Gbps ports. It enables significant savings by eliminating rental fees, offers simple app-based setup, and supports multi-gigabit networking with enhanced security and reduced lag—perfect for professionals demanding reliable, high-speed connectivity.

## Description

Our leadership in video and broadband technology and services, combined with our dedication to close collaboration with our customers, allows us to continually stay ahead of the curve and innovate what's next. ARRIS is relentless in our focus to deliver strong results for our customers and our shareholders, and we do so in a forthright and ethical manner. ARRIS delivers a 70-year legacy of innovation. ARRIS invented digital TV & brought wireless internet into the home with the first cable modem gateway. We have a long track record of creating game-changing technology. We’re the same company that the world's leading service providers choose to connect millions of people around the world to the internet - we’re powering the digital world. ARRIS is at the center of a new era of entertainment and communication that unites our vision and technological leadership with our customers’ evolving needs to help transform the way that millions of people around the world connect to the internet and consume content. 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.

## Features

- 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 and 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 and 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 and Voice service and is approved for cable internet speed plans up to 800 Mbps.
- Xfinity cable modem 3.1 compatible internet computer networking modems approved docsis docis3.1 1 gig best for high speed with fiber optic gaming gigabit wifi 6 voice 2 telephony ports 800 mbps speed t 25 internet and voice plans

## Product Details

- **Brand:** ARRIS
- **Internet service provider:** Xfinity
- **Connectivity Technology:** Ethernet
- **Compatible Devices:** Personal Computer, Smartphone
- **Product Dimensions:** 2.68"L x 7.17"W x 10.55"H

## Images

![T25 - Image 1](https://m.media-amazon.com/images/I/71znKIOnPhL.jpg)
![T25 - Image 2](https://m.media-amazon.com/images/I/51qLvoTb8OL.jpg)
![T25 - Image 3](https://m.media-amazon.com/images/I/71G34O0dH0L.jpg)
![T25 - Image 4](https://m.media-amazon.com/images/I/51cgpe5C2EL.jpg)
![T25 - Image 5](https://m.media-amazon.com/images/I/71uY-OZkYRL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: does it work with Mediacom cable and voice service?**
A: No, T25 is compatible to work only with Comcast Xfinity's cable internet subscription

**Q: Does this model still use the Intel Puma chipset?**
A: It has the PUMA 7 chipset -> the 5,6 & 7 chipset are all vulnerable to the TCP issue -> but PUMA 6 is the most impacted by this issue. But you have to be targeted for it to be an issue and is only really a problem if you do "fast twitch" gaming activities while targeted.  A series of very many small TCP packets can be sent in a way that overwhelms the cable modem's buffers causing latency and jitter to spike to 100-150 ms while being targeted.  There is a test on DSL reports that will test this TCP vulnerability for the PUMA chipset. Intel (chipset owner -> they bought PUMA from Texas Instruments several years ago) they did come out with a patch for this issue after about a year of it being in the wild ->  my understanding is that the patch has been out since mid 2018 and should be pushed down to your modem by your ISP.

I bought this modem (T25) and after having it provisioned by COMCAST/XFINITY  -> I ran the TCP PUMA test and my modem passed without issue & performed just as well as the rental modem. 

You can buy this modem without issue or fear of this PUMA chipset issue...

Latency Test Results from PUMA TCP Test

35ms : x
36ms : xxxxxxxxxx
37ms : xxxxxxxxxxxxx
38ms : xxxxxxx
39ms : xxxxxx
40ms : xxxx
41ms : xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
42ms : xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
43ms : xxxxxxxxxxxxxxxxxxxxxxxxx
44ms : xxxxxxxxxxxxxxxxxxxxxxxx
45ms : xxxxx
46ms : x
47ms : xxxx
48ms : xxxxx
49ms : xx
50ms : x
52ms : x

**Q: my arris tm822r has battery backup, which is great for when power goes out. does this modem have a battery backup?**
A: No, T25 does not has the battery backup but you can use an external UPS power supply in case of power outages

**Q: does it work with cox cable and voice service?**
A: Cox has support for ARRIS / Surfboard TM3402 
here is a list. 
https://www.cox.com/residential/support/cox-certified-cable-modems.html
best bet is to call them and ask.
besides switching to gigablast and getting VoiP is a much better deal. you can actually save some $$ and get crazy speeds..

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solid modem
*by P***T on November 3, 2022*

I installed the Arris T25 modem about a week ago. It replaced an Arris Surfboard 6190. I bought the T25 to use Xfinity Voice which is part of my plan but which I never used. The modem has been operating since installation without any incidents. Internet download speeds went from 600Mbps to 900Mbps. The telephone line has performed perfectly.Installation was not as straightforward as I would have liked. Since I don't have an exceptionally strong cellular signal where I live I first tried connecting a laptop directly to the modem and using the Xfinity activate webpage from a browser. I got nowhere trying that. I always ended up back on a webpage that told me to download and use the Xfinity app on my smartphone. Despite the weak cell signal I decided to try the Xfinity app from my phone. Scroll down in the app to where it says, "Got new equipment to set up? Activate now." It worked fine. The app only asks for the modem's HFC MAC ID, not the MTA MAC ID. After a few minutes of watching the lights on the modem cycling the app reported that the modem was online and provided the telephone number assigned to it. That was it - internet working, telephone working, no call to Comcast required. I connected my Asus router to the modem and I was good to go.Update: A frequently asked question is whether the modem can be connected to extension phones in the home. The answer is yes. However, my first try wasn't successful. I connected the modem to a wall jack that's connected to all of the extension phones after first disconnecting the phones from my current landline supplier at their demarcation box. The phone light on the modem started blinking as if the line was in use, but it wasn't. The displays on my extension phones also showed "Line in Use." I disconnected the modem from the phone jack to think about what the issue could be. A few days later I tried again but this time thought to disconnect a printer/fax from its phone wall jack. All of the extension phones now worked perfectly. I'm not sure why the printer/fax would cause a conflict when it was not in use, but all of the extension phones are working fine now. I can live without the fax if I have to.Update March 14, 2024: I think it's helpful to update reviews after a product has been in use for some time. I've been using this modem for internet and phone since November of 2022, and its performance has remained absolutely solid. I have not had to reboot it once. Very happy.

### ⭐⭐⭐⭐⭐ Overall I'm pleased with the ARRIS T25...Comcast, not so much.
*by D***T on April 8, 2021*

Needed to up grade from my previous modem which was working well but getting a bit long in the tooth. The install was straight forward and pretty easy to activate my internet setup and connection....but trying to a get my phone activated was a real pain.Spoke with Comcast to verify my MTA and HCF mac address' and to get my dedicated phone line working, no problem. Comcrap wasn't able to get a dial tone after several attempts, so they suggested I contact the modem mfg. that it might be defective.So I called the mfg, they were very helpful with trying to help me resolve this issue, but in the end they said to just return it for a replacement, which I did.Got the second modem very quickly and installed it...same thing, no phone connection. Called Comcast and went through the whole thing again with them, they ended up telling me they were sending this to the next level of their tech support and would be back in touch in several days.....guess what, no call back after 3 days.Called Comcast back again for the 4th time and spoke to the first person from tech support that picked up the phone. Had a feeling this was going to go badly, but to my amazement she was able to do what 3 other calls to tech support couldn't, get my phone service, which is provided by them, connected.I can highly recommend the ARRIS T25, it is really easy to install, unless you have phone service from Comcast, it runs my max internet speed easily, is compatible with Comcast specs and will save you the $14/mo rental charge if you use a Comcast modem.Excellent product.... I hope this ARRIS model lasts as long as my previous one.A side note, this functions as a modem only with phone service, it's not a modem/router combo, so no WiFi. I use a separate router for my Wifi connections.

### ⭐ Issues from Day 1
*by 2***S on February 28, 2023*

This looked like a great modem, and I saw many positive reviews. I was replacing my Netgear CM500V because Xfinity upgraded my speeds all the way to 800Mbps for no extra charge. I was wrong about the whole thing.I got it, activated it, set it up with my Deco M3 system and it worked fine for a while. The M3 never properly accepted the modem change, showing an offline status. But, since I was still able to use the internet with Ethernet (and mostly Wifi), I thought nothing of it.Later that day, phone calls would frequently have drop-outs mid conversation and other quality issues would spark randomly. Additionally, I finally noticed that Wifi was being troublesome and the modem page (192.168.100.1) would frequently time-out and not let me view it. It would take 10 minutes to load a single page, not great when diagnosing something.I tried reactivating the modem with Xfinity, many reboots and factory resets later, I finally gave up.Turns out after googling, these modems still have the dreaded Puma chipset from Intel! Of course Arris hides this and doesn't show that anymore, but they still put them in regardless. There was never any hardware update to fix these issues with this flawed processer.I returned it after four days of endless troubleshooting and am not gonna bother replacing my modem for a while. My CM500V is still giving me solid speeds and reliability; I just wanted the extra tiny speed bump I was paying for. Little did I know that it would cause such pain.

## Frequently Bought Together

- ARRIS (T25) - Cable Modem - Fast DOCSIS 3.1 Gigabit Cable Modem , Comcast Xfinity Internet & Voice , Two 1 Gbps Ports, 800 Mbps Max with Xfinity Plan
- TP-Link AX1800 WiFi 6 Router V4 (Archer AX21) – Dual Band Wireless Internet Router, Gigabit Router, Easy Mesh, Works with Alexa - A Certified for Humans Device

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-04*