---
product_id: 621803887
title: "Surfboard T25 DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 2 Telephony Ports, 800 Mbps Max with Xfinity Internet Plans,Black"
brand: "arris"
price: "₨3359"
currency: SCR
in_stock: true
reviews_count: 5
category: "Arris"
url: https://www.desertcart.sc/products/621803887-surfboard-t25-docsis-3-1-gigabit-cable-modem-comcast-xfinity
store_origin: SC
region: Seychelles
---

# DOCSIS 3.1 tech - 10x faster speeds Dual telephony ports for voice Two 1 Gbps Ethernet ports Surfboard T25 DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 2 Telephony Ports, 800 Mbps Max with Xfinity Internet Plans,Black

**Brand:** arris
**Price:** ₨3359
**Availability:** ✅ In Stock

## Summary

> 🚀 Surf the future with ARRIS T25 — speed, voice, and savings in one sleek package!

## Quick Answers

- **What is this?** Surfboard T25 DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 2 Telephony Ports, 800 Mbps Max with Xfinity Internet Plans,Black by arris
- **How much does it cost?** ₨3359 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/621803887-surfboard-t25-docsis-3-1-gigabit-cable-modem-comcast-xfinity)

## 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

- • **Integrated Voice Support:** Stay connected with two telephony ports supporting Xfinity Voice—crystal-clear calls without extra hardware clutter.
- • **Save Big, Own Your Modem:** Cut rental fees and save up to $168/year by owning your modem—smart investing for savvy professionals.
- • **Blazing Fast Connectivity:** Experience ultra-low latency and speeds up to 1 Gbps with cutting-edge DOCSIS 3.1 technology—future-proof your home network.
- • **Dual Gigabit Ethernet Ports:** Seamlessly connect multiple high-speed devices without bottlenecks, perfect for work-from-home setups and streaming marathons.
- • **Effortless Setup & Compatibility:** Plug, activate via the SURFboard Central app, and enjoy instant compatibility with Xfinity Internet & Voice plans up to 800 Mbps.

## Overview

The ARRIS Surfboard T25 is a DOCSIS 3.1 cable modem designed for Xfinity Internet & Voice users, delivering gigabit speeds up to 1 Gbps with two Ethernet ports and dual telephony ports. It offers a cost-effective alternative to rental modems, supports plans up to 800 Mbps, and features easy app-based setup for seamless integration into your home network.

## 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.

Review: Solid modem - 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.
Review: Solid performing modem, with just a couple of initial glitches - I've had this modem for a couple of months now and it has been performing great, consistently able to get the maximum bandwidth for my plan from Xfinity (350Mb/s). (I'm sure it will perform to deliver gigabit speeds if the internet plan allows that as well, but I just haven't personally seen that.) No outages*. It was very easy to install, just hooked up the coax cable from Xfinity to it, and the Ethernet cable from it to my router. I started on the Xfinity web app for finishing the provisioning and set-up but unfortunately Xfinity had some bad data on my account, the app showed a modem that was from years ago, not the one I was replacing with this, so it kept throwing errors when I tried to go through the steps to provision the new one. So I did have to call Xfinity on my phone and complete the provisioning that way. It was quite easy, just 5 minutes on the phone, gave the tech the cable modem id number and it was up and running shortly thereafter. (*) I am giving this 5 stars despite an initial couple of glitches with it. In the first 2 days that I had the modem, it twice turned off by itself and, strangely, would not turn on again until I disconnected all cables, and then reconnected them, and then turned on the power. (Until I disconnected the cables and reconnected them, simply trying to toggle the power caused the LED lights to flash a few times and then stop.) This was very annoying but it only happened those two times and has not happened at all in all the time since then that I've had the modem and it has performed with rock-solid stability. I'm not sure what those glitches were caused by, possibly some provisioning issue at Xfinity still settling down? Or else just a total coincidence and some other event (power spikes or static discharges somewhere happened at those times? Regardless, since it has been performing without any problems at all for an extended period now, I feel sure enough to give this a 5-star rating.

## 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 & Voice Service. Preset Wi-Fi Security: No.Voltage: 100240 Volts
- 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.
- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07MGPPNZD |
| Box Contents | Power Supply |
| Brand | ARRIS |
| Brand Name | ARRIS |
| Colour | Black |
| Compatible Devices | IOT devices, Personal Computer, Tablet, cell phone, firestick, iPhone, streaming devices |
| Compatible devices | IOT devices, Personal Computer, Tablet, cell phone, firestick, iPhone, streaming devices |
| Connectivity technology | Coaxial Cable, Ethernet |
| Customer Reviews | 4.1 out of 5 stars 1,673 Reviews |
| Data Transfer Rate | 1000 Megabits Per Second |
| Global Trade Identification Number | 00612572215845 |
| Internet Service Provider | Xfinity |
| Internet service provider | Xfinity |
| Item Dimensions L x W x H | 6.8L x 18.2W x 26.8H centimetres |
| Item Type Name | Xfinity Voice Cable Modem |
| Manufacturer | CommScope |
| Manufacturer Part Number | T25 |
| Maximum Downstream Data Transfer Rate | 1000 Megabits Per Second |
| Maximum Upstream Data Transfer Rate | 1000 Megabits Per Second |
| Model Number | T25 |
| Modem Type | Cable |
| Network Connectivity Technology | Coaxial Cable, Ethernet |
| Number of Ethernet Ports | 4 |
| Number of Ports | 4 |
| Product dimensions | 6.8L x 18.2W x 26.8H centimetres |
| UPC | 612572215845 |

## Product Details

- **Brand:** ARRIS
- **Internet service provider:** Xfinity
- **Connectivity technology:** Coaxial Cable, Ethernet
- **Compatible devices:** IOT devices, Personal Computer, Tablet, cell phone, firestick, iPhone, streaming devices
- **Product dimensions:** 6.8L x 18.2W x 26.8H centimetres

## Images

![Surfboard T25 DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 2 Telephony Ports, 800 Mbps Max with Xfinity Internet Plans,Black - Image 1](https://m.media-amazon.com/images/I/71znKIOnPhL.jpg)
![Surfboard T25 DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 2 Telephony Ports, 800 Mbps Max with Xfinity Internet Plans,Black - Image 2](https://m.media-amazon.com/images/I/51qLvoTb8OL.jpg)
![Surfboard T25 DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 2 Telephony Ports, 800 Mbps Max with Xfinity Internet Plans,Black - Image 3](https://m.media-amazon.com/images/I/71G34O0dH0L.jpg)
![Surfboard T25 DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 2 Telephony Ports, 800 Mbps Max with Xfinity Internet Plans,Black - Image 4](https://m.media-amazon.com/images/I/51cgpe5C2EL.jpg)
![Surfboard T25 DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 2 Telephony Ports, 800 Mbps Max with Xfinity Internet Plans,Black - Image 5](https://m.media-amazon.com/images/I/71uY-OZkYRL.jpg)

## 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 3 November 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.

### ⭐⭐⭐⭐⭐ Solid performing modem, with just a couple of initial glitches
*by S***P on 22 January 2021*

I've had this modem for a couple of months now and it has been performing great, consistently able to get the maximum bandwidth for my plan from Xfinity (350Mb/s). (I'm sure it will perform to deliver gigabit speeds if the internet plan allows that as well, but I just haven't personally seen that.) No outages*. It was very easy to install, just hooked up the coax cable from Xfinity to it, and the Ethernet cable from it to my router. I started on the Xfinity web app for finishing the provisioning and set-up but unfortunately Xfinity had some bad data on my account, the app showed a modem that was from years ago, not the one I was replacing with this, so it kept throwing errors when I tried to go through the steps to provision the new one. So I did have to call Xfinity on my phone and complete the provisioning that way. It was quite easy, just 5 minutes on the phone, gave the tech the cable modem id number and it was up and running shortly thereafter. (*) I am giving this 5 stars despite an initial couple of glitches with it. In the first 2 days that I had the modem, it twice turned off by itself and, strangely, would not turn on again until I disconnected all cables, and then reconnected them, and then turned on the power. (Until I disconnected the cables and reconnected them, simply trying to toggle the power caused the LED lights to flash a few times and then stop.) This was very annoying but it only happened those two times and has not happened at all in all the time since then that I've had the modem and it has performed with rock-solid stability. I'm not sure what those glitches were caused by, possibly some provisioning issue at Xfinity still settling down? Or else just a total coincidence and some other event (power spikes or static discharges somewhere happened at those times? Regardless, since it has been performing without any problems at all for an extended period now, I feel sure enough to give this a 5-star rating.

### ⭐⭐⭐⭐ *** Update - Stability Improved
*by G***E on 27 February 2020*

*** Update 3 *** stability has been consistent since my last update below. I am more inclined to recommend the modem now for someone looking to get of rental fees with their ISP. *** Update 2 *** After reaching out to Comcast most recently (Nov 2020) I found that they installed a new mainline. Modem has become more stable and has not dropped as previously experienced. Will update should things revert *** UPDATE *** May 2020 - the T25 has started to go off line late at night. This requires a power cycle in order to restore connectivity. This latest issue, coupled with the Tel Line Port 1 resulted in a call to tech support. The 1st thing Arris brought to my attention was the modem was out of warranty. Interesting seeing as I have only had it for 3 months. They requested Proof I’d Purchase which I provided. I then waited for a response and received none. When I emailed them to follow up they replied that I needed to call them again. 2 attempts and waiting on hold for over 15 min with no contact. At this point I DO NOT Recommend Arris products. Reliability and non responsive support have earned 1 Star. —————————— For now, 3 Stars. Out of the box straight forward. Connect Cables and power up. Comcast was needed to provision. Not certain where the issues were but the online activation failed. Once provisioned phone line did not work. Waited a day and activated again online (this time it worked) and phone was now online. 4 days later phone would ring but line was dead. After 1 hr of troubleshooting switched from line 1 to line 2 port and problem fixed. If line 2 starts to fail, then it becomes a bigger issue. Speed wise, this is handling 950 Mbps with no issues. Will post updates if any major changes occur.

## 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 Seychelles*
*Store origin: SC*
*Last updated: 2026-08-15*