---
product_id: 548069305
title: "Arris (T25-RB) - Cable Modem - Fast DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 800 Mbps Max with Xfinity Plan - Renewed"
brand: "arris"
price: "72.24 OMR"
currency: OMR
in_stock: true
reviews_count: 3
url: https://www.desertcart.com.om/products/548069305-arris-t25-rb-cable-modem-fast-docsis-3-1-gigabit
store_origin: OM
region: Oman
---

# 1 Gbps Speed Voice Support 2 Ports Arris (T25-RB) - Cable Modem - Fast DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 800 Mbps Max with Xfinity Plan - Renewed

**Brand:** arris
**Price:** 72.24 OMR
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Internet Experience!

## Quick Answers

- **What is this?** Arris (T25-RB) - Cable Modem - Fast DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 800 Mbps Max with Xfinity Plan - Renewed by arris
- **How much does it cost?** 72.24 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/548069305-arris-t25-rb-cable-modem-fast-docsis-3-1-gigabit)

## 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

- • **Voice Ready:** Supports cable digital voice service, perfect for your home communication needs.
- • **Broad Compatibility:** Approved for major US cable providers like Cox, Spectrum, and Xfinity.
- • **Reliable Performance:** Renewed for quality, backed by a 1-year warranty for peace of mind.
- • **Unleash Blazing Speeds:** Experience lightning-fast internet with a maximum downstream data transfer rate of 1 Gbps.
- • **Dual Connectivity Options:** Equipped with two 1 Gbps ports for seamless device connections.

## Overview

The Arris T25-RB is a powerful DOCSIS 3.1 Gigabit Cable Modem designed for high-speed internet and voice services, compatible with major US cable providers. With two 1 Gbps ports and a maximum speed of 800 Mbps, it ensures reliable connectivity for all your devices. This renewed model comes with a 1-year warranty, making it a smart choice for tech-savvy users.

## Description

Arris (T25-RB) - Cable Modem - Fast DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 800 Mbps Max with Xfinity Plan - Renewed

## Features

- Approved for Cox, Spectrum and Xfinity internet along with other US cable internet providers. Is NOT compatible with ATT, CenturyLink, Verizon, Frontier or other Fiber Optic, DSL or Satellite internet service providers.
- Does support cable digital voice service. Only compatible with Comcast Xfinity Voice
- ARRIS Surfboard T25 DOCSIS 3.1 Gigabit Cable Modem | Comcast Xfinity Internet & Voice | Two 1 Gbps Ports | 2 Telephony Ports | 800 Mbps Max, Xfinity Plans | 1 Year Warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Maximum Downstream Data Transfer Rate | 1 Gigabits Per Second |
| Number of Ports | 2 |
| Data Transfer Rate | 1 Gigabits Per Second |
| Compatible Devices | Router |
| Number of Ethernet Ports | 3 |
| Connectivity Technology | Wi-Fi, Ethernet |
| Color | Black |

## Images

![Arris (T25-RB) - Cable Modem - Fast DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 800 Mbps Max with Xfinity Plan - Renewed - Image 1](https://m.media-amazon.com/images/I/61yGxNns93L.jpg)
![Arris (T25-RB) - Cable Modem - Fast DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 800 Mbps Max with Xfinity Plan - Renewed - Image 2](https://m.media-amazon.com/images/I/61CzBFv0CLL.jpg)
![Arris (T25-RB) - Cable Modem - Fast DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 800 Mbps Max with Xfinity Plan - Renewed - Image 3](https://m.media-amazon.com/images/I/610TduNc5zL.jpg)
![Arris (T25-RB) - Cable Modem - Fast DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 800 Mbps Max with Xfinity Plan - Renewed - Image 4](https://m.media-amazon.com/images/I/71Nnp2sVVgL.jpg)
![Arris (T25-RB) - Cable Modem - Fast DOCSIS 3.1 Gigabit Cable Modem, Comcast Xfinity Internet & Voice, Two 1 Gbps Ports, 800 Mbps Max with Xfinity Plan - Renewed - Image 5](https://m.media-amazon.com/images/I/71eUsoLI0mL.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

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Solid modem
  

*by P***T on Reviewed in the United States 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.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Very easy setup for replacing XFinity gateway
  

*by L***Y on Reviewed in the United States on October 6, 2024*

I decided to purchase my the Surfboard telephony enabled modem (T25) along with a tp-link ax3000 wifi router for my Xfinity superfast plan (800Mbps/20Mbps). I figure in 2 years it will cover the 15/monthly rental. Installation for both was simple and straightforward and I didn't need to call up Xfinity. Afterwards my connection and wifi signal were about the same or slightly better than I had before. The app for setup was about as easy as I feel they could make it. Following are notes from install process:- optional: perform speed test on your phone and laptop in various areas of home noting strength of signal (for comparing with new modem setup at end of the process)- download apps ahead of time and setup accounts (if needed) ahead of time - modem (surfboard central for surfboard modem) - router (tether for tp-link) - xfinity app- open the surfboard central app and start the wizard to add the modem  - select "ISP cable connected without wifi" and "t25"  - this starts a wizard guiding following steps- connect the surfboard modem and disconnect the xfinity gateway- in the XFinity app search for "activate new modem" and activate  - enter the HMAC (HFC) manually (could not find a QR code to scan)  - you never need to enter the telephony HMAC (MTA)- wait several minutes for the modem to activate with XFinity - shows "checking connections" for a few min - shows "finishing" for a few min - test landline phone (may take a few minutes longer)- shut down modem and connect wifi router to modem- start modem then router - wait a few minutes for internet light on router to show up- connect your mobile phone to wife using QR code at bottom of router - initially wifi connection on phone shows connected without internet- go to wifi router app (tether for tp-link) and configure wifi network  - scan QR code to add - update ssid and password- now internet should show up on your mobile phone connected to the wifi- uninstall surfboard central app -- only needed for wizard

### ⭐ 1.0 out of 5 stars







  
  
    Apparently Arris still uses defective chips in its modems. Slow uploads, daily reboots.  Beware!
  

*by D***N on Reviewed in the United States on October 1, 2020*

We purchased this modem specifically because it's certified by Comcast for its gigabit Xfinity internet service. It also incorporates an eMTA (telephone adapter) for the Comcast VoIP /  landline service.Installing it was easy and simple enough; however, getting Comcast to properly provision it took several days and numerous provisioning hits and power cycles.Comcast says it cannot see the anything inside the modem including the signal levels, signal-to-noise ratios or anything behind the password protected advanced page.The modem has slow upload speeds and will reboot itself almost every night. This knock everything in the house off line and makes cloud backups frequently crash.  The modem reboots do not correct the bad internet service.There are plenty of similar documented problems on Comcast's support forums and elsewhere.We had no problems with an older gigabit modem and a separate eMTA, but nothing but problems with this Arris T25 modem.I see plenty of these being sold at the Amazon warehouse at discounted prices, and now I understand why.Arris tells us that the upload signal levels are out of spec. Comcast says everything is OK.  I tend to agree with Arris, based on the error logs, frequent reboots, and uploads hanging.Very frustrating to have a Comcast certify and recommend this modem, but not be able to see what's going internally. And then to blame the vendor they recommend.Whatever Comcast may recommend -- I DO NOT recommend this Arris product as there is no way to determine if defective chips are present or not and no way to get a reliable, stable, internet connection."Lost MDD Timeout" error message causes the reboot -- every day at 23:30 or so.

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-01-22*