does it work with Mediacom cable and voice service?

No, T25 is compatible to work only with Comcast Xfinity's cable internet subscription

Does this model still use the Intel Puma chipset?

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

my arris tm822r has battery backup, which is great for when power goes out. does this modem have a battery backup?

No, T25 does not has the battery backup but you can use an external UPS power supply in case of power outages

does it work with cox cable and voice service?

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..

ARRIS 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

ARRIS 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

ID del producto: 621803887

Detalles

Brand
ARRIS
Internet service provider
Xfinity
Connectivity technology
Coaxial Cable
Compatible devices
IOT devices
Product dimensions
6.8L x 18.2W x

⚡DOCSIS 3.1 tech - 10x faster speeds

📞2 telephony ports for voice

🔌Two 1 Gbps Ethernet ports

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$U13933

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Descripción

🚀 Surf the future with ARRIS T25 — speed, savings, and seamless voice all in one sleek modem!

CUT YOUR CABLE COSTS - Own your modem and save up to $168/year on rental fees—smart money moves start here.
DUAL GIGABIT ETHERNET - Two 1 Gbps ports ensure seamless wired connections for your home office or entertainment setup.
VOICE READY CONNECTIVITY - Integrated telephony ports keep your home calls crystal clear with Xfinity Voice compatibility.
EFFORTLESS SETUP CONTROL - Plug in, activate via the SURFboard Central App, and manage your network with ease—no tech headaches.
NEXT GEN SPEED STABILITY - DOCSIS 3.1 delivers blazing-fast, low-latency internet perfect for streaming, gaming, and multitasking.

The ARRIS Surfboard T25 is a DOCSIS 3.1 cable modem designed for Xfinity Internet & Voice users, offering up to 800 Mbps speeds with two 1 Gbps Ethernet ports and 2 telephony ports. It enables significant savings by eliminating rental fees, supports next-gen multi-gig networking, and features simple app-based setup for professional-grade home connectivity.

Presupuesto

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 1,671 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
Item Weight	762 g
Manufacturer	CommScope
Maximum Downstream Data Transfer Rate	1000 Megabits Per Second
Maximum Upstream Data Transfer Rate	1000 Megabits Per Second
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

Reseñas

P**T

Solid modem

3.11.2022

D**T

Overall I'm pleased with the ARRIS T25...Comcast, not so much.

8.04.2021

J**T

T25 Cable Modem Has Issues On Comcast Service

30.11.2020

G**E

*** Update - Stability Improved

27.02.2020

V**R

ARRIS T25 Modem

12.03.2026

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$U13933

Duties & taxes included

In stock

Sold byAmazon UruguayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Uruguay.

Secure transaction

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Trustscore 4.5 | Más de 7,300 reseñas

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