--- product_id: 359905236 title: "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" brand: "arris" price: "1846.68 DT" currency: TND in_stock: true url: https://www.desertcart.tn/products/359905236-arris-surfboard-t25-docsis-3-1-gigabit-cable-modem-comcast store_origin: TN region: Tunisia --- # DOCSIS 3.1 tech - 10x faster speeds 2 telephony ports for digital voice 2x 1 Gbps Ethernet ports 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 **Brand:** arris **Price:** 1846.68 DT **Availability:** βœ… In Stock ## Summary > πŸš€ Own the fastest lane in your home network! ## Quick Answers - **What is this?** 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 by arris - **How much does it cost?** 1846.68 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/359905236-arris-surfboard-t25-docsis-3-1-gigabit-cable-modem-comcast) ## 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 - β€’ **Integrated Voice Support:** Stay connected with two telephony ports supporting Xfinity Voice, turning your modem into a digital phone hub. - β€’ **Save Big, Own Your Modem:** Slash your cable bill by up to $168/year by ditching rental fees and owning your high-performance modem. - β€’ **Blazing-Fast Gigabit Speeds:** Harness the power of DOCSIS 3.1 for lightning-fast internet up to 800 Mbps, perfect for 4K streaming & VR gaming. - β€’ **Dual Gigabit Ethernet Ports:** Connect multiple wired devices simultaneously with two 1 Gbps ports for seamless, lag-free networking. - β€’ **Effortless Setup & Security:** Activate quickly via the SURFboard Central App with preset Wi-Fi securityβ€”no tech headaches, just instant connectivity. ## Overview The ARRIS SURFboard T25 is a DOCSIS 3.1 cable modem designed for Xfinity Internet & Voice plans, delivering up to 800 Mbps speeds with two 1 Gbps Ethernet ports and dual telephony ports. It offers advanced channel bonding for ultra-reliable gigabit performance, supports digital voice services, and helps users save on monthly rental fees. Ideal for professionals seeking high-speed, secure, and cost-effective internet with integrated voice capabilities. ## Description The T25 is a DOCSIS 3.1 cable modem – the newest technology being offered by cable providers – with two telephone lines for digital voice support, plus two 1-gigabit Ethernet ports for connecting to a Wi-Fi router or other wired devices. It’s capable of bonding up to 32 downstream and 8 upstream DOCSIS 3.0 channels or 2 x 2 OFDM DOCSIS 3.1 channels, providing increased bandwidth for true gigabit speed capability, perfect for things like 4K ultra-HD video streaming and Virtual Reality gaming! It is the perfect choice for gigabit speed internet plans and saves money on monthly modem rental fees. ## 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 - 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 | | Brand | ARRIS | | Built-In Media | Power Supply | | Color | Black | | Compatible Devices | Personal Computer, Smartphone | | Connectivity Technology | Coaxial Cable, Ethernet | | Customer Reviews | 4.1 4.1 out of 5 stars (1,670) | | Data Transfer Rate | 1000 Megabits Per Second | | Global Trade Identification Number | 00612572215845 | | Internet Service Provider | Xfinity | | Item Dimensions L x W x H | 6.8L x 18.2W x 26.8H centimeters | | Item Type Name | Xfinity Voice Cable Modem | | Manufacturer | CommScope | | Maximum Downstream Data Transfer Rate | 800 Megabits Per Second | | Maximum Upstream Data Transfer Rate | 8 Megabits Per Second | | Mfr Part Number | T25 | | Model Number | T25 | | Modem Type | Cable | | Number of Ethernet Ports | 4 | | Number of Ports | 4 | | UPC | 612572215845 | ## Product Details - **Brand:** ARRIS - **Compatible devices:** Personal Computer, Smartphone - **Connectivity technology:** Coaxial Cable, Ethernet - **Internet service provider:** Xfinity - **Product dimensions:** 6.8L x 18.2W x 26.8H centimeters ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/71znKIOnPhL.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.. ## 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 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/359905236-arris-surfboard-t25-docsis-3-1-gigabit-cable-modem-comcast](https://www.desertcart.tn/products/359905236-arris-surfboard-t25-docsis-3-1-gigabit-cable-modem-comcast) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-03*