ARRIS SURFboard SBV2402 DOCSIS 3.0 Cable Modem , Comcast Xfinity Internet & Voice , 1 Gbps Port , 2 Telephony Ports , Supports Xfinity 800 Mbps Max Internet Speed

This is a good product and the price isn't bad if you really need both an Xfinity cable modem and a high capacity router. This is one of only two models that Xfinity recommends for 400 Mbps internet connections that work with Xfinity's VOIP landline telephone service. These are the fastest cable modems that work with Xfinity's VOIP system. And this was the less expensive option (although looking back it might have been worth spending more to get the other choice (a Netgear model) just because of the color. This is the only white device on my computer desk and it really sticks out (LOL).According to at least one of the tech support people I talked to, a lot of people don't actually upgrade to a VOIP compatible modem. If they have a working VOIP modem they can keep using it for phone service, while transferring their internet connection to a faster, Non-VOIP cable modem. I didn't test this, but if it's true it means that you can get a Gbps capable DOCSIS 3.1 modem / router and instead of this unit. I don't think I could have saved much money by doing this, but you might be able to. Clearly there are a lot more cable modems to choose from if you don't need them to be Xfinity VOIP capable, so I would recommend you consider this before you buy.But if you do buy this unit with the intention of using it for VOIP with Xfinity, PLEASE, PLEASE, PLEASE DO NOT CALL XFINITY TECH SUPPORT TO HELP WITH THE INITIAL SETUP OF THIS DEVICE!It comes with an excellent set of Quick Start instructions that can prevent you from doing what I did, which is spend over an hour frustrating Comcast Agents and Tech support people on the phone trying to get it all set up in one step. It just isn't set up to do that.As per the Quick Start Guide, you start the setup by connecting your coaxial cable and either an Ethernet (preferred) or wireless connection to the modem from a PC, Mac, Laptop, or similar device with web access. When you boot up the modem it automatically configures itself to go online and prepare itself for activation by Comcast. Crucially this step takes 5-10 minutes and has to be completed BEFORE you can register it for your account. Trying to start with the registration on the phone resulted in a bunch of frustration as the constant reboots ordered by Comcast messed up the software that the modem was trying to run to set itself up. Then, as per the Quick Start Guide, you can go online and use the www.xfinity.com/activate web site to both register the modem to your account, and set up the SSID you and password you want to use, ideally the one you already used before the upgrade. This automatically sets up the 2.4 and 5 Ghz bands to work off the same login and to switch automatically. Only after doing this do you want to mess with the VOIP settings, which has to be done by phone. The Quick Start Instructions give you a special number (1-855-652-3446) that apparently connects you to the tiny subset of Comcast techies that know how to transfer your VOIP service to this modem.I ignored these instructions and tried to let Comcast handle the installation over the phone. The result was over an our spent with various techs trying to intervene in the process before the modem was ready for the next step. I wasted everybody's time and effort. In the end, the modem itself had to take over and fix the installation after the tech guys had succeeded in setting up the VOIP and making it impossible for me to connect to the internet. Basically the modem had to go through it's initial setup protocol again AFTER it had been connected to my account and VOIP service. And when I finally got back online, the modem itself brought up an Arris webpage where I was prompted to complete the WiFi setup by designating a custom SSID and Password, which I SHOULD have done during the registration process had I followed the instruction.In the final analysis it's pretty impressive that no matter how much you try to interfere with the setup process, Arris has this set up so that you will succeed under the power of it's own software.My advice, however, is to trust the Quick Start Guide and follow the steps they suggest. Start with the automatic modem setup using a connected device, then do the Xfinity activation online, and then call the special number for the VOIP setup.Or, if you already have an Xfinity VOIP modem, you can apparently let that handle the VOIP and use this for the Ethernet and WiFi connections. I didn't test this, but it is what I heard from Tech Support.All in all this is a very solid piece of equipment and its good to know that it will complete the install even if you do your best to mess it up. I am getting all of the performance that is advertised now that everything is connected correctly.The only reason I hesitated to give this product 5 stars is that

I decided to cut the cable cord. In addition, I decided to stop paying rent on equipment and purchased my own. I purchased the ARRIS SURFboard SVG2482AC DOCSIS 3.0 Cable Modem & AC2350 Wi-Fi Router which was recommended by my cable provider (Xfinity). It was easy to install and works perfectly.

At one location, it was time to replace a 10 year old a Motorola-branded Arris SB6121 with a perfect performance record. I needed the "triple play voice" (MTA) feature at another location where the absolutely dreadful TG862 had been rented for way too long.I decided to avoid the used OEM models because of all the reviews by people accused of stealing them by the cable company.I bought two SBV3202 Used from Warehouse at less than half the price of new. Both came in the original retail box with a quickstart guide, power cord, and yellow 12 inch category 5e patch cable. One of the boxes looks Iike it slid down the warehouse floor a ways, but the contents were in very good shape for a used item.The pandemic has forced Comcast to get their self-activation game right. Installation was easy. Both modems (including voice) activated on Comcast without speaking to anyone using their Android app connected via LTE. Just make sure you have the "primary user" name and password correct.Both modems test out at exactly the speeds subscribed to. That's 600/15Mbps at my location and 300/6Mbps at the other. It is disappointing that the Comcast upload speeds are so limited because the modem itself is capable of so much better.At the location where the all in one rented device was replaced, I installed 2 used ASUS model RT-N66U. One as the main router and one as a supplemental AP in the entertainment room. That entire setup, including modem. cost less than $100 and throughly puts to shame the performance of the rented Xfinity gateway. Payback period 7 months.Just do it. Amazon prime will take care of you if it doesn't work out, but I would not hesitate to recommend this budget friendly modem if you need one. 3 weeks in. No drops. Good looking logs on both units. Docking 1 star for the enormous size.

A funny backround story on why I needed to replace my router:I've had my old router for 4 years, which was the same model as this. I never had a single issue with it & absolutely loved it, until a dog I was pet sitting for decided to lift his leg & pee on it. My young dog then followed suit & pee'd on it, as well. Right in front of my eyes the router shorted out & that was thatI ordered an Amazon certified ,used, refurbished SJ model which took a week to receive (per the arrival date), then I sat on the phone for over 8 hrs. between Xfinity & Arris over a course of 5 days, only to be told it was a factory defective router.Finally, after yet a 2nd return, I came across my old SV model refurbished. The set up was a breeze & done within 10-15 mins. It works just as beautifully & smoothly as my old one did.A week & so far so good. I did have to reset it once, but I'm assuming it had to do with the new wifi surveillance cameras I just put in. Everything is back to normal again. I'll update if any issues arise.