Top positive review
5 people found this helpful
Very easy setup for replacing XFinity gateway
By Liam C Murray 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
Top critical review
19 people found this helpful
T25 Cable Modem Has Issues On Comcast Service
By Janet on Reviewed in the United States on November 30, 2020
I bought this modem as a replacement for an Arris cable modem I already owned. This model is supposed to support newer DOCSIS standards and have faster throughput. And, it is supposed to be compatible with the Comcast Triple Play services including phone. I have had nothing but trouble with this device since I installed it. Once a week it loses connection so you have neither internet access or phone service. This is corrected by rebooting the modem. The next week it happens again. I originally contacted Arris about this problem and was told by their technical support that there was a problem with the signal strength from Comcast. I put up with this for four months and the same problems continued. I called Arris several more times and was told the same thing each time. They denied any problem with the modem. Finally, I contacted Comcast and had a service technician come to my home and look at my setup. He checked everything and found no issues with the signal strength. His comment was the Arris technical support people were misunderstanding the status report which you can get from the modem. I contacted Arris again and told them about the Comcast service visit and the results. They finally agreed to send me a new T25 replacement. I received the new unit in about a week, installed it and then waited to see the results. Unfortunately, the exact same problem persisted. I tried to contact Comcast again to get a return visit from a service technician but was told since I own the modem they would charge me for a service visit. I decided to wait. Since that time I have researched the problem on the web and discovered this is a well known problem with this modem. No one knows whether it is a Comcast compatibility problem and or an Arris problem. But, both companies are pointing fingers at each other and customers are stuck in the middle. I still have this problem and cannot find any resolution. I am considering purchasing a different cable modem. DO NOT buy this cable modem if you want to use it for Comcast service.
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