Questions & Answers

Q: QuestionWhich internet service provider is this Arris Surfboard cable modem compatible with?

• A:Answer This Arris Surfboard cable modem is certified to work with Xfinity from Comcast.

Q: QuestionDoes this Arris Surfboard cable modem have gigabit ethernet speed?

• A:Answer Yes, this Arris Surfboard cable modem offers gigabit ethernet speed.

Q: QuestionWhat type of technology does this Arris Surfboard cable modem use?

• A:Answer This Arris Surfboard cable modem utilizes DOCSIS 3.1 technology.

Q: QuestionHow many LAN ports does the Arris Surfboard cable modem have?

• A:Answer The Arris Surfboard cable modem is equipped with two LAN ports.

Q: QuestionDoes this work with Optimum ? Will the Voip telephony work with the Optimum service?

Asked 5 years ago by Paul.

• A:Answer This IS NOT. working with Optimum voice. I have been on the phone all weekend trying to get it to work. How did you get it to work?

  Answered 5 years ago by Sally

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Q: QuestionDoes this modem have WiFi built in

Asked 6 years ago by Gator.

• A:Answer This modem does not have a built in wifi.

  Answered 6 years ago by CommunityAnswer

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Q: QuestionIs T25 still in the "do not buy" under the Xfinity approval list, due to the defected Intel Puma chipset?

Asked 5 years ago by Walter.

• A:Answer I returned mine, it would disconnect daily, it still uses the puma chipset

  Answered 5 years ago by mfmayes49

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Q: QuestionCan you please provide the URL to retrieve the latest versions of firmware for the T25? Thanks, Mike

Asked 4 years ago by OlneyMike.

• A:Answer The Cable Operators (MSOs) have complete control of what cable modem/gateway hardware they will allow installed and the firmware it uses, on their cable plant. This means anything directly connected to the cable plant (COAX) in your house. They do this to ensure that nothing happens to anyone upstream from your connections. Cable Operators follow the DOCSIS Specifications that control this methodology of firmware upgrades as well as providing security for the firmware upgrades. Cable Operators also run both the products and firmware through their own test cycles to approve any manufacturers’ modems, wireless gateways, and the associated firmware updates for deployment. This is not an ARRIS only implementation, but the required implementation of any cable device manufacturer. After an MSO has tested and approved a new version of firmware for a cable device, they will then “push” that new firmware out to the devices.

  Answered 4 years ago by ARRIS SURFboard Team

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Q: QuestionDoes this modem work with Spectrum cable?

Asked 4 years ago by cavy.

• A:Answer If you have a cable internet service. Yes

  Answered 4 years ago by Zenidine

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Q: QuestionWe have service from Optimum. Need modem that supports a telephone provided by optimum. Will this work? Right now I have an ARIS TM804. We are getting more bandwidth and Optimum says that our current modem will not work.

Asked 5 years ago by AnneT.

• A:Answer No, this device is not compatible to work with Optimum's internet service but instead is only compatible to work with Comcast Xfinity's internet service

  Answered 5 years ago by ARRIS SURFboard Team

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Q: QuestionTrying to avoid rental fees. Will this device work with Cox and allow me to use my phone line?

Asked 5 years ago by Nolo.

• A:Answer No, this device is compatible to work only with Comcast Xfinity's services, it won't work with Cox's subscription

  Answered 5 years ago by ARRIS SURFboard Team

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Q: QuestionI need a good fast modem with voice service that will work with Mediacom....can you tell me which modem I need?

Asked 3 years ago by Dave.

• A:Answer Unfortunately, Mediacom does not allow us to sell voice modems directly to consumers. You will need to get your modem through them. If you change your plan in the future and do not require voice service, any ARRIS SURFboard modem will work with Mediacom.

  Answered 3 years ago by ARRIS SURFboard Team

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Q: QuestionWill this work for mediacom?

Asked 5 years ago by Rod2020.

• A:Answer No, T25 is compatible to work only with Comcast Xfinity's services

  Answered 5 years ago by ARRIS SURFboard Team

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Q: Questionwill this replace a PR Comm Wireless Modem and PR Com 2port Emta Modem ?

Asked 5 years ago by Anonymous.

• A:Answer Please note that this is a voice cable modem, it does not have an inbuilt wifi router

  Answered 5 years ago by ARRIS SURFboard Team

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Q: QuestionI have wavebroadband now called astound will everything work with the,m?

Asked 3 years ago by dex.

• A:Answer Yes, all of these modems are compatible with Wave. I would recommend calling them to confirm the model you are interested in is compatible with your service plan, before you purchase.

  Answered 3 years ago by ARRIS SURFboard Team

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Q: QuestionWill this support Astound broadband

Asked 3 years ago by Help.

• A:Answer Hello - this modem will only work with Xfinity Internet & Voice service. It is not compatible with any other service provider.

  Answered 3 years ago by ARRIS SURFboard Team

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Q: QuestionDoes this cable modem have a backup battery capability in case of a power outage for the phone line?

Asked 5 years ago by JS.

• A:Answer It does not, but why worry about a battery backup for just the modem when you can get a UPS that backs up your modem, pc, monitor, and wifi router at the same time with auto shutdown when you lose power. I recommend the APC 660VA UPS with 6 ports and 1 USB. If that solution doesn't work for you, and you require a modem with battery backup then buy a combination modem/wifi from Arris that does have a battery backup, or another vendor.

  I would recommend:

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    APC - Back-UPS 600VA, 120V, 1 USB charging port, 7 NEMA outlets (2 surge) - Black

    User rating, 4.77 out of 5 stars with 196 reviews.

    (196)

  Answered 5 years ago by yellohjVerified Purchase

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Q: QuestionIs this product compatible with Optimum and will I need a router.

Asked 5 years ago by Oxalis25.

• A:Answer https://install.optimum.com/JointInstall/ Use that link to add in the MAC address and you will be good to go

  Answered 5 years ago by Starlight22

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Q: Questionwill this support spectrum charter for phone and internet

Asked 5 years ago by capability.

• A:Answer No, T25 is only compatible with Comcast Xfinity's service

  Answered 5 years ago by ARRIS SURFboard Team

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