Suddenlink Approved Modems

As of August 1, 2022, Suddenlink has merged into Optimum (view the Optimum approved modems page).

Several devices appear on the Suddenlink approved modems list. You will find the best approved modems based on WiFi, DOCSIS 3.1, and value below. Suddenlink no longer maintains a official approved modems list. Suddenlink states as long as you use a DOCSIS 3.0 or DOCSIS 3.1 modem (no voice modems), it should work with their network.

As of February 5, 2021, Suddenlink now supports DOCSIS 3.1 modems. You may be in a region that currently does not offer DOCSIS 3.1 service. You may still use a DOCSIS 3.1 modem; it will operate in DOCSIS 3.0 mode until DOCSIS 3.1 is supported locally.

Suddenlink does not support retail phone modems. If you require telephone service, you must use a Suddenlink provided phone modem. You can still use your own cable modem for internet service.

Read the Cable Modem Buying Guide to help you choose a modem. Do not forget to purchase your modem accessories.

Internet providers have begun removing some DOCSIS 3.0 modems from their networks. To maximize the years of use from a modem, it is strongly recommended to purchase a DOCSIS 3.1 device (the latest standard).

Note: may receive a small commission from affiliate links, which helps to keep this website online.

Jump to the full Suddenlink approved modem list

Last Updated: October 1, 2022

Best Modem Value

NETGEAR CM500 DOCSIS 3.0 Suddenlink Approved Modems
NETGEAR CM500 Cable Modem
Model #NETGEAR CM500
WiFi RouterNo
VoIP Telephone AdapterNo

Best DOCSIS 3.1 Modem

Motorola MB8611 DOCSIS 3.1 Suddenlink Approved Modems
Motorola MB8611 Cable Modem
Model #Motorola MB8611
WiFi RouterNo
VoIP Telephone AdapterNo

Best WiFi Modem

NETGEAR Nighthawk AX6000 CAX80 WiFi 6 Router DOCSIS 3.1 Suddenlink Approved Modems
NETGEAR AX6000 CAX80 WiFi 6 Router DOCSIS 3.1 Cable Modem
WiFi RouterYes (WiFi 6)
VoIP Telephone AdapterNo

Full Suddenlink Approved Modem List

The Modems Listed Below Are All DOCSIS 3.0 Modems Unless Indicated as a DOCSIS 3.1 Modem
♦ Indicates an Intel Puma Chipset Defect – Do Not Buy

Note: ✅ means Yes, ❌ means No

BrandModel #ChannelsVoIPWiFi
ARRISDG2460 ♦24×8
ARRISSB6190 ♦32×8
ARRISSBG10 ♦16×4
ARRISSBG6950AC2 ♦16×4
ARRISSBG7400AC2 ♦24×8
ARRISSBG7580-AC ♦32×8
ARRISSBG7600AC2 ♦32×8
ASUSCM-32 ♦32×8
LinksysCG7500 ♦24×8
LinksysCM3016 ♦16×4
LinksysCM3024 ♦24×8
MotorolaMB8600DOCSIS 3.1
MotorolaMB8611DOCSIS 3.1
MotorolaMG8702DOCSIS 3.1
NETGEARC6300 ♦16×4
NETGEARC6300v2 ♦16×4
NETGEARCG3000Dv2 N4508×4
NETGEARCM700 ♦32×8
TP-LinkARCHER CR50016×4
TP-LinkARCHER CR70016×4

Channels: first # refers to downstream channels, second # refers to upstream channels (e.g. 16×4, means 16 downstream channels and 4 upstream channels)
DOCSIS 3.1 offers the fastest speeds

VoIP: indicates if the modem has telephone capability

WiFi: indicates if the modem has WiFi capability

Suddenlink Approved Modems Removed in July 2017

Suddenlink Approved Modems Added in March 2018

Suddenlink Phone Support: 1-877-694-9474

Suddenlink Contact

Suddenlink Service Centers

Suddenlink FAQ

Suddenlink Outages

Suddenlink Facebook

Suddenlink Twitter

Suddenlink YouTube

Suddenlink serves the following states: Arizona, Arkansas, California, Kansas, Kentucky, Louisiana, Mississippi, Missouri, Nevada, New Mexico, North Carolina, Oklahoma, Texas, and West Virginia.

Approved Modems Helpful Resources

Best Wireless Routers for 2022

Free Money Tips

Latest Modem & Router Deals

146 thoughts on “Suddenlink Approved Modems”

  1. I am looking at an ARRIS SURFboard SBG6900-AC to use when in Arizona for the winter with sudden link and use in Montana with century link the other half of year. Will this work?

  2. I’m in the process of buying my own equipment I have suddenlink internet, Netgear CM500 is all I need or I need something else? Thank you.

  3. Anyone know if the Arris SB8200 is approved by Suddenlink yet ? This is a DOCSIS 3
    .1 Modem but fully backwards compatible. Thanks. What is up with the Intel Puma Chip set ? Gee whiz folks.

    • The ARRIS SB8200 may work in your local area in DOCSIS 3.0 mode (Suddenlink does not support DOCSIS 3.1 at this time).

      Yes, the Intel Puma chipset is an absolute mess for the modem industry – made worse by continuing to sell these defective products on the market years after the defective discoveries.

    • You maybe able to use the Motorola MB8600 (the MB8600 is not a NETGEAR model) with Suddenlink. If you want to be absolutely certain the device will work in your region, you should contact Suddenlink for verification. Officially, Suddenlink does not support DOCSIS 3.1 modems; the MB8600 is a DOCSIS 3.1 modem, so it will only operate in DOCSIS 3.0 mode.

    • I bought an MB8600 back in Mid 2017 with the hopes of working on my Suddenlink service – at the time, it did not. I spent a fair amount of time on the phone with a seemingly capable tech trying to get it online to no avail. That was then. Maybe now, 3-1/2 years later, Suddenlink provisioning works. I may research it, because I ended up with using a ARRIS SB6190 which is now on the sh*t list even though is seems to work.

      • Thanks for the info, Timber. The official word from Suddenlink is they do not support DOCSIS 3.1 modems., but select people may get them to work in their region (most likely in DOCSIS 3.0 mode only).

  4. I too am shopping for my own modem/wifi combo and I will also need voice for Suddenlink service. Will the Motorola MT7711 work?

    • Frances L., the Motorola MT7711 may work with Suddenlink for internet only. Suddenlink requires use of their own eMTA for phone service, however. Good luck, Frances!

  5. I just wanted to chime in here and say that I am now using an Arris (CommScope now?) SURFBOARD SB8200 DOCSIS 3.1 cable modem with Suddenlink now. There are a couple of caveats though. One, is that while it does connect and work, it does not yet go into DOCSIS 3.1 mode. It is still only operating in DOCSIS 3.0 mode. You can tell this because the uplink and downlink indicators stay green and do not change to blue. According to what I have been told, they are still working on getting the DOCSIS 3.1 support enabled on their backend network. Two, is that they are still not pushing a modern firmware for the modem. Since the cable provider is in full control of what firmware is used, it is pretty irresponsible of them not to push the latest firmware to address any security concerns that may have been addressed in newer firmware releases.

    It is sad that companies like Suddenlink just do not seem to be capable of managing their networks correctly.

    • Thanks, Richard, for your informative comments. Suddenlink does not support DOCSIS 3.1 modems (nor voice modems). Their network is really limiting compared to other ISPs, unfortunately.

  6. Question – I am wanting to upgrade to a 400GBS Internet service on Suddenlink. I have our phone line through there as well – the phone is strictly Analog and uses the old phone lines. Is there a new modem that will allow me to continue with the phone service as well as upgrade to the 400GBS service?

    • No, Richard, Suddenlink does not support voice modems. You must use a Suddenlink eMTA for phone service. You can still use your own modem for internet service.

      • Can you explain this a bit? “You must use a Suddenlink eMTA for phone service. You can still use your own modem for internet service.”

        I have a phone landline through Suddenlink’s service like the post above. Is the Arris TM822 that I got from them the “Suddenlink eMTA” you’re referring to, through which I can continue to get phone service? How would I connect another upgraded modem of my own for internet service with the TM822 connected to the cable?

        • If you got the eMTA (ARRIS TM822) from Suddenlink, you should be able to continue to use that for phone service. Suddenlink has stated that there is no charge for a phone modem.

          To connect multiple modems together, you may use a cable splitter or multiple coaxial cable connections if your home has them.

  7. Can I use a netgear cm500v with my suddenlink service. I am having issues with the original router provided. The router just shuts down and takes awhile before it restarts. I just want to purchase a router to support my voice and internet.

    • No, Bobby, Suddenlink requires use of their own telephone adapter (eMTA) for phone service. You would be better off purchasing a modem without voice like the NETGEAR CM500 and a separate router to use along with the Suddenlink provided eMTA.

  8. Ok, so I’m considering switching to suddenlink because I’m unhappy with ATT. Suddenlink is my only other option in my neighborhood. According to their website, If i want their 1GB speed I need a 32×8 channel modem. However, on your website all the 32×8 modems have the puma chipset that you recommend not buying. Would a 24×8 modem work with 1GB service? Or would it be better to not get the 1GB service and instead get the 400mb service and downgrade to a 24×8? Or, are there some 32×8 modems I can buy that are compatible with suddenlink that dont have the puma chipset?

    thanks for your help and info.

    • The problem with Suddenlink is they don’t support DOCSIS 3.1 modems. If they did, Michael, you would have a lot more choices for a modem. So, you are either stuck with one of the Intel Puma chipsets modems or get a modem from Suddenlink so they can deal with any issues you may have with a bad modem (lease fees may apply). The other option is to just go with a slower speed and get a non-Puma device for now and wait for DOCSIS 3.1 availability (there are a few DOCSIS 3.1 modems that do not contain the bad Intel Puma chipsets).

      You could wait for Suddenlink to start offering support for DOCSIS 3.1 modems, but that technology is not new and has been around for a few years. The fact that Suddenlink still doesn’t support DOCSIS 3.1 is alarming.

      You can use a 24×8 modem for 1 Gbps service but you will not reach the full speed of the service you are paying for (you are kind of wasting money paying for something you are not taking full advantage of from your speed tier).

      Hope that helps, Michael.

      • Thanks alot for the info. We’ve been making it work with 50mbps for 4 years so i think 400 should be plenty. I’ll prob go that route. This site was a big help, thanks.

  9. Anything faster than a T1 connection is fast for me, LOL. I’m on a legacy plan with blazing 3 Mbps download speeds. The Ambit modem I’ve rented for 12 years now seems to be dying. The last electrical thunderstorm that rolled through may have got to it. Thinking of buying a MB7621 to replace the rented Ambit. Upgrade data plan some day soon.

    Do I have to schedule a tech to come out and baby sit the installation of the new modem? Or, can I just plug-n-play it and then call someone at Suddenlink to enable it on their network?

  10. Im looking for a router modem combo with a phone jack that will work with Suddenlink 1g service and Im having a hard time finding one. I contacted Suddenlink directly and they said I should ask someone at Best Buy. I did that and they sent me back to suddenlink, then I tried Arris and Netgear directly and they didnt know. Im okay with a seprate Modem and Router, can you tell me what you would rent me?

    • A phone jack will do you no good with Suddenlink service. If you need phone service, Suddenlink requires use of their own eMTA (cable modem and telephone adapter). You will need to contact Suddenlink to rent a phone modem from them.

      Rusty, stay safe!

  11. Comment on the Arris SB6183 and Suddenlink compatibility: Suddenlink pushes an old firmware version (SB6183- onto these modems.

    This firmware has known bugs that can cause connection and download issues. The firmware has been fixed by Arris, but the bad firmware continues to be pushed out by Suddenlink.

    Many other ISPs (Time Warner Cable, Comcast, etc.) starting pushing the firmware update around 2015/2016.

  12. Question, why does the Netgear C7000vs say “For Cable Plans Up to 400 Mbps ” in the title but looks liek it can go faster by the specs?

    • Hello David,

      Most modem manufactures state faster speeds on their packaging than the ISP (Internet service provider) actually allows. There are various factors that slow the capable speeds of modems (network capabilities are a determining factor). Many ISPs present Internet plans at 100 Mbps, 200 Mbps, 400 Mbps, then it jumps up to 1 Gig service levels, which the C7000 is not capable of hitting (you need a DOCSIS 3.1 modem to reach 1 Gig speed). So for some ISPs, the C7000 will only be good for up to a 400 Mbps plan. If an ISP offers a 500 Mbps or 700 Mbps speed tier, the C7000 should hit those speeds if the ISP allows it.

      Keep in mind, the speeds on the modem package are not a guarantee.

      You can read more about inaccurate advertised speed claims on the Cable Modem Buying Guide.

      Stay safe, David.

  13. We have Suddenlink for Tv, internet and phone. We have 2 modems, one for phone and another for internet. The internet modem is Arris TG2482A and then there is an Actiontec ECB2500C (which appears to be a splitter) and the phone modem is Arris TM822G.

    My question is can we consolidate to the Arris TG2482A and eliminate the Phone modem?

    • Sorry, Judy, Suddenlink requires use of their own eMTA (cable modem and telephone adapter) for phone service. The only way to get rid of the ARRIS TM822G is to drop phone service.

      If Suddenlink provided both of the ARRIS devices to you, then they can’t utilize the ARRIS TG2482A as a phone modem. If Suddenlink could activate the phone portion of the ARRIS TG2482A that would obviously solve your issue since the TG2482A has everything you need in one device.

  14. The fastest internet package I can get through Suddenlink is 150Mbps, would getting the modems that run close to 1Gig be a huge waste? I want to maximize the limited plan I’m getting but don’t want to waste money buying a modem that far outpaces the available connection. I was looking at something in the ARRIS brand, could you make any suggestion to help out? Sorry, this is just all new to me and I want to make the most effective decision I can for my wallet and performance. I would greatly appreciate anything you can tell me to make an informed decision!

    • Suddenlink is the only ISP to not allow DOCSIS 3.1 modems (the fastest modems you can purchase – what you really need for true 1 Gig speeds). So you wouldn’t be able to to get the latest modems, so no need to really worry about a modem outpacing your current needs. For the ARRIS brand the ARRIS SB6183 is your best option (even allows for future speed upgrades if that happens for you). Be aware that most ARRIS modems contain a bad Intel Puma chipset, but the SB6183 is safe to use. If you want a cheaper modem, but a different brand, Motorola MB7220 is also a good choice.

      Hopefully that helps you, Skylar.

  15. Currently have DSL from local NE Texas ISP. Fastest plan is 80mbps/10mbps billed at $69.95. Its been rock solid at exactly the advertised speed at all times for years. Suddenlink recently pulled fiber through our neighborhood and when I provide my address they offer up to 1gbps/50mbps plan for $50 with lifetime no cost increase. I’ve reviewed your very helpful info on Puma Chipsets, approved modems for Suddenlink and believe I’ve come to the conclusion there is no modem available that would reliably support Suddenlink top tier plan where I would actually get full 1gbps (940mbps) speeds. It appears only Docsis 3.0 puma chipset modems support 32×8 required to achieve actual 1gbps throughput. The next lower tier plan 400mbps/40mbps is just $10 less per month but I’ve read they increase the cost after initial agreement period is over. In your modem buying guide you indicate Docsis 3.1 modems may operate at Docsis 3.0 mode on networks not yet supporting 3.1. I did not find any Docsis 3.1 modems in your suddenlink approved list. So is Docsis 3.1 32×8 modem a bad idea for Suddenlink? If I choose a Docsis 24×8 non-puma modem and sign up for the 1gbps/50mbps plan do you know what realistic speeds I might achieve? Would they exceed 400mbps?

    I’ve read horrendous reviews on Suddenlink customer service both for their internet and Altice TV bundle. I’m wondering if the puma issue with the modem can affect the Altice service. I’m assuming its just IP streams through the cable modem. In other words if I avoid puma modem maybe I could avoid all the problems many are reporting with both internet and TV service. Appreciate any info on my situation and I found your website very helpful.

    • Thanks for the kind words, Steve, and glad you find this site helpful. No ISP (internet service provider) is perfect, so there will always be bad reviews. Some people just have unrealistic expectations (like losing service during a natural disaster) that can make some reviews look skewed. Definitely stay away from any Intel Puma chipset modem as that will help you rule out any connection issues. Many people probably are using Puma modems and that will give them a bad overall experience and bad reviews of the ISP.

      Anything over 500 Mbps will be vastly superior in speed terms compared to your old DSL speeds. If you can lock-in that $50 a month for lifetime 1 Gig speed, do it! Even if your modem can’t pull-in that speed right now, eventually you can upgrade to a faster DOCSIS 3.1 modem. Currently, Suddenlink does not support DOCSIS 3.1 modems, but maybe your local area now allows them since you just got fiber rolled-out to your residential area. All the DOCSIS 3.0 32×8 modems utilize Intel Puma chipsets.

      First step, contact Suddenlink and see if they will allow a DOCSIS 3.1 modem for your street address. If they say no, then get a 24×8 modem from the list above (here is a suggestion: Motorola MB7621). Comcast states on their network, the MB7621 will operate at about 845 Mbps. While Comcast is not your ISP, they do offer info on speeds for modems. You may get different speeds in your area, but it should be close. And the 845 Mbps speed is close to 1 Gig speed (1000 Mbps); you can upgrade at a later point with a true 1 gig modem (DOCSIS 3.1 when Suddenlink allows them).

      Hope that helps you, Steve.

  16. I tried their chat and that was pretty much useless so I called and spoke with someone. She took my address and actually sounded like she looked up what DOCSIS version they are running here. She said my neighborhood is running DOCSIS 3.1. I live in Southview Village Development in Fate Texas north east of Dallas in Rockwall County. Assuming this is accurate this obviously opens up possibilities of actually getting actual gigbit speeds while avoiding Puma chipset modems. Now I just have to figure out how to get coax signal from outside to my office where my router & main switch are located. Thanks so much for your help.

    • Hopefully she didn’t lie to you (reps sometimes give the wrong information). Good luck with your, hopefully, true 1 Gig connection, Steve.

      • Its been several months since my first post and thought it was worth sharing how things went for me. I bought the Motorola MB8600 and had suddenlink service installed with 1gbps plan. The modem indicates its running in DOCSIS 3.0 mode. I get the full measure of speed I’m paying for. Speedtests are north of 900mbps in and around 50mbps out. Service has been rock solid for months with exception of one outage for a couple hours a few months ago. I think there were working on lines for the whole neighborhood. So I can report this was an exceptionally good move for me. Cheaper monthly rates with over 10X speed increase and good reliability. I did not go for their TV service but very happy with internet service.

        • Good to hear that you have a good experience with the Motorola MB8600. You should be getting DOCSIS 3.1 service soon, so in the future you can achieve even faster speeds (with a new modem). Thanks, Steve, for posting your experience.

  17. I ordered a Motorola MB8600 DOCSIS 3.1 modem. Suddenlink is supposed to be out on Friday to do the install. Will report back how it goes.

  18. I installed a new Arris SBG10 modem/router combo. The unit seems to be working fine, and my laptop said I had a secure connection, but I keep getting a “No Internet” error message. So I had to switch back to my old modem to send this message.

    The MAC ID on my new SBG10 is **redacted**

  19. Suddenlink service was connected on Saturday. Fiber from the street to new box on the side of the house. Inside the box is ARRIS SDU RFoG CPE that converts to coax. Straight coax run to MB8600. Modem shows all 32×4 channels connected. 256QAM on the incoming channels with about 40db SNR. The modem front panel globe is green rather than Blue so it looks like they are not running DOCSIS 3.1 as I was told by their telephone rep. Regardless I’m getting over 900bmps incoming on wired connection and over 50mbps outgoing. Latency is rock solid at 9ms. Ping trace to google does not show the dropped packets and jitter from flawed Puma modems. Very happy with the service so far. So I can report at least in my neighborhood that Suddenlink is running DOCSIS 3.0 but Motorola MB8600 works well with their 1gbps service.

    • Thanks for replying back, Steve. Too bad you are not receiving the blue globe for an actual DOCSIS 3.1 connection (for reference: the Motorola MB8600 Quick Start Guide, page 8). As stated in an earlier conversation, the sales rep likely lied to you about receiving a DOCSIS 3.1 connection. Suddenlink continues to not support DOCSIS 3.1 at this time (hopefully that will change soon). At least you are receiving a fast speed and have no connection issues. Enjoy it, Steve!

    • Once Suddenlink officially supports DOCSIS 3.1, then the Suddenlink approved modem list will be updated. Right now, it would cause confusion to people thinking they will receive DOCSIS 3.1 speeds and service. Yes, DOCSIS 3.1 is backwards compatible with DOCSIS 3.0. So, for those reading this comment, you can try a DOCSIS 3.1 modem (no guarantee it will work with Suddenlink’s network, but if it does, it will run in DOCSIS 3.0 mode until Suddenlink supports DOCSIS 3.1).

      Suddenlink is the only cable internet service provider that still does not support DOCSIS 3.1 service (in all local regions). The bigger issue is why does Suddenlink not support DOCSIS 3.1 service in 2021 (years after other ISPs offer DOCSIS 3.1 speeds)?

      • I currently have a netgear cm1000 a DOCSIS 3.1 modem and it is completely working fine. I have the 1 GB package from suddenlink and getting 950 MB down and 54 MB up.

        • Yes, Daniel, a DOCSIS 3.1 modem (working in DOCSIS 3.0 mode) works for you in your region. Not everyone will be as lucky as you. Suddenlink operates in other regions as well, so there is no guarantee it will work for others. Officially, Suddenlink does not support DOCSIS 3.1.

          In other words, if Suddenlink continues to not support DOCSIS 3.1 modems, customers will never be able to go beyond 1 Gig speeds. Until Suddenlink supports DOCSIS 3.1 for everyone, DOCSIS 3.0 modems are recommended.

            • Waiting for a response from Suddenlink on this. This post will be updated when that happens.

              **Update: Suddenlink has confirmed that they now support DOCSIS 3.1 in most regions. Info on this page has been updated.

  20. Upgrading to 1 gig service with Suddenlink this week. I bought a NETGEAR – Nighthawk AX6600 Tri-Band Wi-Fi 6 Router 3 weeks ago and just had it going with their cheap Aaris modem. Today, I bought a NETGEAR – Nighthawk CM1200 32 x 8 DOCSIS 3.1 Cable Modem. I cannot wait to get everything hooked up and see the difference.

    Please tell me this will be a good fit and will work with Suddenlink!!

    • Lisa, you got the best combination of equipment (a DOCSIS 3.1 modem and a WiFi 6 router). You should be good to go for the next decade. Enjoy your new gear!

  21. I’m about to move in a community in Texas that the only provider that can offer 1gig speed is Suddenlink. I wanted to buy a future proof modem+router but I don’t want to break the bank.

    Could you help me choose, please? These are my options.

    1. Motorola MB8600 modem + Motorola AC2600 wifi router

    2. Motorola MG8702

    3. Netgear C7800


    • The NETGEAR C7800 is a bit pricey, so ignore that device. Your best (and cheapest) option is the Motorola MB8600 combined with the Motorola MR2600. A stand-alone WiFi router will likely give you better performance and is easier to replace if the router needs to be upgraded later. Bench, the first option you listed will be best for your situation.

      • Hello!

        I have a follow-up question, sorry if this is somewhat off topic. With regard to routers, I know you said that my first option is the best, I’m not that technical but I saw on Motorola’s website that “WiFi Speed: Up to 800 Mbps at 2.4 GHz and up to 1733 Mbps at 5 GHz” I’m not getting the full potential at 2.4GHz since I’ll get the 1gig plan. Is there a better wifi router that you can suggest? Is it okay to get a different brand? I’m looking at the Google Nest Wifi router.

        • If you want the fastest WiFi speeds, you will need a WiFi 6 router. But that will be more expensive and then you go into the “breaking the bank” option. The best option for a WiFi 6 router is the Asus ROG Rapture GT-AX11000, but it is expensive. The Google Nest (1.2 Gbps) max speed reflects combined top speeds across both 2.4 GHz and 5 GHz bands. Overall the 2.4 GHz band is slower than the 5 GHz band. If you want the fastest WiFi speeds, you will need to buy a more expensive router.

          Yes, it is okay to use different brands for a modem and router. Keep in mind, WiFi speeds in general will be slower due to wireless signals being affected by interference, building materials, device distance from router, etc. You will always get faster speeds hard-wiring devices.

  22. Just got Suddenlink (it’s the only provider in my area), they provided an Arris DG3270A Modem/Router. Interestingly this model is not on the list above, and it seems to be performing above the listed spec as I’m getting ~850Gb down. Thinking of upgrading to hopefully better WiFi thinking either the Motorola MG8702 combo or the Motorola MB8600 with AC2600 router. Thoughts?

    • Suddenlink no longer provides an official approved modem list, Pat. They state any DOCSIS 3.0 or 3.1 modem should work on their network. The ARRIS DG3270 (DG3270A) contains a bad Intel Puma chipset, however. You may encounter connection issues in the future.

      Both Motorola models you pointed out are safe from the bad chipsets of Intel. You will likely have better WiFi performance using a separate router than using a combo modem and router device. So, Pat, the Motorola MB8600 should be your target. You can read more about the advantages and disadvantages of combo units in the Cable Modem Buying Guide under the sub-heading Pros and Cons of Combo Modem and Router Devices.

  23. I’m thinking to switch to suddenlink from Xfinity next week and I already bought years ago the NETGEAR AC1750 r6400 router and NETGEAR MC1000 modem last year. Do you think this set up it will be ok with 1Gb speeds plan..?

    • Kent, you will need to use a Suddenlink eMTA (cable modem and telephone adapter) if you require phone service from Suddenlink. You can get that from your local office. Suddenlink does not support voice modems.

      • I have it. (cable modem and telephone adapter)I need a high speed modem that works with eMTA and has a phone connection on the modem. I have a arris tm822 works great. Isn’t there a faster one?

        • If you want a faster eMTA (modem and phone device), you will need to get it from Suddenlink themselves. You can’t purchase and activate one yourself on their network. In other words, the only eMTAs that work on Suddenlink’s network are the ones you get from your local office. Tell them about about your faster internet speed; Suddenlink should provide you a faster device.

          • I can’t buy a compatable modem with voip phone and over 400+mps? Suddenlink is it– and I have no choice but to rent it for $25.00 a month?

            • No, Kent, you can not buy a phone modem. Suddenlink does not allow it. You must rent a phone modem from them directly. You can purchase your own modem, but not a phone modem; phone modems must be rented from Suddenlink.

              Another option for you, Kent, is to buy an Ooma phone device, which means you can get rid of your Suddenlink phone service. Ooma devices use an internet connection to give you phone service regardless of your internet service provider. Then you can buy your own non-phone modem.

    • The Motorola MB8611 is certainly the better option and should work well with Suddenlink as long as your neighborhood supports DOCSIS 3.1. If your home doesn’t support DOCSIS 3.1, your modem will still work in DOCSIS 3.0 mode until Suddenlink upgrades your neighborhood.

  24. Morning Gurus,

    I’ve been with Suddenlink for sometime now. Spotty internet at best to say the least. First I started with their modem/WIFI but quickly realized I needed my own equipment as I got the lifetime 1 GIG service and my speedtest never got over 150. I changed to a NETGEAR CM1200 with a Meshforce M3s WIFI and that lasted a while but my internet kept stopping for like 2-3 hours at a time and then come back on, still was slow at around 150 MBPS and my daughter could hardly get on the network and her room was right next to the closet that has the equipment in it. I had Suddenlink come out a couple times and they would say everything looked fine. Finally this last week the internet went out COMPLETELY. I had them come out and they said the service coming in looked fine and they thought it was an issue with our Meshforce M3s WIFI. So I decided to dump it all and start over as I believe the real issue was my NETGEAR CM1200, when plugged into my switch to all the hardwired locations throughout the house still don’t read any internet service. So I have opted for a ARISS SURFboard SB8200 for the cable modem and the NETGEAR Orbi Whole Home Tri-band Mesh WiFi 6 System (RBK752). Just wanted to pick your brain on if you think I’m headed the right direction to finally get some relief from this internet nightmare!? Thanks so much for your insight.

    • Hello David,

      There are a lot of variables when WiFi is involved. If your new setup doesn’t work, there is something weird going on with your home. With any internet connection issue, always try no WiFi first so you can eliminate the router being the issue. You may need to run wired connections for a day to test your internet connection. It is good you are using WiFi 6 as it is better at penetrating walls. Keep in mind, any device in your home or neighbors can cause interference to you wireless signal, so if you can rule out a wired connection as having problems, that leaves a wireless signal as the issue.

      Everybody has different homes: different building materials, closeness of neighbors, electronic devices in the home, etc. that can cause issues for a wireless internet signal to work properly.

      If your new setup with the ARRIS SB8200 and NETGEAR WiFi 6 RBK752 doesn’t work, don’t buy a new modem again. There is something in your home causing interference with your WiFi. You may need to keep trying different routers to see if there is one that will work in your home, David.

      The SB8200 hardwired to a PC should absolutely hit 1 Gig (or close to it) on a speed test, for example. If it doesn’t, then notify Suddenlink this is an issue with your cable line into your home. It is easier to prove to an internet provider if you are not reaching speeds you are paying for when a device is hardwired, as opposed to using WiFi. Good luck, David!

  25. My 5 year old home has the modem in a panel box in the garage. The tech guy that wired and set up my entire system says it’s the best place for it. I have my netgear router in a control room inside with all my equipment. I am set up with Control4 system. Several months ago I upgraded from 200mb to 400 as I was using too much data for the 200. Every 30 days my internet and TV’ s has shut down. I found out today that the latest modem installed is arris Dc3240 which is a combo modem/router. SuddenLink no longer has a stand alone modem in NC so I bought a new Netgear MC1000 to replace the latest one installed by the SuddenLink tech. Tomorrow my tech guy is coming to set it up. He says that because I have my own router and a combo modem that when he bridges it 30 days later SuddenLink resets it and it then shuts down. This is very confusing and I’m sorry for the lengthy info. Do you think with my new MC1000 modem and my inside router it will solve my problems?

    • In theory, it sounds like getting rid of bridging the two routers together should fix the issue. So using the NETGEAR CM1000 with your NETGEAR router should stop Suddenlink from your resetting issues. But there could be other variables not known that could be affecting performance of your devices. Hopefully your tech guy gets it properly setup and won’t reset every 30 days. Andy, respond back if the tech guy figures it out.

      • Thank you for your response. We found out that the SuddenLink modem model # is DG2470. I gave you the wrong model in previous message. This modem is an Intel puma 6 chipset. These particular intel chips have given so much problems with dropping IP addresses that there’s a lawsuit against it in Ca. My tech guy installed my CM1000 modem this morning and I called SuddenLink to get it set up. So far all is good. Please let your chatters know about the bad Intel chip. Stay away from them. This is a great forum you have set up. I have learned so much. Thank you.

    • Ben, the NETGEAR CM1150V is definitely not supported by Suddenlink (that device is exclusive to Comcast only). If you need a phone modem, you must get it from Suddenlink directly (as stated in the third paragraph at the top of this page).

    • Yes, you can use the Motorola MG7700 with a Suddenlink eMTA. If you only have one coaxial cable connection in your home, you may use a cable splitter to provide an internet connection to both devices or connect an Ethernet cable from the router to the eMTA.

      • I attempted to use my current TM822g modem only for voice and install my MB8600 only for Interent with Suddenlink’s help but it would not work and both devices connected to a splitter.

        SL rep said the TM822g cable MAC was interferring with the MB8600 MAC. I though the TM822g MAC could be deactivated but the rep said that if that was performed then the TM822g would lose voice service.

        I’m confused as you stated above that the MG7700 and be used along with the eMTA.

        • Did you get the ARRIS TM822G modem from Suddenlink? For phone service, you must use their phone modem.

          A better solution is to get rid of the phone modem and use an Ooma device. Ooma allows you to just use your Motorola MB8600 (no need for a special phone modem from Suddenlink). If you change internet providers, your phone service moves with you. Ooma is probably cheaper too than what Suddenlink is charging you for phone service.

          However, Suddenlink has stated that you can use a cable splitter to link a Suddenlink phone modem and retail modem together.

          • Yes, the TM822g eMTA modem is owned by Suddenlink.

            I have thought about using a VoIP provider but I was not quite ready to port out my number from Suddenlink to a VoIP provider. May do that at a later date.
            I wanted to get the MB8600 setup and working first while I still had phone service using the TM822g so I could call tech support if necessary.

              • Can the TM822g still be used for voice only if the unit is reprovisioned for only voice service and not for Internet service? If the cable MAC address is disabled will the TM822g still peform as an eMTA?

                  • Is that MAC for the eMTA for voice to connect to an ISP for phone services or does that eMTA modem also need a MAC for the cable modem connection to the ISP so the eMTA will function for voice services? Keep in mind that I do not need the cable modem portion for Internet connection to work. I just need to know if the cable MAC is needed for the modem to work for voice only. I know there will be a MAC assigned to the eMTA for voice service.

                    • This question was asked to Suddenlink themselves since only they know how their network truly works. Their reply was that a Suddenlink phone modem would work in combination with your own retail internet modem with no problems. This simple reply did not break down how they handle the MAC addresses. As long as all your devices are active on the same account, you should not have problems with this setup. If you continue to have problems with Suddenlink’s phone modem, then it will be time to upgrade to an Ooma device and give up on Suddenlink fixing the issue with your phone modem. Maybe the ARRIS TM822G is defective?

                    • Newsflash!

                      TM822g working along side MB8611 just fine now. I purchased an MB8611 thinking maybe the MB8600 was not functioning correctly. Now I have a backup for the MB8611.

                      My main problem was DNS related that prevented me from connecting to the Interent on the MB86xx modems and not hardware related.

                      Thanks for your help. If you are the person who maintains this website and answers all the incoming questions and keeps up with most all of the major ISPs, then you are a very busy person.

  26. New to suddenlink. Paying for the 1gb plan. They brought me a dg3270. Not getting over 500 when using cats cable straight into a 10 gb port on desktop. I know it is the puma chip…should I try investing in a arris s33? Thanks

    • Absolutely, Chris, you should invest in a better device like the ARRIS S33. You should definitely be receiving a faster speed. The S33 allows you to reach speeds of 2.5 Gig (when Suddenlink eventually offers that speed tier).

  27. I currently have SB6190, I know bad chip, but neighbor does not have one with bad chip. So my neighbor (20Mb plan) and I (1G plan)are on an end of the line node for our neighborhood and we are getting a lot of T3/T4 timeouts and dropped 75% of the day. This happens intermittently, good for two weeks and bad for a few weeks. Tech came out today asking which modems we have and told us both we are using modems that are no longer approved because they are not 3.1 and unable to communicate upstream due to power and noise. Normally upstream sits around 45-47 dBmV. I went back to find the approved list, nothing on Suddenlink’s pages and when I asked tech call center support, they said any 3.0 or 3.1 DOCSIS modems are fine. So is the 6190 my T3/T4, no range response villain or not? In past it has not been the cause, it was cracked casing of their cable and burned out comm board at node. Basically do I need to drop $150 and invest in the Motorola’s 8611 (3.1 DOCSIS) or not?

    • The ARRIS SB6190 is the worst offender of the bad Intel Puma chipsets. You need to get rid of that defective modem. You can view the lawsuit page here, which shows the SB6190 prominently. It is time for an upgrade (your neighbor too). If you purchase the Motorola MB8611 from Amazon, you can test it out to see if it fixes your connection issues.

      You should try the DSLReports Puma 6 test shown on this page. You will likely see some red for your results.

      The advantage of DOCSIS 3.1 is the speed the MB8611 is capable of hitting – 2.5 Gbps for this device. You will be set for many years when Suddenlink offers those speeds in the future (no need to purchase another modem). The tech should have ruled out any issues with your cable line (for example, pinched cabling, eroded cable, etc.). You are correct, any DOCSIS 3.0 or 3.1 modem should work on the Suddenlink network. However, DanO, the recommendation is to upgrade to a DOCSIS 3.1 modem to prove if the tech is correct.

  28. Between the big 3 of cable modems, Netgear, Motorola and Arris, which brand seems to be more acceptable and compatible for Suddenlink’s network? Netgear modems seem to cost more then the other two brands. Is Netgear really worth the extra cost?

    Between the Arris S33 and Motorola MB8611, I’ve read where the S33 has heat issues and MB8611 runs cooler. Motorola modems appear to have better air flow circulation than both Netgear and Arris.

    • No, the more expensive NETGEAR devices are not worth it. Plus, NETGEAR only provides a one-year warranty, while the other guys provide two-year warranties if that matters to you. Jeff, you actually answered your own question. The best device for you is the Motorola MB8611 (it is also the cheapest of the devices you listed).

    • No, as stated at the top of the page, Suddenlink does not support voice modems. You must rent a phone modem from Suddenlink directly if you need phone service.

      • We’ve been on Suddenlink for several years and had phone VoIP through them from the beginning on the Arris TM822G they supplied. Why do you keep saying they don’t support phone? With the introductory offer they were waiving the rental fee, but stopped without mentioning it, so now it’s been $10 a month. It’s time to buy one but the phone models aren’t sold retail, it’s all secondary market for that. So you have to get one with someone else’s house grime, not just buy the one you’ve been using that only has your grime. But they do let you use your own. Here’s the page for that process:

        • You shouldn’t be using a secondary market phone device either. You must rent it directly from Suddenlink in order for phone service to work properly for your home (some internet providers require rented phone modems). Unfortunately, that is Suddenlink’s rule. As an alternative, you can use a regular modem (non-phone modem) and combine that with an Ooma device, which allows you to use your internet connection to provide phone service instead of being stuck with Suddenlink’s phone capabilities.

  29. I came to this site to see if I could get a more stable connection. We had four tech visits and a new modem by Suddenlink within a month to fix constant disconnects. Nothing worked. I read through all the comments and bought the Motorola MB8600. I got it connected and activated earlier this evening. An hour later the connection dropped. I’m at a loss on where to go from here. I have the Asus GT-AC5300 connected to the modem and an Asus GT-AC2900 as a mesh node downstairs. We had Spectrum before our move and it was bad but not this bad.

    • The question here is did you try disconnecting the router? Did you try just using the modem only? Does the modem connection drop an hour later?

  30. Hi, I just upgraded my Suddenlink to 1G and first, there are only 2 ethernet ports so I had to purchase a switch. I need 3 at least. I need Wifi and have an AP in the living room (ethernet) for wifi signal efficiency out there. Ever since I got this modem, not only are we losing internet all day, but every time I drop out of one of my client’s VPNs (any of them – all different types), I lose my internet (ethernet) and my daughter and others lose theirs (wifi). Sometimes I have to flush my DNS and renew the IPs. She loses her work and I lose my work. I do have the phone but I can either get rid of it (Suddenlink) or split it. I need something that will work for me that uses all of this. The Motorola 8611 you mentioned doesn’t have what I need. I program and for big companies. I need something that is not going to drop me and has what I really need. What do you recommend? I was looking at a Mesh Wifi Network. Can you help me out please? I just don’t want to buy something that isn’t going to work for me.

    • The Motorola MB8611 is still your best option here. Get rid of the phone service. You can purchase your own phone device like an Ooma for voice service; it uses any internet connection to give you free phone calls. You can view recommended routers here (they range from cheap to more expensive devices, depending on your budget). If you do purchase a router, make sure it has enough ethernet jacks for your needs. Hopefully, Dawn, that points you in the right direction to get the service you are paying for with Suddenlink.

  31. Dear Guru — I’m trying to work from my new home in Georgetown, TX, where Suddenlink is the only option. I purchased a new ASUS RT-AX58U router that’s paired with an older Motorola MB7621 DOCSIS3.0 modem (on the now obsolete compatibility list (?)). I’m getting half of the 1Gig service I’m supposed to be getting, which sounds like a DOCSIS version issue. I can deal with that since it’s way better than my 15Gig service at my old place (served by xfinity).
    My concern is that my service seems sporadic, esp when VPN’d into my work network and even if I b.ypass the router and go direct via ethernet to the modem…My access is dropping frequently and randomly and interrupting my ability to attend online meetings. Similarly, my wifi TV tends to struggle finding the network on startup.
    Suddenlink tech support is not helpful as the interruptions are sporadic. Does this sound more like a modem compatibility issue or something else? I’m desperately fishing for someone that might have some helpful advice before investing in a new modem.

    • The Motorola MB7621 is a good, safe modem (no bad Intel Puma chipsets), so the modem itself should not be giving you connection issues. The MB7621 is rated for about 800 Mbps, so you should be seeing those speeds instead of 500 Mbps. If you want 1 Gig speeds or faster, you will need a DOCSIS 3.1 modem. Did you try your connection without using a VPN? Maybe that is causing your issue. Try no VPN and a wired only connection to your modem and see how your internet performs then. But a new modem will be needed anyway if you want the 1 Gig speed you are paying for from Suddenlink.

  32. I’m a Custom Integrator for home A/V and automation systems. I install networks since it’s the backbone of my work. I am looking for cable modem with voice that is compatible with suddenlink. I’ve been using just Internet modems, however I have 2 customers that will have phone also. Is is the Arris T25 compatible? I don’t need router or wifi, just Internet and phone.

    • As stated at the top of the page, Suddenlink does not support voice modems. Unfortunately, you will need to rent a device if you need phone service. So, the ARRIS T25 is not compatible with Suddenlink (it only works with Xfinity).


Leave a Comment (All Comments are Moderated)