Sagemcom F@ST 3864AC has been discontinued. See all Sagemcom Modems.
Avoid at all costs, absolute garbage
When it's working it flies, which would be about 15 minutes every hour.
As others have mentioned, there are a lot of issues:
- speed drops to less than 1mbps regularly
- connection often just drops, requiring restart
- latency can be unbearable
- connecting multiple devices over WiFi is almost impossible. (even leaving WiFi enabled with nothing running on my Samsung S8 will cause my xbox (wired) ping to go from 9ms to 1,500ms)
Basically, it's unreliable and useless. Just get a $100 netgear instead.
Not so fast
Poor router slow wifi on 2.4 GHz channel. Poor signal and drop outs on the 5ghz .
Get better wifi connecting a second router using eithernet and making it a access point.
If you aren't getting this through internet plan choose anything else.
I have NBN connection and the wifi on this router slows your speed down
Very hard to set up and constant slow speed even on nbn
Not very happy with our nbn provider giving us this modem as its been bad since we got it. We get speed around 2-4 mbs but have a speed of 40 nbn and it's actually been the modem slowing it down. Had two replacements the second did well at first but back to the same and the tec support is shocking
To be completely honest, the router isn't so bad, when it's working. Constant dropouts and low signal strength don't help. The inbuilt control panel is full of options that have been blocked (that would make it a much better router) and that really rubs me the wrong way. Sad, just sad.
Great Modem - Easy Install
Arrived on time promptly form Optus, set up was very easy also. Sleek modern look also. The connection has been great, doesn't drop out at all. Perfect size and easy to hide in plain sight. Optus has done a great job with the nbn connection also, couldn't be happier. Entire process was smoothe and communication was great also. Answered all our queries about modem/nbn and helped us understand the best possible bundle for our new home.
just terrible terrible terrible
Cannot speak more lowly of this router's performance. Constant dropouts and speed loss over both wireless and wired connections across all devices we tried (tablets, phones, media boxes, desktops and laptops). Went through weeks of NBN issue diagnoses with Optus only for all our problems to vanish when we replaced our router with one we bought ourselves. If you are having problems with this router on Optus then firstly check your speeds are okay to make sure it's not the line but then at least borrow another router to see if that improves things. If you are anything like us it most likely will.
Very easy installation, and the coverage of wifi is not really, i checked with my neighbor and she can use it as well, just I am not happy with the size compare to other modems this one is really big, i had one of them for 2 years and now get a new one
daily reset, black spots, hangs and dropout for no reason
Ring Optus Tech so many times I have lost count. Ever since the so call upgrade from Netgear to Sagemcom it has been a nightmare. The Sagemcom modem/router has constant dropouts and you just have to keep on resetting it the POS. Doing a search I see everyone complaining to Optus about it and if they can replace it (which I have tried)
Service at Optus is getting worst, don't care if you are stuck with a bad service since you sign up on a 24mth contract. I am hoping to get out soon and never returning to Optus.
Wifi constantly drops out even after being restarted,
Speeds are slow
Qos is garbage even with 50mbps FTTP
Horrible modem - stay away
Now I have to figure out what modem to buy that's compatible with my phone. What a joke. Optus really dropped the ball on this one. Significantly disappointing.
Tried Five and ALL Died
Supplied with this router/modem through Optus. Over past 2 years 5 have been supplied as they all crap out. The latest has only lasted 2 months. Optus want to send me a replacement - WHY??? Do they think that ‘number 6’ will be any better? These are RUBBISH. Who would keep replacing something SIX times with exactly the same model after it keeps failing?
I’ll be calling the Telecommunications Ombudsman for a nice little chat ... Farewell Optus and your pathetic modem, unreliable internet and questionable customer service. Enough is enough. The Sagemcom F@ST 3864 AC is not worth the cardboard box it’s packed in. Landfill deserves better.
Constant Wi-Fi dropouts
I used to have a Netgear CG3000v2 modem supplied by my ISP and it was very reliable. Until i was 'upgraded' to a Sagemcom F@ST 3864AC. All i experience is Wi-Fi dropouts and have to turn off and on my modem at least 5 times a day. I thought it may have been just a faulty modem until i got a second modem and i experienced the same problem. There is nothing wrong at all with a cable connection with this modem but the wireless connection is an absolute joke. Tried everything from turning off and on the modem and rebooting it all the way to changin...g wireless channels, and still no stable solution. I would strongly recommend to steer clear from this modem, or if you are going to use this modem, do so for cable connections only - which is kind of weird for this day and age. I miss the reliability of my Netgear CG3000v2 modem, the days where stable wireless connections existed. Please do not get hyped up over receiving this modem as i always look forward to upgrades, however i was very disappointed and am eager until my ISP offers a more reliable modem.
Absolute worst thing I have ever had. Needs to be constantly reset. Works for a little while before having to be reset. Optus is a joke for giving me this crap. Isn't the first time I have had this experience with a Sagecom. Will now need to go spend $150 on a Netgear.
Frequently Wifi Drop Outs
This is my third router supplied by Optus. It seems all their Sagemcom router have cheap quality wifi connection. The only reason I gave 2 star as wired is okay. Frequent drop outs on the wifi even stting less than 5 meters. When Optus Customer Service called, was told it is alright upto 6 meters and anything above must have a booster. If thats the case why what is the use of tge wifi with 2.4ghz and 5ghz. dies not make sense. I also called the manufacturer and was told their cant help as to contact Optus directly. Made so many calls to Optu...s and each service agent just trys something new and still same issue. Have gone back to my original router which also bad but much better . Why cant the tecos supply with some decent router. Have ordered a decent booster over Ebay and hope it works.
Honestly? I think the joke's on us. What were Optus thinking?
The Sagemcom F@st 3684AC is an absolute dog of a router when it comes to wireless range. I live in a medium sized house and the signal in my bedroom, which is literally10 meters away is unusable and I've had to set up an old Netgear wireless modem router in my daughters bedroom next door just to get decent speeds, even if it is just Wireless N. If you have a large family or lots of internet connected devices, (as most of us do these days), it becomes even more alarming because believe it or not, this hunk of junk can only accept a maximum of 16...simultaneous connections. I cant believe that Optus are so technologically challenged in thinking that providing a device with such limiting performance and specifications on a brand new NBN network is doing right by their customers. Hell, it doesn't even support MU-MIMO, probably not even MIMO for that matter, although it does have beam forming technology, (wow), although, as stated earlier, the wireless performance over any distance more than 10 meters is so bad that beam forming technology is probably a useless feature. Also, wireless speeds drop off badly when multiple users connect because it doesn't have the grunt or MIMO to service wireless connections individually. But in my opinion, the most frustrating thing about being connected to Optus HFC and having a very fast connection, is that I cant use a BYO wireless modem router to take advantage of the speeds, rather, I'd need to buy a good wireless router to use as an access point to get really high speeds everywhere in the house, and they aren't cheap.
An OK ISP provided modem/router
As a modem/router offered by Optus, this does the job. An average user is not going to have many problems. However, any advanced user is going to immediately want to replace it. The signal range leaves something to be desired (I have a secondary router upstairs acting as a access point through power line). Whilst it does have some advanced preferences, it doesn't offer nearly as much customisability as open source firmware such as Tomato or OpenWRT (which isn't ported to this modem as of writing).
Questions & Answers
Will this work for NBN
It was standard issue modem around two years ago with Optus NBN. It will work with any provider as it is a generic modem. Ethernet output cable from NBN ARRIS box goes as input this modem. Note the NBN coax cable does not go into this modem.
my wifi extender WN2500RPv2 no longer works after the sagecom nbn modem was installed. Tried resetting via WSP and web but does not fix the problem. Ios device also cannot pick up connection with extender and keeps giving wrong IP address. Do i need to configure something on Sagecom modem ? Do i need to add MAC address etc ?
Is the Sagemcom new? If so, I think you have to configure everything to suit. I have a Sagemcom and its wifi is useless - keeps dropping out. I still use the Sagemcom for the phone landline but I hardwire another router from for my wifi
Thanks for reply. Yes, Sagecom modem is new; was provided as part of change from cable to NBN and was set up by service provider. What do I need to change in the configuration ?
Along with the Segemcom modem, I am using Netgear R6400 AC1750 Smart WiFi router, there is no issues so far.
does this router have voip capability
Yes. I plug my landline into it and seems to work ok. Just the wifi part isn’t much good
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|Category||Routers and Modems|
|Product Type||Modem and Router|
|Wi-Fi Type||802.11 b, 802.11 g, 802.11 n and 802.11 ac|
|Band Type||Dual Band|
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