Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

Is this a good modem for Comcast? Do you have any other suggestions?


  • Please log in to reply
31 replies to this topic

#1 Dark Magician Girl

Dark Magician Girl

  • Members
  • 230 posts
  • OFFLINE
  •  
  • Local time:10:49 PM

Posted 08 April 2015 - 07:05 PM

I had Comcast send me a newer modem to upgrade my Motorola SURFboard SB5100. They sent a Technicolor TC8305C. I setup the device according to Comcast's included instructions. The lights on the modem and router, Windows, and Android all indicated I was successfully connected to the internet, but none of my internet-facing programs worked. I am probably going to request another modem, and I figure I would use this opportunity to get feedback on different modems.

 

Does "Retail" in parenthesis at http://mydeviceinfo.comcast.net/ mean those modems are unavailable through Comcast and can only be obtained by purchasing them from other parties? I wonder because I vaguely recall someone saying they got a Motorola SB141, which has "Retail" next to its name, from Comcast. The Motorola SB6141 and SB6183 seem to be highly rated, so I am hoping they are available through Comcast.


Edited by Dark Magician Girl, 08 April 2015 - 07:08 PM.


BC AdBot (Login to Remove)

 


#2 mainer21

mainer21

  • Members
  • 122 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Oregon
  • Local time:07:49 PM

Posted 08 April 2015 - 08:56 PM

A "retail" modem color is white. The modems that Comcast rent to their customers is black. Amazon sells both. The black modems are recondition and generally fail shortly after the warranty ends,1 year. Buy your modem instead of renting and save $10.00 a month.

 

http://www.howtogeek.com/186941/buy-your-cable-modem-instead-of-renting-it-to-save-4-8-per-month/

 

Comcast DOCSIS Device Compatibility and Capability

http://mydeviceinfo.comcast.net/


Edited by mainer21, 08 April 2015 - 09:00 PM.


#3 Queen-Evie

Queen-Evie

    Official Bleepin' G.R.I.T.S. (and proud of it)


  • Members
  • 16,485 posts
  • OFFLINE
  •  
  • Gender:Female
  • Location:My own little corner of the universe (somewhere in Alabama). It's OK, they know me here
  • Local time:10:49 PM

Posted 08 April 2015 - 09:47 PM

You are correct. If it says Retail, it can be purchased.

The only thing I can think of to ask if did you get the modem activated?


I suggest you post in the Comcast Help Forums.

Those Forums are provided to Comcast customers, and are a great resource for vendor specific issues. There are Forums for computer issues, email issues, security, internet, cable tv, CDV, billing, and customer service.
Many times we, the users there, can provide answers tech support and customer service can't.

Click the link below. The forum landing page will open. Click Sign In. Log in with your Comcast user ID (the part before .net) and your password. You will next see a first time forum users page, asking you to choose a screen name for use in the Forums. Once you set that up, you'll be taken back to the landing page. PLEASE DO NOT USE YOUR COMCAST EMAIL NAME FOR YOUR FORUM USER NAME.

http://forums.comcast.com/

Before posting, take a moment to read the Posting Guidelines. The link is on the top right hand side of the page.

Then choose the appropriate board to post in. In your case ask in Basic Internet Connectivity And Modem Help.

One thing to be aware of: By default you will be notified via email every time someone replies to a topic you have started or replied in. If you do not wish to receive the notifications you can disable them by clicking My Settings/Subscriptions & Bookmarks tab. Uncheck the box next to Automatically subscribe me to topics I participate in. Scroll down and click Save.
DO NOT USE THE UNSUBSCRIBE LINK IN THE REPLY NOTIFICATION EMAIL. Due to a quirk with Lithium, the forum provider, if you use the link it severs the connection between your forum user name and the email address you sign in with.


Result: your forum account no longer exists in the database and it tells you that you are banned.

(Once you get to the forum, save the page to your favorites/bookmarks. If you want to get to it from the Comcast home page, you have to jump through hoops to reach it)

#4 MrCharlie

MrCharlie

  • Security Colleague
  • 174 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Central New Jersey USA
  • Local time:11:49 PM

Posted 09 April 2015 - 06:56 AM

I have Comcast (own my modens) and just replaced my modem with the Motorola SURFboard SB6121. Upgraded from DOCSIS 2 to DOCSIS 3. About $70, works great.
I also purchased a extended 2 year warranty for $6.

MrC

#5 technonymous

technonymous

  • Members
  • 2,516 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:08:49 PM

Posted 09 April 2015 - 08:34 AM

If you are on Blast plan which has been upgraded to 105/10 speeds. That SB5100 will fail miserably. You have to get the SB6121 DOCSIS 3. If your router is still 10/100 that needs to be upgraded as well. Be sure to get a router that says 10/1001000 or 1Gbit on the WAN/LAN all 5 ports.



#6 coxchris

coxchris

  • Members
  • 1,151 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Atwater
  • Local time:08:49 PM

Posted 09 April 2015 - 10:29 AM

I have Comcast and still on the 10.00 per month if you decide on a modem I would go with the http://www.amazon.com/ARRIS-Motorola-SurfBoard-SB6141-DOCSIS/dp/B00AJHDZSI/

 

SB6141 

 

If you have any voice teirs you will need to upgrade the modem with telephony support because SB6141 doesn't have the telephone jack. 


AA in Computer Networking Technology

BS in Information Technology 

Comptia A+, Project+, L+

Renewable:  N+,S+

CIW Web Design Specialist, JavaScript Specialist,  Database Design Specialist 

LPIC-1, SUSE 


#7 Dark Magician Girl

Dark Magician Girl
  • Topic Starter

  • Members
  • 230 posts
  • OFFLINE
  •  
  • Local time:10:49 PM

Posted 10 April 2015 - 10:27 PM

But if a modem has "retail" next to its name, does that mean the modem cannot be leased from Comcast? I considered going with my own modem, but the connection is not under my name, thus isn't my call. The person whose name the connection is under did not seem interested when I mentioned getting our own modem. I did not think I needed to call to have the modem activated because I am an existing subscriber and I am leasing a modem from Comcast. Further, the instructions do not say I need to call Comcast to have the modem activated. I have the performance package (25 Mbps download and 5 Mbps upload), although my download speeds usually top out around 15 or 16 Mbps. My connection also lags often while I am torrenting and using less than half of my bandwidth. I will wait until I try out a newer modem before getting help with this, though. My current router is the D-Link DIR-615. Should I replace the router with a newer model? 

 

I think this covers everyone's post. I will wait to read responses before posting on Comcast's forum. 


Edited by Dark Magician Girl, 10 April 2015 - 10:35 PM.


#8 technonymous

technonymous

  • Members
  • 2,516 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:08:49 PM

Posted 11 April 2015 - 08:07 PM

Comcast is irritating to deal with. They sent you the new modem/router/voice box because it's better. Your SB5100 is outdated and your D-Link is outdated. Your routers LAN/WAN ports are 10/100 speed. Just so you know the performance package has been upgraded to 50Mbit down. You're paying for 1/2 the speed you could be getting. So your options are use the equipment they sent you at $10 lease, or buy the same device at $200. Or buy a SB docsis modem and router seperate for around the same price. Be certain that the router or modem/router combo says that it's LAN/WAN ports are 10/100/1000 or 1Gbit. That is very important. If you want to stick with N speeds you can get routers with all the bells and whistles. However, since you are planning or deciding on buying new equipment I would buy into a wireless 802.11AC router. As a side note the Technicolor TC8305C or XB3 they sent you is 802.11AC both 2.4ghz & 5ghz dual band. If you call Comcast for support hooking this up be ready to pay $70 dollars for that. If you don't have voice or have computers that have AC wifi adpaters in them and everything is still Wireless N then IMO I would go with a SB6120 or SB6121 and then buy a Netgear router WNDR4300 and above. For 802.11AC speed I would get the netgear NightHawk.


Edited by technonymous, 12 April 2015 - 07:48 PM.


#9 Dark Magician Girl

Dark Magician Girl
  • Topic Starter

  • Members
  • 230 posts
  • OFFLINE
  •  
  • Local time:10:49 PM

Posted 13 April 2015 - 06:03 PM

Comcast is irritating to deal with. They sent you the new modem/router/voice box because it's better. Your SB5100 is outdated and your D-Link is outdated. Your routers LAN/WAN ports are 10/100 speed. Just so you know the performance package has been upgraded to 50Mbit down. You're paying for 1/2 the speed you could be getting. So your options are use the equipment they sent you at $10 lease, or buy the same device at $200. Or buy a SB docsis modem and router seperate for around the same price. Be certain that the router or modem/router combo says that it's LAN/WAN ports are 10/100/1000 or 1Gbit. That is very important. If you want to stick with N speeds you can get routers with all the bells and whistles. However, since you are planning or deciding on buying new equipment I would buy into a wireless 802.11AC router. As a side note the Technicolor TC8305C or XB3 they sent you is 802.11AC both 2.4ghz & 5ghz dual band. If you call Comcast for support hooking this up be ready to pay $70 dollars for that. If you don't have voice or have computers that have AC wifi adpaters in them and everything is still Wireless N then IMO I would go with a SB6120 or SB6121 and then buy a Netgear router WNDR4300 and above. For 802.11AC speed I would get the netgear NightHawk.

 

• Are you sure the performance package has been upgraded to 50Mbps download? Where did you find this out? When I requested an updated modem from Comcast via chat, I also inquired about my internet package. The Comcast representative said I have the performance package, which is 25Mbps download. The Comcast website also lists the performance package as 25Mbps download.

 

Edit: I read about the upgrade, but it seems to be limited to certain areas, which would explain why the Comcast representative said my download speed is 25Mbps. If I do not get greater speeds with the new modem installed, I will have to contact Comcast about it. It would be absurd if others are getting 50Mbps download with the performance package at no additional cost while others are restricted to 25Mbps. I expect this will be a universal upgrade, and they are just transitioning. 

 

• I don't know anything about wireless networking standards. I read that 802.11ac offers greater maximum speeds, but what good is that speed if my internet connection isn't that fast? How would 802.11ac benefit me on a 25Mbps or even a 50Mbps connection? 

 

I am not sure if my Kindle Fire HD 8.9 and iPad support 802.ac wireless. My desktop uses a USB wireless adapter that does not support 802.11ac wireless, but I have wanted to replace the adapter anyway because it does not play well with wireless encryption. I also need to get a new computer in the future, so it may be best to invest in an AC wireless router now instead of buying a second router later. Having said that, NETGEAR Nighthawk is a bit pricey at almost $200. Is there anything you would recommend that is closer to $100? What about the TP-LINK Archer C5? Micro Center also has the TP-LINK Archer C8 for $110. 

 

• Do I really need to pay Comcast to help me setup a modem that I am leasing from them? That would be absurd. 


Edited by Dark Magician Girl, 13 April 2015 - 06:43 PM.


#10 technonymous

technonymous

  • Members
  • 2,516 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:08:49 PM

Posted 14 April 2015 - 01:39 AM

That rep is not correct then. They been rolling this out since april of last year. It could be that your area hasn't upgraded yet. I would speak with a different rep and say that you heard performance has been upgraded to 50/5 and see what they say. I do know that your hardware is what's limiting your connection. Your pc or whatever needs a 1Gbit network card, new router that has 1Gbit on all 5 ports LAN/WAN. Docsis 3 modem will have 1Gbit port on it. I use to have Blast 50/5 now I have 105/10. I actually get better than that 124/13 to be exact on off peak hours. A docsis 2 modem I would only see about tops 40mbit on a good day. Usually it was more 30-35. The upload was anywhere between 3-5.

 

Yes, the wifi is higher speeds, but if you're going to buy a new router why buy into a aging wireless N router? You will have to upgrade network cards if you want to take advantage of AC speeds though. Those speeds are across the local lan. Of course you would be limited by your internet Comcast speed. The TP-LINK Archer C5 seems to be a good one and has AC. Amazon $89 http://www.amazon.com/TP-LINK-Archer-C5-Wireless-Gigabit/dp/B00JZFG6QS/ref=sr_1_1?ie=UTF8&qid=1428992156&sr=8-1&keywords=tp-link+archer+c5 I think it's a steal for that price. Now if you want higher speeds you need a docsis 3.0 modem. SB6120 and above. Again, the modems get better the more money you spend. Reason for that is that they have better download and upload channel bonding. You may later upgrade and if you do then you might find yourself buying another modem. Something to think about. Overall computer speed can make your internet speed slow. If you are sitting on a potato for a computer then yeah you need a new computer lol.

 

Just saying that Comcast likes to slip in charges. Just be aware and check your online bill. If you call and complain they will remove it.

 

To me it makes no sense to send you a top of the line XB3 for 25mbit speeds and tell you that you have 25mb plan. To get better speeds you have call them. After you provision your new modem and set it up and check the speeds if you still get 25Mbit then ask WHY. The performance tier is 50/5. They will send the new config file to the modem. Be sure to tell them you bought your own modem and they will take the fee's off. However, you need to drop the modem off at the local office or box it up and mail it.


Edited by technonymous, 14 April 2015 - 01:42 AM.


#11 Dark Magician Girl

Dark Magician Girl
  • Topic Starter

  • Members
  • 230 posts
  • OFFLINE
  •  
  • Local time:10:49 PM

Posted 14 April 2015 - 02:26 AM

Ah, so you have Comcast, too Well, I'm leasing a modem, not purchasing my own. If it were up to me, I would probably purchase my own. The SB6141 seems like a great choice and it's $90. After I get the new modem hooked up, if I am not getting better speeds, I will contact Comcast about it. That is, of course if I can get the modem working. Thanks for pointing that out. While I knew I needed to upgrade my modem because it is outdated, I had no idea that the performance package's speed has been increased and by 100% to boot. 

 

Do you think the TP-LINK Archer C8 is worth the $20 more than the TP-LINK Archer C5? I understand that the TP-LINK Archer C8 has beamforming, which I read enables a router to concentrate the wireless signal and send it directly to devices' locations, while the TP-LINK C5 does not. 

 

I noticed you have been referring to the Technicolor TC8305C modem that Comcast sent me as "XB3." What is XB3? Does it actually support AC wireless? It says 802.11n on the side, and I cannot find any information about it online. 

 

Edit:

 

This is what I have: http://goo.gl/BcJP9b. I guess it's a gateway. AC wireless is not listed as being supported. 


Edited by Dark Magician Girl, 14 April 2015 - 02:33 AM.


#12 Dark Magician Girl

Dark Magician Girl
  • Topic Starter

  • Members
  • 230 posts
  • OFFLINE
  •  
  • Local time:10:49 PM

Posted 14 April 2015 - 03:39 AM

Oh, I see now. Modems do not need to support wireless standards. The Technicolor TC8305C is a gateway, which is why it supports wireless standards, although it does not support AC. I don't know why Comcast sent me a gateway even though I requested a modem. If I recall correctly, the representative said it is their latest. I just came across a thread on the Comcast forums. Apparently I need to put the gateway into bridge mode to use it with a separate router. I wonder if that was the problem. 



#13 Dark Magician Girl

Dark Magician Girl
  • Topic Starter

  • Members
  • 230 posts
  • OFFLINE
  •  
  • Local time:10:49 PM

Posted 14 April 2015 - 04:40 AM

Yes, that was precisely the problem. Comcast sent me a gateway, not a modem. Before I can use a separate router, I have to activate the gateway without it being connected to any router. Then, I can go into the settings and enable bridge mode if I want to use a separate router. Still, I am not getting anywhere near the speeds I should be getting, although it is an improvement. 

 

Image_2.jpg

 

Image_3.jpg

 

I am now getting about what I should have gotten all along before Comcast updated the performance package. It does not even come close to 50Mbps. 

 

Edit: I can use encryption now. The issue that prevented me from using encryption before must have been something else, not the USB wireless adapter. 


Edited by Dark Magician Girl, 14 April 2015 - 06:03 AM.


#14 Dark Magician Girl

Dark Magician Girl
  • Topic Starter

  • Members
  • 230 posts
  • OFFLINE
  •  
  • Local time:10:49 PM

Posted 14 April 2015 - 04:46 PM

I'm back down to 15-16Mbps in the evening...

 

Image_4.jpg



#15 technonymous

technonymous

  • Members
  • 2,516 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:08:49 PM

Posted 15 April 2015 - 08:34 AM

So you are using the Technicolor and bridged it so you can use your router? Your're still going to see that same speeds I'm affraid. I thought for sure the new one they sent you was AC and you're right it's N. A lot of places don't go into much details and probably for a reason to sell their junk to get rid of it. lol Not only that, I dug around more and finaly found a site that said 4 ports are Gigabit, and say nothing about the WAN being Gigabit. That's the problem. So basically they sent you a wireless router/modem combo with Gigabit on the LAN side. That doesn't help you at all. You're still stuck with the same problem. You have to have Gigabit throughout....cat5e cable, Gigabit network card, router, modem. A Gigabit Modem preferablly with 8 channel bonding. That's just silly they sent you a DOCSIS 3.0 modem with 10/100 on the WAN lol. You obviously have the new speeds because your upload is 6Mbits. The new speeds for Performance is 50/6.


Edited by technonymous, 15 April 2015 - 08:38 AM.





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users