DSL bonding

[Jim]

150 Mbps, you're lucky.  Here AT&T has to bond  2 pairs so I can get 25 
Mbps.    At least it's not comcast.  I wonder how many pairs they could 
bond.  Is there a technical limit or is it just a matter of how many 
they want to bond?  As more people abandon landlines, that leaves more 
capacity for AT&T to bond multiple pairs for internet customers.

On 8/10/20 11:21 AM, Michael Butash via PLUG-discuss wrote:
> So I went through this moving from Cox to CenturyLink, and pretty much 
> as described, fairly painless.
>
> <tldr>
>
> I had scheduled a CL tech to install me for new service a few years 
> ago, and we first hit the outside where CL ran their cabling in.  It 
> was an ancient telephony distribution from the 90's, and I've never 
> had a land-line in my house since owning it in 2002.  My house built 
> in 95 at least used cat5 or like, so I have 4 pairs to every room, so 
> 2 pairs I need was just fine for bonded DSL  He ripped out the old 
> block, removing the house cabling but the one, and isolated the 
> particular line we needed to my office where the modem lives, added an 
> approved jack, done.  Bonded dsl is 2x 2-wire channels, and they 
> essentially load-balance 75+75mbps channels.  I have tested this to 
> n-by gigabit upstreams.
>
> Phone only guarantees 2 wires are available, so telcos built on this 
> 100 years ago are a bit assed-out on passable high-frequency 
> modulation schemas in use for data and other things to move beyond 
> where they're at.  DSL makes up for this, particularly when double up 
> on wires it gets better, but still unshielded and prone to breakdown.  
> Problem is mostly it isn't shielded, thus capable of very high 
> frequency modulation ala Cable/DOCSIS, so it will never go much 
> further than it has today whereas Cable scales to gigabits with 
> channelization and QAM modulation at 32bit rates.
>
> VDSL tech is capable of roughly 75mbps per channel, and 2x of these 
> get you to around CL's bonded DSL limits.  This also includes your 
> distance limitations to your local DSLAM, or regional router that 
> terminates your data that degrades this eventually further you are 
> from it, so it's a bit tricky. It's been stuck here for years, and 
> pretty much at life end. This is why my cousin living half a mile from 
> me can only get 75mbps from CL and I can with bonded @150mbps here.  
> Old crap network there.
>
> Fiber, particularly Single Mode, gives you whatever to ~100GbE, but 
> depends on how your provider does low-rate Passive Optical Networking 
> (PON) today for residential fiber.  Not quite the same as a business 
> data network, but any fiber is better than copper networks.
>
> Why Centurylink's only hope for the future is fiber vs. copper in new 
> builds.  I like my 25yr old house still, so no fiber for me ever.  
> Unless I street cut my block for fiber myself, which I've considered, 
> just need to get my neighbors to buy into me as their new gigabit isp.  ;)
>
> -mb
>
>
> On Sat, Aug 8, 2020 at 1:27 PM Jim via PLUG-discuss 
> <plug-discuss at lists.phxlinux.org 
> <mailto:plug-discuss at lists.phxlinux.org>> wrote:
>
>     Ok.  I won't complain if I have to go out and buy a 4 conductor
>     phone cord.
>
>     On 8/7/20 9:05 AM, Stephen Partington wrote:
>>     My understanding of this is that they will activate the second
>>     pair that is commonly used in the RJ-43 port in your wall. This
>>     will allow 2 lines active to the device.
>>
>>     Changes inside might need to happen if your residence does not
>>     have 4 wire (2 line) compatibility. (IE 2 pairs to the jack vs 1
>>     pair)
>>
>>     On Thu, Aug 6, 2020 at 9:10 PM Jim via PLUG-discuss
>>     <plug-discuss at lists.phxlinux.org
>>     <mailto:plug-discuss at lists.phxlinux.org>> wrote:
>>
>>         Where I live, I get AT&T for my DSL service.  I've signed up
>>         for an
>>         upgrade from 10 Mbps to 25.  I finally got someone there who
>>         would tell
>>         me why a technician visit is required for the upgrade.
>>         They're bonding 2
>>         pairs to supply the faster speed here.  I've read up online
>>         about DSL
>>         bonding.  I understand that one pair will carry some of the
>>         data, and
>>         the other pair will carry some.  But one thing I didn't find
>>         out was
>>         whether or not anything will change between the wall jack and
>>         the
>>         modem.  Is everything done outside or do they have to come
>>         inside?  I
>>         currently have a 2 conductor cord connecting my modem to the
>>         wall jack.
>>         Will that have to be replaced with a 4 conductor cord?  Do
>>         they install
>>         an extra box outside or inside?  I guess all will be answered
>>         on the
>>         18th when the guy is scheduled to be here.   I'm really
>>         curious how this
>>         works.
>>         ---------------------------------------------------
>>         PLUG-discuss mailing list - PLUG-discuss at lists.phxlinux.org
>>         <mailto:PLUG-discuss at lists.phxlinux.org>
>>         To subscribe, unsubscribe, or to change your mail settings:
>>         https://lists.phxlinux.org/mailman/listinfo/plug-discuss
>>
>>
>>
>>     -- 
>>     A mouse trap, placed on top of your alarm clock, will prevent you
>>     from rolling over and going back to sleep after you hit the
>>     snooze button.
>>
>>     Stephen
>>
>     ---------------------------------------------------
>     PLUG-discuss mailing list - PLUG-discuss at lists.phxlinux.org
>     <mailto:PLUG-discuss at lists.phxlinux.org>
>     To subscribe, unsubscribe, or to change your mail settings:
>     https://lists.phxlinux.org/mailman/listinfo/plug-discuss
>
>
> ---------------------------------------------------
> PLUG-discuss mailing list - PLUG-discuss at lists.phxlinux.org
> To subscribe, unsubscribe, or to change your mail settings:
> https://lists.phxlinux.org/mailman/listinfo/plug-discuss
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.phxlinux.org/pipermail/plug-discuss/attachments/20200815/ed8af029/attachment.html>