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Re: [OCLUG-Tech] Linux Digest, Vol 69, Issue 21

On Thu, Sep 30, 2010 at 01:43:08PM -0400, Dave O'Neill wrote:
> On Thu, Sep 30, 2010 at 01:33:41PM -0400, Peter Meyer wrote:
> > I might be misunderstanding what you are looking for.  Would you not be able
> > to take two Bell DSL line and from a Linux host use bonding to drive the two
> > Ethernet (ppp) interfaces?
> 
> No... with ADSL, he's still constrained by the crappy uplink (800kbit at 
> best).  Bonding or using MLPPP would just get him N times that crappy 
> uplink.
> 
> For those unfamiliar, the A in ADSL is Asymmetric, and refers to the 
> fact that your downlink is usually much greater than your uplink.  
> Standard ADSL in Ottawa is limited to about 5 megabit down, and 800 
> kilobit up. 

What would be closer would be RADSL or SDSL (the latter of which has
been deprecated and replaced with other technologies).

The original Sympatico DSL was RADSL (Rate-Adaptive Digital Subscriber
Line) which was 2.2Mb down/1.1Mb up.  This was closer to, but still not
Symmetric.

SDSL is in fact Symmetric, but all the standards I had seen were about
half the total bandwidth, so for a standard 6M/800k down/up, the
equivalent would have been 1.7M/1.7Mb.

A truly symmetric service has already existed for years, but it was much
more expensive: T1

There are other symmetric services that are higher bandwidth and less
costly than T1, but are hard to get.  The one I've been able to
identify, but unable to source, is G.SHDSL

There are 10Mbit services, but I don't know what constitutes their
underlying technology.

> Dave

	slainte mhath, RGB

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