DSL help plz.
dugan at libwais.sonoma.edu
Tue Dec 28 13:33:03 PST 1999
On Tue, 28 Dec 1999, Rick Moen wrote:
> Subject: Re: DSL help plz.
> Quoting ME (dugan at libwais.sonoma.edu):
> > If you are dead set on the idea of serving from home, then T1 offers
> > 1.544 Mbps at full duplex, or SDSL (in some areas) offers
> > bi-directional identical speeds, but still are not full duplex...
> My building's service is SDSL (through Northpoint and Best Internet),
> and it's definitely full duplex. We switched to that from T1, and saw
> no difference in connection-latency.
Ys this is likely to e the case. A T1 is likely to outperform SDSL when
uploads and downloads both approach 1.544Mbps. In today's environments,
SDSL works ok for may people running a mostly DL service while a full T1
works better to tie together two LANs which are both likely to exchang
Another form of xDSL called (I think) HDSL is supposed to be better than a
T1 in that it can allocate up to 8 or 9 Mbps aggregate pipe-size which can
be dynamically converted to emphasize uploads, downloads, or be equal both
ways. (1Mbps DL, and 8Mbps UL for example or 8Mbps DL, and 1Mbps UL.) I
have not seen HDSL is use here locally, but there was talk of its use in
Seattle about 1 year ago.
Even if it is not true "full duplex", 8 to 9 Mbps is fast enough to
simulate a pipe aster than a T1.
SDSL and HDSL frequently cost more than ADSL.
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