[rescue] Looking for an IPX
adh at an.bradford.ma.us
Mon Dec 9 06:40:05 CST 2013
" From: "Sheldon T. Hall" <shel at artell.net>
" Quoth Peter Stokes ...
" > But is ISDN of use anymore, in the UK BT charge serious money
" > for the service now as definitely not a preferred service?
" I suppose there are places in the US where you can't get any land-line-based
" Internet service except dial-up or ISDN, but I expect they are getting rare.
" DSL is getting wide-spread, even in the semi-boonies.
i think it can be fairly said that isdn evolved into dsl on more than
one technical level. residential isdn was never popular here but
t1-speed isdn-pri for pbxes is, first sdsl, then differently-coded
hdsl, and now shdsl, 5.7Mbps on each of 1 to 4 pairs, and it can carry
atm cells or ethernet packets [frame relay?] as well as isdn xB+D.
btw right from the start, if you ordered a t1 you were likely to get a
sdsl with converters, cheaper for the telco.
and then consumer-targeted adsl/adsl2/adsl2+/vdsl/vdsl2 etc, some of
which can also bond multiple pairs.
Andrew Hay the genius nature
internet rambler is to see what all have seen
adh at an.bradford.ma.us and think what none thought
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