Subj : R50 Host :-)
To : Benny Pedersen
From : mark lewis
Date : Mon Oct 29 2007 11:34 am
ml> there was as much or more of a market for 64k dual channel ISDN in
ml> the US as anywhere else in the world... too bad the US teleco bean
ml> counters are/were so st00pid 8?
BP> dont know why there just was 56Kbit in us, in rest of the world it
BP> have always being 64bit pr channel,
the US had both... it just depended on who your teleco was... they way they got
56k is/was quite simple, too... it is called "bit-robbing"... they were
stealing one bit for every X many so they could build another connection "for
free"... we saw this bit-robbing being done on regular POTS lines, too... some
setups would never connect better then 9600 over their POTS lines, no matter
how good the lines were or how good their modem was... why? bit-robbing... they
were encoding everything in 7 bits which was redusing the max connect rate...
that 8th bit? well, with 7 calls going, those 7 8th bits from each gave the
telco another call path that was 7 bits wide and they got it for free...
