[plug] phone line interference

[John Summerfield]

On Fri, 27 Nov 1998, Peter Robinson wrote:

> On Fri, 27 Nov 1998, John Summerfield wrote:
> > Do remember, to, that 56K modems are 56K in one direction. Outbound data is
> > sent at the same speed as achieve by my 33k6 modem.
> > 
> > two 55K modems talking to each other will be no more speedy than two 33k6
> > modems (unless they have better error recovery).
> > 
> > IAPs achieve 56 outbound by using fancy digital hardware to connect to
> > Telstra's digital network. Those of use using modems talk analog to
> > Telstra's digital network and our analog signal has to be converted to
> > digital. This A/D conversion costs speed.
> 
> Using the above point, and the fact that two of the three points that data
> travels along have to be digital ie exchange <-> exchange <-> ISP. If you
> have an ISDN Line and dial into it using a 56 K Modem could you get a 56
> connection or isn't this possible.

I don't know just what the hardware has to be at the 56K end, though no
doubt the good folks at open, iinet, wantree etc do.

I do not know whther ISDN qualifies as "fancy digital hardware."
> 
> Peter
> 

Cheers
John Summerfield
http://os2.ami.com.au/os2/ for OS/2 support.
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