[plug] phone line interference

[Peter Robinson]

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.

Peter