[plug] serial cable length (was: PPP Connection)

[Denis Brown]

Matthew Skinner and Leon Brooks contributed thoughts on cable length for RS232.

There is a page at http://www.connectworld.net/cable-length.html describing 
recommended maximum spans for various protocols.  In the early days when 
9600 bps was in the outer limits of communication speed 50 feet, about 16 
m, was recognised as the limit.  I saw a 1200 bps link working over 700 m 
with xon / xoff  for flow control but the signals were just little 
half-sinusoidal blips.  Miracle that it worked!

Cheers,
Denis