Re: Phone lines

[Dennis Jenkins <dennis@usb.com>]

Paul Schlyter wrote:
> 
> > This is because there are 8 bits in a byte
> 
> Depends on the byte size -- in various situations, bytes can be between
> 5 bits and 12 bits in length.

The 8 bit specific word is "octet"

> 
> > plus two which are used by the modem for control purposes.
> 
> ...or three if you configure your modem for two stop bits instead of one.
> 
> much faster than that within 3000 Hz bandwidth).  However, by special
> modulation techniques made possible by digital signal processors, the
> modem can squeeze up to 57.6 kbits/second on that 2400 baud carrier.

Quadrature(sp?) Phase Shifting.  Wow.  I remember that from my college
networking class.  In CS 285, we did not start with TCP, we started with
raw pulses on a wire and worked all the way up to network security and
IP tunneling.


-- 
dennis@usb.com                           Universal Savings Bank.

The three most dangerous things are a programmer with a soldering
iron, a manager who codes, and a user who gets ideas.