Re: AX.25 Layer 1

[Dirk Koopman]

On 29-Sep-99 Tomi Manninen wrote:
> On Wed, 29 Sep 1999, Samuel A. Falvo II wrote:
> 
>> OK, we're getting somewhere.  Now where can I find out more about this? 
>> I'm
>> aware that bitstuffing is used, but how is NRZI applied?  Is 1200Hz the
>> mark
>> or the space?  Etc.
> 
> NRZI (or NRZ-S) is differential. A change in level is zero, no change is
> one.
> 

hence the need for bit stuffing...

Dirk G1TLH
--
Dirk-Jan Koopman, Tobit Computer Co Ltd 
At the source of every error which is blamed on the computer you will find
at least two human errors, including the error of blaming it on the computer.