[GreenKeys] Dataset tones?

[Jim Haynes]

On Sat, 1 Sep 2012, Jack wrote:

> 
> 1070/1270 HZ
> 
>  
> 
> 2025/2225 HZ
> 
That's the first part of the answer.  Now which pair is originate and
which pair is answer, and which of which pair is mark and which is
space.  You see the possibility of eight different, mutually-incompatible
services with those variables.  One was TWX, one was DataPhone, one was
to be WADS, one was to be WADS-prime (whatever THAT was) and there are
still four left over for other services.