AVR-Chat

Hello Dave,

Yes, it is Bell 202 and on a standard dialup.  We have a PDT that will
replace the old Telxon acoustical terminals that have not been manufactured
since the mid-90's.  Did you know that at any given time there is over 500K
of these terminals in use today?  I was surprised by that number.

Anyways, my boss swears that back in the telxon days when he was in the
field they used to use a Datascope of some kind that showed the signal and
the data on the screen.  I am not sure if he meant the RS232 signal or the
telco side.

Thanks,
Dave Miller

> -----Original Message-----
> From: David VanHorn [mailto:dvanhorn@cedar.net]
> Sent: Friday, April 09, 2004 3:23 PM
> To: AVR-Chat@yahoogroups.com; AVR-Chat@yahoogroups.com
> Subject: Re: [AVR-Chat] [OT] Test equipment question
> 
> 
> >
> >I am not up to speed on all the meanings behind some of the telco
> terminology so when I look at the equipment that is available now I can t
> find something that simply allows me to plug in my telco line then pass it
> on to the modem.  Or lets me tap into my RS232 line and displays the data.
> There is a lot of fancy equipment that is designed for T1, DSL, etc& but I
> can t seem to figure out if it will do something this simple.
> 
> AFAIK, there isn't any such beast.
> 
> Are you sure you mean 202 as opposed to 212?
> 202 is FSK, for four wire interfaces.
> 212 is phase modulated, for dialup use.
> 
> 
> I did a box for 212 years ago, using a pair of modem chips and an
> inductive coupling for debugging point of sale terminals.
> 
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>