Re: Data transfer throu phone line

On Mon, 21 Apr 2008 20:03:53 +0100, "CWatters"
<colin.watters@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:


"PowerOne" <salazar.willy@xxxxxxxxx> wrote in message
news:fce734ce-76ba-4425-a866-4f119f5a37a5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi,
I need to get the count of mechanical counter like used in spending
machine.
And when requested in main computer get the count using a phone line.

Can someone give a suggestion, any device that could help me?

---
Your system needs to do this:

LOCAL END FAR END

go off-hook
detect dial tone
dial remote number -----------> detect ring
listen for DTMF #... go off-hook
detect DTMF # <---------------- send DTMF # (BOT)
send DTMF # (ACK BOT)---------> detect DTMF #
receive DTMF data <------------ send DTMF data
receive DTMF * <--------------- send DTMF * (EOT)
send DTMF * (ACK EOT)---------> receive DTMF *
go off-hook go off-hook
process data

By the way, I have Google Groups filtered so the only reason I saw
your post was because someone else posting directly to USENET
responded to it.

Consequently, if you choose to respond to this post I won't be able to
see it either unless someone else also chooses to respond to your post
or you get yourself a proper newsreader and a Usenet provider.

JF
.