At 06:53 PM 1/22/06, you wrote: >--- In [email protected], "Steve Bosshard" ><[EMAIL PROTECTED]> wrote: > > > > I wonder if you could use a dial up modem and atdt commands? Just a > > thought, > >Sure.. You need a little interface to supply loop current and present >600 ohm impedance, but that's not too hard. A 40mA constant current
40 is a little high, some modems choke and distort on line current over 35 mils. I target 25 to 30 mills. >source will do, with 600 ohms resistor in series with a large-ish cap >across, and an AC coupling cap to take the audio out. This web page will help: <http://www.repeater-builder.com/scom/controllerdirectprogramming.html> >Some modems will work without the loop current, some won't. That web page is oriented to those that don't, but it covers the situation of those that do. >In many cases, you'll have to find the command that says to ignore dial >tone. True. This is also covered. >IIRC, ATDM, on old hayes modems, will dial morse code. The 1200 baud Hayes will do this, the 2400 I've never tested, the 56 will not (the firmware space was needed for the 56kb encoder/decoder programming) I'd love to find a PDF of the 1200 Hayes morse commands that I could upload and link from the web page. Mike Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
