4D serial port help requested

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2 total messages Started by craig Sun, 13 Sep 1992 01:01

#305

Author: craig
Date: Sun, 13 Sep 1992 01:01

28 lines
1410 bytes

	The title pretty much says it: I'm trying to implement a simple
 modem dial command procedure, and cannot get the modem to respond.
the description of the SET CHANNEL Command tells me that the following
code should work (at least, that is how it looks to me) COuld someone 
critique this ? All I  want to to is dial my creaky old 1200 baud modem,
although it would be nice to get the modem's responses to.I am using a
Hayes compatible modem.

` function: dial_modem
` synopsis: dial string passed in
$channel:=1` modem port
$channel:=$channel+20` xon/off->20 (dtr=30)
$setup:=94` speed = 1200->94 (2400->46;96->10)
$setup:=$setup+3072` 8 bits (7->1024)
$setup:=$setup+16384` 1 stop bit(1.5->-32768;2->-16384)
$setup:=$setup+0` no parity(od->4096,even->12288)
` or, example says 8 bits, no parity, 1 stop bit at 1200 = 27742
`$setup:=27742
SET CHANNEL($channel;$setup)
$number:=$1` put code to strip out junk from number here
SEND PACKET("ATDT"+$number)


  thanks for your comments & suggestions,

	Craig Schwartz
	craig@hyperion.loni.ucla.edu

Re: 4D serial port help requested

#306

Author: Mike Hennahane
Date: Sun, 13 Sep 1992 21:05

13 lines
935 bytes

craig@hyperion.loni.ucla.edu writes:

[trying to get modem to dial from 4d...]

>$number:=$1` put code to strip out junk from number here
>SEND PACKET("ATDT"+$number)

you need to append a carriage return to the end of your "ATDT" packet
to make the modem dial. you might also think about having the modem
turn off after you pick up the phone so that it doesn't keep the phone
off the hook after you hang up.

--mike

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