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1987-07-13
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Ringer version 1.0
This program allows one to execute a batch file remotely from any telephone.
It is especially useful in using a phone line both for both voice and data
communications.
I wrote Ringer primarily for the purpose of being able to retrieve data from
my home computer while at work and still allowing my answering machine to
function and not deafen and confuse any people that may call on voice.
Ringer is designed to be used from a batch file. When called in the file it
will suspend subsequent operations until such a time that the program is
terminated remotely or from the keyboard. Hitting ^C twice will terminate
Ringer and cancel subsequent batch file commands.
Ringer waits for the phone to ring. Upon detecting a ring it waits for a
second phone call to come in the window of time between 30 seconds and
2 minutes after the first call. Detecting this second phone call, Ringer
will terminate and allow execution of the subsequent batch commands. If a
phone call does not come within two minutes Ringer resets to waiting for
the first call.
Usage: Ringer n , where n is the com port of the modem. Default is 1.
Sample Autoexec.bat:
Path commands
resident programs
ringer (default to 1)
GT1220 C:\GT\host.scr (where host.scr is a script to
put the program into host mode)
To activate the host mode of GT Powercomm one would need to make two phone
calls. The first call will activate Ringer and cause it to wait for a second
call between 30 seconds and 2 minutes later. The second phone call can be
made in that time per and will terminate Ringer. GT powercomm will then
execute a script to enter host mode. Any subsequent phone calls will be
answered by GT Host. After getting the data from the communcations program,
one needs to cause the computer to reboot to execute this autoexec.bat again
and allow the phone to be used for both voice and data. GT does this when
a user hangs up while in dos shell.
Copyright 1987, Vernon Huang and Robert Roberds. This program is hereby
released into the Public Domain. By using this program you agree to release
the authors from any liability of damages resulting from its use.
Turbo Pascal source code for this program is available for $5.00 from the
address below, I can also be reached on Compuserve [74017,2023].
Suggestions and feedback welcome.
Vernon Huang
1010 25th St.,NW #304
Washington, DC 20037
(Valid until 5/90)