Rephrasing Analog Modem Question

------------Original Message(s): Date: Tue, 2 Aug 2005 20:57:16 +0200 From: Jochen Kunz <jkunz at unixag-kl.fh-kl.de> Subject: Re: Rephrasing Analog Modem Question On Tue, 2 Aug 2005 10:34:17 -0500 "Pete Bartusek" <pbmain at wideopenwest.com> wrote: Get a terminal server with "reverse telnet" capability that rises DTR on the serial port if someone telnets to the corresponding TCP port. [1] Get modems with "dial on DTR" function and connect them to the serial ports of the terminal server. E.g. my old US Robotics Courier can do this. Get an old analog PBX. Connect your BBS system and the modems hanging Programm terminal server and modems, setup PBX. Done. If someone opens a telnet session to a port of the terminal server the modem "dial out" is triggered by the DTR signal. The modem dials the number stored in its NVRAM. The PBX connects the modem to a line of your BBS system. The BBS systems gets an incomming call... CONNECT! :-) [1] My terminal server does this. I use the DTR signals to control solid state relais. That way I can remote power cycle the machine thats console is connected to the corresponding serial port. ------------------Reply: Re [1]: What a neat idea! Back in the days when I was actually using my Cromemco systems, I did the same thing in order to work on several Cromemcos (and a PC controlling & monitoring the heating system) in the basement from the PC on my desk upstairs; however, I used the remote PC to turn power to the Cromemcos on and off (and I used _REAL_ relays :), never thought of using DTR. Mind you, I also used remote reset quite often; thoughtful of Cromemco to provide a phone jack on the back panel for that purpose. But wouldn't DTR get dropped when you select another system and shut down the previous one, or do you only have one running at a time? BTW, Howard Harte apparently has a Cromemco System1 set up to be powered up and accessed via the Internet, but I've never gotten his to come up; has anybody here ever tried it and succeeded? mike