egray@fthood.UUCP (06/05/90)
I've found a modem that my two Telebit T2500s can't talk to! I've got a remote system with an el-cheepo-Hayes clone... a Avatex 2400 baud (V.22bis) that answers at 2400, and switches to 1200 on modem break. My Telebit T2500s are set up in the convential command mode and dial the number at 2400-E-1.... the phone rings, the modems sync, I get a carrier detect light, I get "CONNECT 2400", then I get crap. What appears on the screen is similar is some respect to what you get when you're connected at the wrong baud rate (characters typed echo back bursts of garbage). I've tried different combinations of parity, stop bits, guard tones, etc, but on no avail. No other (non-Telebit) modem has trouble talking to that Avatex, and I haven't found any other 2400 baud modem that the T2500s can't talk to. Any suggestions? Emmet P. Gray US Army, HQ III Corps & Fort Hood ...!uunet!uiucuxc!fthood!egray Attn: AFZF-DE-ENV fthood!egray@uxc.cso.uiuc.edu Directorate of Engineering & Housing Environmental Management Office Fort Hood, TX 76544-5057 EOF
egray@fthood.UUCP (06/06/90)
Reference my previous article on Telebit T2500 and Avatex modems not talking... I've found a solution I made a modest little change the gettydefs of the remote system (the one with the Avatex modem) to add HUPCL. After that change, the Telebit can now sync and talk to the Avatex if you give it a modem break. Oddly enough, no other modem requires a break to get 2400 baud, since the hunt sequence starts at 2400. The solution is even more strange than the problem! I can't see how the addition of HUPCL would make a difference, but what the heck... Emmet P. Gray US Army, HQ III Corps & Fort Hood ...!uunet!uiucuxc!fthood!egray Attn: AFZF-DE-ENV fthood!egray@uxc.cso.uiuc.edu Directorate of Engineering & Housing Environmental Management Office Fort Hood, TX 76544-5057