jsm@phoenix.Princeton.EDU (John Scott McCauley Jr.) (01/06/89)
I am having problems with a Racal Vadic 2400 bps modem calling some non-Racal Vadic modems, e.g. a USR 2400 modem. Symtoms: A 'CONNECT 2400' message appears and then garbage. It looks like a baud-rate mis-match, but the Racal Vadic is able to call other 2400 bps modems, and the USR 2400 modem can answer ok from others. Can this be fixed with a rom change? If not, who is guilty of false advertising? Are there any 2400 baud modems that work with *all* modems? Thanks, Scott
READER-C@osu-20.ircc.ohio-state.edu (Charles Reader) (01/07/89)
I've had the same problem when I've tried using the US Robotics modem at MNP level 5. When I dropped it back to level 3, they were able to work OK. Any advice on how to make the modems work at level 5 would be appreciated.
patrick@chinet.chi.il.us (Patrick A. Townson) (01/07/89)
In article <5174@phoenix.Princeton.EDU> jsm@phoenix.Princeton.EDU (John Scott McCauley Jr.) writes: >I am having problems with a Racal Vadic 2400 bps modem calling some >non-Racal Vadic modems, e.g. a USR 2400 modem. > >Symtoms: > A 'CONNECT 2400' message appears and then garbage. > It looks like a baud-rate mis-match, but the Racal Vadic > is able to call other 2400 bps modems, and the USR 2400 > modem can answer ok from others. Is your trouble with *all* RV 2400's calling *all* USR 2400's, or just with one particular unit of each kind? I have a US Robotics Courier 2400 which gets along fine with everyone -- literally. I call a local BBS which uses RV modems. Do you think the individual RV or the individual USR (or both) might be slightly out of calibration, and where a small difference by either would not make any difference, the accumulated mis-calibration of both modems is sufficient to cause your problems. I've seen that happen a few times before. I ran a BBS once, long ago, using a Hayes 300 baud Smartmodem (remember those days?). I had many different callers to the BBS, but one fellow consistently reported he could never manage to log on; that I was always sending him garbage. His modem worked fine everywhere else he called, so therefore it had to be my modem out of whack, right? Trouble is, mine worked fine with everyone else except his. Probably everyone's modem is slightly out of calibration - not *quite* at the proper baud rate, but not noticable because everyone else is slightly off. Its just a suggestion you might consider. Try several USR's if possible to demonstrate to yourself it is not USR per se which is your problem. -- Patrick Townson patrick@chinet.chi.il.us / US Mail: 60690-1570 (personal zip code) FIDO: 115/743 / AT&T Mail: 529-6378 (!ptownson) / MCI Mail: 222-4956