markh@squirrel.LABS.TEK.COM (Mark Henderson) (08/29/90)
I'm trying to get a bunch of UDS V.3225 modems hooked up to a VAX 11/780 running 4.3BSD. It seems like the Vax doesn't support RTS/CTS flow control. Since I want the serial port speed fixed at 19200 (users dial in with modems ranging from 1200 bps V.22 to V.32), decent flow control is essential. XON/XOFF is, of course, less than ideal for binary file transfers, people who use programmes who (at least by default) need to send ^S and ^Q (gnu emacs, but then they can rebind their keys). I know that there are protocols for binary file transfers which avoid sending ^S and ^Q (I've heard that zmodem can quote these characters, also kermit appears to work, but some of our applications have built in protocols which we can't alter). Anyway, what I need to know is there any way I can get RTS/CTS flow control to work on between the V.3225's and the VAX? Any help would be greatly appreciated. Mark Henderson Computer Research Laboratory Tektronix, Inc. -- Mark Henderson, Tektronix, Inc., MS 50-662, P.O. Box 500, Beaverton, OR 97077 Telephone: +1 503 627 6280 FAX: +1 503 627 5502 TELEX: 6503784996MCI UW INTERNET: markh@crl.labs.tek.com ATTmail: !mchenderson MCI MAIL: 378-4996 X.400: ADMD=MCI/C=US/Surname=Henderson/Given_Name=Mark/DDA ID=3784996