Aucbvax.6647 fa.info-terms utzoo!decvax!ucbvax!info-terms Thu Apr 8 20:56:42 1982 VADIC 3400 series modem >From RAM@MIT-MC Thu Apr 8 20:54:32 1982 Is it any surprise that 3400 series modems seem to be speed transparent UP TO 1200 baud. More precisely, when I establish connection to my unix at 1200 baud, then tell terminal and unix that we are now 300 baud, everything goes at 300 baud. I had fond hopes that some of the attendant noise on phoneline would have its severity reduced by lowering speed. But this alas, seemed not to happen: subjectively, the garbaging on the screen seems about the same percentage, but when I shortly thereafter connect at 300 baud on a Bell 103 acoustic coupler, I have less problem. Is the VADIC signalling scheme inherently more noise susceptible independent of speed? (By the way, I switch in the noise supression equalization as per VADIC documentation, and result is same). Modem at far end is VADIC triple, if that matters. --bob morris ----------------------------------------------------------------- gopher://quux.org/ conversion by John Goerzen of http://communication.ucsd.edu/A-News/ This Usenet Oldnews Archive article may be copied and distributed freely, provided: 1. There is no money collected for the text(s) of the articles. 2. The following notice remains appended to each copy: The Usenet Oldnews Archive: Compilation Copyright (C) 1981, 1996 Bruce Jones, Henry Spencer, David Wiseman.