sl@van-bc.UUCP (Stuart Lynne) (04/10/90)
In article <6023@accuvax.nwu.edu> mtndew!friedl@uunet.uu.net (Steve Friedl) writes: >> I assume fax machines use some sort of error-correction, so anything >> but truly horrid phone lines shouldn't affect it. >No, not at all. Note here that "fax" means Group III, which is all I >have substantial experience with. >Group III fax has neither error correction nor flow control, so phone >lines do definitely make a difference. The data pattern is modified Yes and no ... Yes: most (if not almost all) Group III machines do not have error correction. No: CCITT Group III specifications (as of 1988) do allow for an ECM mode between two consenting machines. Stuart.Lynne@wimsey.bc.ca ubc-cs!van-bc!sl 604-937-7532 (voice) 604-939-4768 (fax)