Subj : XModem, OSI To : Bo Simonsen From : Andy Ball Date : Fri Oct 29 2004 09:05 am Hello Bo, BS> I've not clue about the age, but something tells me > Xmodem is older.. XModem was apparently developed in 1977 (I thought it was from the late 1970s, but I had to look up the actual year ;-) OSI was apparently developed during the 1980s, although it was probably influenced by an earlier 4-layer model from the U.S. Department of Defense. - Andy Ball * SLMR 2.1a * --- BBBS/NT v4.01 Flag-5 # Origin: FamilyNet Sponsored by http://www.christian-wellness.net (8:8/2) * Origin: BBS Networks @ www.bbsnets.com 808-839-6036 (1:10/345) .