On Sun, Apr 23, 2006 at 06:15:40PM -0300, Fernando Augusto Bender wrote: > On Sun, 2006-04-23 at 16:47 +0100, Doofus wrote: > > Fernando Augusto Bender wrote: > > > > >Well, formerly straight cables were used to connect DTE to DCE. > > > > > >DCE-DCE or DTE-DTE shall be connected cross-over. > > > > > >DCE - data communication devices, like switch, modems, routers. > > >DTE - data terminal devices: hosts. > > > > > > > I suspect they were discussing CAT-5 ethernet cabling Fernando, not RS232. > > > > > > why do you say that, because of the DCE, DTE noums? They apply to any > cabling. It's something universal.
DTE means Data Terminal Equipment. DCE means Data Communicatins Equipmend. In the old days data terminals (like teletypes) coonected to communications networks (like telephone systems or telegraph services or the like. The terminology is still valid when devices connect to specific communications services, especially when the protocols or wiring is asymmetric. It's not restricted to RS232. I know that when I was working on X.26 protocols, the terminology was used between computers and the network switches they connected to. I wish I wish that they would make all the connectors and protocols symmetric so we could just plug anything into anything without the hassle of determining which was DTE or DCE. Technically feasible. But telecom systems like to maintain a technological distinction between themselves and their customers. As if the hardware cares who is the user and who is not. -- hendrik -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
