-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Christopher Intemann wrote: > Hi, > thanks for the hint, however, I'm in fact a bit more confused now:-) > Couldn't I use such a thing: > http://cgi.ebay.de/SERIAL-RS232-DB9-9-PIN-FEMALE-TO-RJ45-FEMALE-ADAPTOR_W0QQitemZ390041017767QQcmdZViewItemQQptZUK_Computing_Networking_SM?hash=item390041017767&_trksid=p3286.m63.l1177 > > In addition, I would then only need a RJ45 serial cable. Or an ordinary > telephone cable with 4 wires, right?
In case you're curious, a telco guy would often call such a cable "quad", it usually had pair colors red/green and yellow/black, with yellow/black being used for receive, versus red/green for send, black and green were the tip conductors, red/yellow were the ring conductors. This wasn't really specified as far as I know, it was just common convention. RJ45 is far from being the only Registered Jack that could terminate a quad circuit (using 4 out or 8 total conductors. There was even a way to wire the ordinarily 2 wire RJ11, called RJ14, so that 4 out of the 6 conductors were used (center 2 for circuit 1, outer 2 for circuit 2). RJ45 is a pretty popular way to refer to that 8 place connector, though. All of these things are regularly violated, so you just have to take your chances. > Thanks, > Chris > > > On Tue, Apr 28, 2009 at 3:42 AM, Jussi Peltola <pe...@pelzi.net> wrote: > >> Many (probably 50%) of RJ11 4-wire telephone cables were crimped wrong >> by the factory and are in fact roll over cables (RJ11 fits in RJ45, >> but you need 4 wires, 2 won't work). >> >> Saved me some from hair loss one sunday far away from everything. >> >> -- >> Jussi Peltola Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkn3WnoACgkQz62J6PPcoOlNawCgi4y+IdnJe45RJFfvDSOnvEtr XgUAn2QjgQbVtS/MyrLXy0MgY1mSGuvH =ugmu -----END PGP SIGNATURE-----
