Thanks for the link Darcy
Robert Lewko wrote: > > > On 11/22/06, *Robert Lewko* <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > The "not all" part is where some of these devices use the hardware > lines to handshake. CTS/RTS lines are used and have to be > supported for most devices. However, some devices use the DSR and > DTR lines to augment the basic handshaking. I think that it is > these lines that the USB cables don't support. > > You also have to have a correct cable, although most null modem > cables that you buy support 90% of the devices. I have come > across devices where I had to have a "breakout" box and make my > own cable. > > > Something I forgot to add was this URL to a site where the info on > serial cables is excellent: > > http://www.lammertbies.nl/comm/info/RS-232_null_modem.html > > > On 11/22/06, *Darcy Brodie* <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > Sorry - hit the wrong key > > I work in the security industry. Almost all of the electronic > security > (alarm systems, card access systems, closed circuit camera > systems, most > telephone systems for programing / backup / restore functions) > all > require a serial connection. We have tried the USB => Serial > adaptors, > and they will work for some of the security products, but not all. > > Darcy > > Darcy Brodie wrote: > > And I disagree with not making them. I know of a lot of > applications > > that still require serial connections > > > > Darcy > > > > > > Mitchell Brown wrote: > > > >> I'm pretty sure someone makes a PCMCIA card for this > purpose. Try > >> memxit.com <http://memxit.com> <http://memxit.com> > >> > >> I agree with the decision to no longer make them though - I > mean, who > >> uses them?! > >> > >> On 11/22/06, *Kin Wong* < [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> <mailto: [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>>> > >> wrote: > >> > >> As you know, new laptops are being made without serial > ports. Does > >> anyone know or has had success with serial ports cards > or usb serial > >> cables for laptops? > _______________________________________________ clug-talk mailing list [email protected] http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying
