Date: Sun, 26 Mar 2000 21:18:46 +0200 From: Kurt@pinboard.com To: freebsd-net@FreeBSD.ORG Cc: intmktg@cam.org Subject: Re: dumb terminal on db9 serial port Message-ID: <20000326211845.A29173@pinboard.com> In-Reply-To: <38DD50E4.DD1298C8@cam.org>; from intmktg@CAM.ORG on Sat, Mar 25, 2000 at 06:51:01PM -0500 References: <38DD50E4.DD1298C8@cam.org>
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On Sat, Mar 25, 2000 at 06:51:01PM -0500, Claude Tardif wrote: > > 4. wired my own null-modem cable (double-checked using a multi-meter), > taken from: > http://www.linux.org/help/ldp/howto/Text-Terminal-HOWTO-11.html#ss11.2 > > PC DB9 Terminal DB25 > RxD Receive Data 2 <-- 2 TxD Transmit Data > TxD Transmit Data 3 --> 3 RxD Receive Data > SG Signal Ground 5 --- 7 SG Signal Ground > CTS Clear To Send 8 <--20 DTR Data Terminal Ready > RTS Request To Send 7 --> 6 DSR Data Set Ready Shouldn't a null modem cable be: DB9 - DB25 3 - 3 2 - 2 7 - 5 8 - 4 5 - 7 1/6 - 20 4 - 8/6 Then of course, it also matters whether your terminal is wired as DTE or DCE. A minimum DB9-DB25 null modem cable, used to connect DTE-DTE should be: DB9 - DB25 3 - 3 2 - 2 5 - 7 And for a minimum DB9-DB25 straight cable, used for DTE-DCE connections it should look like: DB9 - DB25 2 - 3 3 - 2 5 - 7 Kurt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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