From owner-freebsd-questions Fri Sep 29 2:13:23 2000 Delivered-To: freebsd-questions@freebsd.org Received: from pericles.IPAustralia.gov.au (pericles.IPAustralia.gov.au [202.14.186.30]) by hub.freebsd.org (Postfix) with ESMTP id 6F2D337B424 for ; Fri, 29 Sep 2000 02:12:58 -0700 (PDT) Received: (from smap@localhost) by pericles.IPAustralia.gov.au (8.9.3/8.9.3) id UAA02536 for ; Fri, 29 Sep 2000 20:12:51 +1100 (EST) (envelope-from anwsmh@IPAustralia.Gov.AU) Received: from wf-151.aipo.gov.au(192.168.1.151) by pericles.IPAustralia.gov.au via smap (V2.0) id xma002532; Fri, 29 Sep 00 20:12:41 +1100 Received: from localhost (anwsmh@localhost) by stan (8.9.3/8.9.3) with ESMTP id UAA00466 for ; Fri, 29 Sep 2000 20:12:44 +1100 (EST) (envelope-from anwsmh@IPAustralia.Gov.AU) X-Authentication-Warning: stan: anwsmh owned process doing -bs Date: Fri, 29 Sep 2000 20:12:43 +1100 (EST) From: Stanley Hopcroft X-Sender: anwsmh@stan To: Questions@FreeBSD.oRG Subject: Hardware flow control. Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Dear Ladies and Gentlemen, Man (4) termios states The CCTS_OFLOW (CRTSCTS) flag is currently unused. Is this likely to change in the near future ? I am using SMSLink (http://www.styx.demon.co.uk/smslink/) and libmodem-1.5 to send critical service notifications from Netsaint (http://www.netsaint.org) to an SMS modem (a Wavecom WM02). This works Ok but there is message loss if the message rate exceeeds 12/minute (my testing, not the rate of critical notifications). If libmodem uses hardware flow control (rather than XON/XOFF) the message loss is worse. I suppose that the real culprit is the application since 9600 bits per second is much faster than 12 * 160 * 8/60 bits in a 160 byte SMS message /second. Would anyone care to comment on hardware flow control ? Thank you, Yours sincerely. S Hopcroft Network Specialist IP Australia +61 2 6283 3189 +61 2 6281 1353 FAX To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message