Article View: comp.sys.hp.hpux
Article #9Re: Help: Using a modem w/ HPUX
From: Peter Notess
Date: Tue, 12 Sep 1995 16:46
Date: Tue, 12 Sep 1995 16:46
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Lutz Vieweg (lkv@mania.robin.de) wrote: > Karen Stratton <stratton@btg.com> wrote: > >I have a HP 715 running 9.05 and a PPI PM228MT II V.34 modem. I am using a > >28800 modem. But when I download files, my transfer rate is between 5-175 > >bytes, yes I mean bytes, per second. > Try to tell the modem to ignore the RTS signal from the computer. > HP's and modern modems have different ideas of what RTS is going > to signal. I am getting high speed in both directions on my HP-UX workstation, and I do use RTS/CTS handshaking between the modem and my workstation. The key is setting up the device file on the workstation to use RTS/CTS flow control. The method of doing this is described in the Dependencies section of the termio(7) man page. There is one bit you can set to enable RTS/CTS by default, and some other bits you can set to control the 16550 UART FIFO trigger levels. For instance, you might want to have the minor number of the device file look like: 0x2040a9 for a dial-out device or 0x2040a8 for a dial-in device. I don't know if SAM lets you tweak all of those bits in the minor device number, but you can always use the mknod(1m) command to re-create the device file. Do an ls -l on the device file, and if the least significant hex digit of the minor number is not 8 or 9, this is probably your problem. -- Peter Notess Hewlett-Packard Company email: pcn@fc.hp.com Network and System Management Div. phone: (970) 229-3459 Fort Collins, CO
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Path: arc1-ca.pugleaf.net!fc.hp.com!pcn From: pcn@fc.hp.com (Peter Notess) Newsgroups: comp.sys.hp.hpux,comp.dcom.modems Subject: Re: Help: Using a modem w/ HPUX Followup-To: comp.sys.hp.hpux,comp.dcom.modems Date: 12 Sep 1995 16:46:48 GMT Organization: Hewlett-Packard Fort Collins Site Message-ID: <434dho$r8@tadpole.fc.hp.com> References: <42ib6u$k7a@allnews.infi.net> <42p087$hgq@mania.robin.de> NNTP-Posting-Host: pnotess.cnd.hp.com X-Newsreader: TIN [version 1.2 PL1.4]